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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span> <span class='hs-layout'>(</span>
<a name="line-3"></a> <span class='hs-comment'>-- * Parser builders</span>
<a name="line-4"></a> <span class='hs-comment'>--</span>
<a name="line-5"></a> <span class='hs-comment'>-- | This module contains utility functions and combinators to create parsers</span>
<a name="line-6"></a> <span class='hs-comment'>-- for individual options.</span>
<a name="line-7"></a> <span class='hs-comment'>--</span>
<a name="line-8"></a> <span class='hs-comment'>-- Each parser builder takes an option modifier. A modifier can be created by</span>
<a name="line-9"></a> <span class='hs-comment'>-- composing the basic modifiers provided by this module using the 'Monoid'</span>
<a name="line-10"></a> <span class='hs-comment'>-- operations 'mempty' and 'mappend', or their aliases 'idm' and '<>'.</span>
<a name="line-11"></a> <span class='hs-comment'>--</span>
<a name="line-12"></a> <span class='hs-comment'>-- For example:</span>
<a name="line-13"></a> <span class='hs-comment'>--</span>
<a name="line-14"></a> <span class='hs-comment'>-- > out = strOption</span>
<a name="line-15"></a> <span class='hs-comment'>-- > ( long "output"</span>
<a name="line-16"></a> <span class='hs-comment'>-- > <> short 'o'</span>
<a name="line-17"></a> <span class='hs-comment'>-- > <> metavar "FILENAME" )</span>
<a name="line-18"></a> <span class='hs-comment'>--</span>
<a name="line-19"></a> <span class='hs-comment'>-- creates a parser for an option called \"output\".</span>
<a name="line-20"></a> <span class='hs-varid'>subparser</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>strArgument</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>argument</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>flag</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>flag'</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>switch</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-varid'>abortOption</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-varid'>infoOption</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>strOption</span><span class='hs-layout'>,</span>
<a name="line-29"></a> <span class='hs-varid'>option</span><span class='hs-layout'>,</span>
<a name="line-30"></a> <span class='hs-varid'>nullOption</span><span class='hs-layout'>,</span>
<a name="line-31"></a>
<a name="line-32"></a> <span class='hs-comment'>-- * Modifiers</span>
<a name="line-33"></a> <span class='hs-varid'>short</span><span class='hs-layout'>,</span>
<a name="line-34"></a> <span class='hs-varid'>long</span><span class='hs-layout'>,</span>
<a name="line-35"></a> <span class='hs-varid'>help</span><span class='hs-layout'>,</span>
<a name="line-36"></a> <span class='hs-varid'>helpDoc</span><span class='hs-layout'>,</span>
<a name="line-37"></a> <span class='hs-varid'>value</span><span class='hs-layout'>,</span>
<a name="line-38"></a> <span class='hs-varid'>showDefaultWith</span><span class='hs-layout'>,</span>
<a name="line-39"></a> <span class='hs-varid'>showDefault</span><span class='hs-layout'>,</span>
<a name="line-40"></a> <span class='hs-varid'>metavar</span><span class='hs-layout'>,</span>
<a name="line-41"></a> <span class='hs-varid'>eitherReader</span><span class='hs-layout'>,</span>
<a name="line-42"></a> <span class='hs-varid'>noArgError</span><span class='hs-layout'>,</span>
<a name="line-43"></a> <span class='hs-conid'>ParseError</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-44"></a> <span class='hs-varid'>hidden</span><span class='hs-layout'>,</span>
<a name="line-45"></a> <span class='hs-varid'>internal</span><span class='hs-layout'>,</span>
<a name="line-46"></a> <span class='hs-varid'>command</span><span class='hs-layout'>,</span>
<a name="line-47"></a> <span class='hs-varid'>completeWith</span><span class='hs-layout'>,</span>
<a name="line-48"></a> <span class='hs-varid'>action</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-varid'>completer</span><span class='hs-layout'>,</span>
<a name="line-50"></a> <span class='hs-varid'>idm</span><span class='hs-layout'>,</span>
<a name="line-51"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ > 702</span>
<a name="line-52"></a> <span class='hs-layout'>(</span><span class='hs-varop'><></span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-53"></a><span class='hs-cpp'>#endif</span>
<a name="line-54"></a> <span class='hs-varid'>mappend</span><span class='hs-layout'>,</span>
<a name="line-55"></a>
<a name="line-56"></a> <span class='hs-comment'>-- * Readers</span>
<a name="line-57"></a> <span class='hs-comment'>--</span>
<a name="line-58"></a> <span class='hs-comment'>-- | A collection of basic 'Option' readers.</span>
<a name="line-59"></a> <span class='hs-varid'>auto</span><span class='hs-layout'>,</span>
<a name="line-60"></a> <span class='hs-varid'>str</span><span class='hs-layout'>,</span>
<a name="line-61"></a> <span class='hs-varid'>disabled</span><span class='hs-layout'>,</span>
<a name="line-62"></a> <span class='hs-varid'>readerAbort</span><span class='hs-layout'>,</span>
<a name="line-63"></a> <span class='hs-varid'>readerError</span><span class='hs-layout'>,</span>
<a name="line-64"></a>
<a name="line-65"></a> <span class='hs-comment'>-- * Builder for 'ParserInfo'</span>
<a name="line-66"></a> <span class='hs-conid'>InfoMod</span><span class='hs-layout'>,</span>
<a name="line-67"></a> <span class='hs-varid'>fullDesc</span><span class='hs-layout'>,</span>
<a name="line-68"></a> <span class='hs-varid'>briefDesc</span><span class='hs-layout'>,</span>
<a name="line-69"></a> <span class='hs-varid'>header</span><span class='hs-layout'>,</span>
<a name="line-70"></a> <span class='hs-varid'>headerDoc</span><span class='hs-layout'>,</span>
<a name="line-71"></a> <span class='hs-varid'>footer</span><span class='hs-layout'>,</span>
<a name="line-72"></a> <span class='hs-varid'>footerDoc</span><span class='hs-layout'>,</span>
<a name="line-73"></a> <span class='hs-varid'>progDesc</span><span class='hs-layout'>,</span>
<a name="line-74"></a> <span class='hs-varid'>progDescDoc</span><span class='hs-layout'>,</span>
<a name="line-75"></a> <span class='hs-varid'>failureCode</span><span class='hs-layout'>,</span>
<a name="line-76"></a> <span class='hs-varid'>noIntersperse</span><span class='hs-layout'>,</span>
<a name="line-77"></a> <span class='hs-varid'>info</span><span class='hs-layout'>,</span>
<a name="line-78"></a>
<a name="line-79"></a> <span class='hs-comment'>-- * Builder for 'ParserPrefs'</span>
<a name="line-80"></a> <span class='hs-conid'>PrefsMod</span><span class='hs-layout'>,</span>
<a name="line-81"></a> <span class='hs-varid'>multiSuffix</span><span class='hs-layout'>,</span>
<a name="line-82"></a> <span class='hs-varid'>disambiguate</span><span class='hs-layout'>,</span>
<a name="line-83"></a> <span class='hs-varid'>showHelpOnError</span><span class='hs-layout'>,</span>
<a name="line-84"></a> <span class='hs-varid'>noBacktrack</span><span class='hs-layout'>,</span>
<a name="line-85"></a> <span class='hs-varid'>columns</span><span class='hs-layout'>,</span>
<a name="line-86"></a> <span class='hs-varid'>prefs</span><span class='hs-layout'>,</span>
<a name="line-87"></a> <span class='hs-varid'>defaultPrefs</span><span class='hs-layout'>,</span>
<a name="line-88"></a>
<a name="line-89"></a> <span class='hs-comment'>-- * Types</span>
<a name="line-90"></a> <span class='hs-conid'>Mod</span><span class='hs-layout'>,</span>
<a name="line-91"></a> <span class='hs-conid'>ReadM</span><span class='hs-layout'>,</span>
<a name="line-92"></a> <span class='hs-conid'>OptionFields</span><span class='hs-layout'>,</span>
<a name="line-93"></a> <span class='hs-conid'>FlagFields</span><span class='hs-layout'>,</span>
<a name="line-94"></a> <span class='hs-conid'>ArgumentFields</span><span class='hs-layout'>,</span>
<a name="line-95"></a> <span class='hs-conid'>CommandFields</span>
<a name="line-96"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-97"></a>
<a name="line-98"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span> <span class='hs-layout'>(</span><span class='hs-varid'>pure</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><|></span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-99"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-conid'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-100"></a><span class='hs-cpp'>#if __GLASGOW_HASKELL__ > 702</span>
<a name="line-101"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'><></span><span class='hs-layout'>)</span>
<a name="line-102"></a><span class='hs-cpp'>#endif</span>
<a name="line-103"></a> <span class='hs-layout'>)</span>
<a name="line-104"></a>
<a name="line-105"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span><span class='hs-varop'>.</span><span class='hs-conid'>Completer</span>
<a name="line-106"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Builder</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-107"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Common</span>
<a name="line-108"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-109"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Help</span><span class='hs-varop'>.</span><span class='hs-conid'>Pretty</span>
<a name="line-110"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Options</span><span class='hs-varop'>.</span><span class='hs-conid'>Applicative</span><span class='hs-varop'>.</span><span class='hs-conid'>Help</span><span class='hs-varop'>.</span><span class='hs-conid'>Chunk</span>
<a name="line-111"></a>
<a name="line-112"></a><span class='hs-comment'>-- readers --</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="auto"></a><span class='hs-comment'>-- | 'Option' reader based on the 'Read' type class.</span>
<a name="line-115"></a><span class='hs-definition'>auto</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Read</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>ReadM</span> <span class='hs-varid'>a</span>
<a name="line-116"></a><span class='hs-definition'>auto</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>eitherReader</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>arg</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>reads</span> <span class='hs-varid'>arg</span> <span class='hs-keyword'>of</span>
<a name="line-117"></a> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-layout'>,</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varid'>r</span>
<a name="line-118"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"cannot parse value `"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>arg</span> <span class='hs-varop'>++</span> <span class='hs-str'>"'"</span>
<a name="line-119"></a>
<a name="line-120"></a><a name="str"></a><span class='hs-comment'>-- | String 'Option' reader.</span>
<a name="line-121"></a><span class='hs-definition'>str</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ReadM</span> <span class='hs-conid'>String</span>
<a name="line-122"></a><span class='hs-definition'>str</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readerAsk</span>
<a name="line-123"></a>
<a name="line-124"></a><a name="disabled"></a><span class='hs-comment'>-- | Null 'Option' reader. All arguments will fail validation.</span>
<a name="line-125"></a><span class='hs-definition'>disabled</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ReadM</span> <span class='hs-varid'>a</span>
<a name="line-126"></a><span class='hs-definition'>disabled</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readerError</span> <span class='hs-str'>"disabled option"</span>
<a name="line-127"></a>
<a name="line-128"></a><span class='hs-comment'>-- modifiers --</span>
<a name="line-129"></a>
<a name="line-130"></a><a name="short"></a><span class='hs-comment'>-- | Specify a short name for an option.</span>
<a name="line-131"></a><span class='hs-definition'>short</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasName</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-132"></a><span class='hs-definition'>short</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fieldMod</span> <span class='hs-varop'>.</span> <span class='hs-varid'>name</span> <span class='hs-varop'>.</span> <span class='hs-conid'>OptShort</span>
<a name="line-133"></a>
<a name="line-134"></a><a name="long"></a><span class='hs-comment'>-- | Specify a long name for an option.</span>
<a name="line-135"></a><span class='hs-definition'>long</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasName</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-136"></a><span class='hs-definition'>long</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fieldMod</span> <span class='hs-varop'>.</span> <span class='hs-varid'>name</span> <span class='hs-varop'>.</span> <span class='hs-conid'>OptLong</span>
<a name="line-137"></a>
<a name="line-138"></a><a name="value"></a><span class='hs-comment'>-- | Specify a default value for an option.</span>
<a name="line-139"></a><span class='hs-comment'>--</span>
<a name="line-140"></a><span class='hs-comment'>-- /Note/: Because this modifier means the parser will never fail,</span>
<a name="line-141"></a><span class='hs-comment'>-- do not use it with combinators such as 'some' or 'many', as</span>
<a name="line-142"></a><span class='hs-comment'>-- these combinators continue until a failure occurs.</span>
<a name="line-143"></a><span class='hs-comment'>-- Careless use will thus result in a hang.</span>
<a name="line-144"></a><span class='hs-definition'>value</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasValue</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-145"></a><span class='hs-definition'>value</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>id</span> <span class='hs-layout'>(</span><span class='hs-conid'>DefaultProp</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>id</span>
<a name="line-146"></a>
<a name="line-147"></a><a name="showDefaultWith"></a><span class='hs-comment'>-- | Specify a function to show the default value for an option.</span>
<a name="line-148"></a><span class='hs-definition'>showDefaultWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-149"></a><span class='hs-definition'>showDefaultWith</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>id</span> <span class='hs-layout'>(</span><span class='hs-conid'>DefaultProp</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>id</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="showDefault"></a><span class='hs-comment'>-- | Show the default value for this option using its 'Show' instance.</span>
<a name="line-152"></a><span class='hs-definition'>showDefault</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-153"></a><span class='hs-definition'>showDefault</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showDefaultWith</span> <span class='hs-varid'>show</span>
<a name="line-154"></a>
<a name="line-155"></a><a name="help"></a><span class='hs-comment'>-- | Specify the help text for an option.</span>
<a name="line-156"></a><span class='hs-definition'>help</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-157"></a><span class='hs-definition'>help</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>optionMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>propHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>paragraph</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-158"></a>
<a name="line-159"></a><a name="helpDoc"></a><span class='hs-comment'>-- | Specify the help text for an option as a 'Text.PrettyPrint.ANSI.Leijen.Doc'</span>
<a name="line-160"></a><span class='hs-comment'>-- value.</span>
<a name="line-161"></a><span class='hs-definition'>helpDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-162"></a><span class='hs-definition'>helpDoc</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>optionMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>propHelp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Chunk</span> <span class='hs-varid'>doc</span> <span class='hs-layout'>}</span>
<a name="line-163"></a>
<a name="line-164"></a><a name="eitherReader"></a><span class='hs-comment'>-- | Convert a function in the 'Either' monad to a reader.</span>
<a name="line-165"></a><span class='hs-definition'>eitherReader</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ReadM</span> <span class='hs-varid'>a</span>
<a name="line-166"></a><span class='hs-definition'>eitherReader</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readerAsk</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>either</span> <span class='hs-varid'>readerError</span> <span class='hs-varid'>return</span> <span class='hs-varop'>.</span> <span class='hs-varid'>f</span>
<a name="line-167"></a>
<a name="line-168"></a><a name="noArgError"></a><span class='hs-comment'>-- | Specify the error to display when no argument is provided to this option.</span>
<a name="line-169"></a><span class='hs-definition'>noArgError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseError</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>OptionFields</span> <span class='hs-varid'>a</span>
<a name="line-170"></a><span class='hs-definition'>noArgError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fieldMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>optNoArgError</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>e</span> <span class='hs-layout'>}</span>
<a name="line-171"></a>
<a name="line-172"></a><a name="metavar"></a><span class='hs-comment'>-- | Specify a metavariable for the argument.</span>
<a name="line-173"></a><span class='hs-comment'>--</span>
<a name="line-174"></a><span class='hs-comment'>-- Metavariables have no effect on the actual parser, and only serve to specify</span>
<a name="line-175"></a><span class='hs-comment'>-- the symbolic name for an argument to be displayed in the help text.</span>
<a name="line-176"></a><span class='hs-definition'>metavar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasMetavar</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-177"></a><span class='hs-definition'>metavar</span> <span class='hs-varid'>var</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>optionMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>propMetaVar</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>var</span> <span class='hs-layout'>}</span>
<a name="line-178"></a>
<a name="line-179"></a><a name="hidden"></a><span class='hs-comment'>-- | Hide this option from the brief description.</span>
<a name="line-180"></a><span class='hs-definition'>hidden</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-181"></a><span class='hs-definition'>hidden</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>optionMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span>
<a name="line-182"></a> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>propVisibility</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>min</span> <span class='hs-conid'>Hidden</span> <span class='hs-layout'>(</span><span class='hs-varid'>propVisibility</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-183"></a>
<a name="line-184"></a><a name="command"></a><span class='hs-comment'>-- | Add a command to a subparser option.</span>
<a name="line-185"></a><span class='hs-definition'>command</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserInfo</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>CommandFields</span> <span class='hs-varid'>a</span>
<a name="line-186"></a><span class='hs-definition'>command</span> <span class='hs-varid'>cmd</span> <span class='hs-varid'>pinfo</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fieldMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span>
<a name="line-187"></a> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>cmdCommands</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>cmd</span><span class='hs-layout'>,</span> <span class='hs-varid'>pinfo</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>cmdCommands</span> <span class='hs-varid'>p</span> <span class='hs-layout'>}</span>
<a name="line-188"></a>
<a name="line-189"></a><a name="completeWith"></a><span class='hs-comment'>-- | Add a list of possible completion values.</span>
<a name="line-190"></a><span class='hs-definition'>completeWith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasCompleter</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-191"></a><span class='hs-definition'>completeWith</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>completer</span> <span class='hs-layout'>(</span><span class='hs-varid'>listCompleter</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span>
<a name="line-192"></a>
<a name="line-193"></a><a name="action"></a><span class='hs-comment'>-- | Add a bash completion action. Common actions include @file@ and</span>
<a name="line-194"></a><span class='hs-comment'>-- @directory@. See</span>
<a name="line-195"></a><span class='hs-comment'>-- <<a href="http://www.gnu.org/software/bash/manual/html_node/Programmable-Completion-Builtins.html#Programmable-Completion-Builtins">http://www.gnu.org/software/bash/manual/html_node/Programmable-Completion-Builtins.html#Programmable-Completion-Builtins</a>></span>
<a name="line-196"></a><span class='hs-comment'>-- for a complete list.</span>
<a name="line-197"></a><span class='hs-definition'>action</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasCompleter</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-198"></a><span class='hs-definition'>action</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>completer</span> <span class='hs-layout'>(</span><span class='hs-varid'>bashCompleter</span> <span class='hs-varid'>act</span><span class='hs-layout'>)</span>
<a name="line-199"></a>
<a name="line-200"></a><a name="completer"></a><span class='hs-comment'>-- | Add a completer to an argument.</span>
<a name="line-201"></a><span class='hs-comment'>--</span>
<a name="line-202"></a><span class='hs-comment'>-- A completer is a function String -> IO String which, given a partial</span>
<a name="line-203"></a><span class='hs-comment'>-- argument, returns all possible completions for that argument.</span>
<a name="line-204"></a><span class='hs-definition'>completer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HasCompleter</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Completer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>a</span>
<a name="line-205"></a><span class='hs-definition'>completer</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fieldMod</span> <span class='hs-varop'>$</span> <span class='hs-varid'>modCompleter</span> <span class='hs-layout'>(</span><span class='hs-varop'>`mappend`</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-206"></a>
<a name="line-207"></a><span class='hs-comment'>-- parsers --</span>
<a name="line-208"></a>
<a name="line-209"></a><a name="subparser"></a><span class='hs-comment'>-- | Builder for a command parser. The 'command' modifier can be used to</span>
<a name="line-210"></a><span class='hs-comment'>-- specify individual commands.</span>
<a name="line-211"></a><span class='hs-definition'>subparser</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>CommandFields</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-212"></a><span class='hs-definition'>subparser</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkParser</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span> <span class='hs-varid'>rdr</span>
<a name="line-213"></a> <span class='hs-keyword'>where</span>
<a name="line-214"></a> <span class='hs-conid'>Mod</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>metavar</span> <span class='hs-str'>"COMMAND"</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>m</span>
<a name="line-215"></a> <span class='hs-varid'>rdr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>uncurry</span> <span class='hs-conid'>CmdReader</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkCommand</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span>
<a name="line-216"></a>
<a name="line-217"></a><a name="argument"></a><span class='hs-comment'>-- | Builder for an argument parser.</span>
<a name="line-218"></a><span class='hs-definition'>argument</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ReadM</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>ArgumentFields</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-219"></a><span class='hs-definition'>argument</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkParser</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span> <span class='hs-layout'>(</span><span class='hs-conid'>ArgReader</span> <span class='hs-varid'>rdr</span><span class='hs-layout'>)</span>
<a name="line-220"></a> <span class='hs-keyword'>where</span>
<a name="line-221"></a> <span class='hs-conid'>ArgumentFields</span> <span class='hs-varid'>compl</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>ArgumentFields</span> <span class='hs-varid'>mempty</span><span class='hs-layout'>)</span>
<a name="line-222"></a> <span class='hs-varid'>rdr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CReader</span> <span class='hs-varid'>compl</span> <span class='hs-varid'>p</span>
<a name="line-223"></a>
<a name="line-224"></a><a name="strArgument"></a><span class='hs-comment'>-- | Builder for a 'String' argument.</span>
<a name="line-225"></a><span class='hs-definition'>strArgument</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>ArgumentFields</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-226"></a><span class='hs-definition'>strArgument</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>argument</span> <span class='hs-varid'>str</span>
<a name="line-227"></a>
<a name="line-228"></a><a name="flag"></a><span class='hs-comment'>-- | Builder for a flag parser.</span>
<a name="line-229"></a><span class='hs-comment'>--</span>
<a name="line-230"></a><span class='hs-comment'>-- A flag that switches from a \"default value\" to an \"active value\" when</span>
<a name="line-231"></a><span class='hs-comment'>-- encountered. For a simple boolean value, use `switch` instead.</span>
<a name="line-232"></a><span class='hs-definition'>flag</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ default value</span>
<a name="line-233"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ active value</span>
<a name="line-234"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>FlagFields</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ option modifier</span>
<a name="line-235"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-236"></a><span class='hs-definition'>flag</span> <span class='hs-varid'>defv</span> <span class='hs-varid'>actv</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flag'</span> <span class='hs-varid'>actv</span> <span class='hs-varid'>m</span> <span class='hs-varop'><|></span> <span class='hs-varid'>pure</span> <span class='hs-varid'>defv</span>
<a name="line-237"></a>
<a name="line-238"></a><a name="flag'"></a><span class='hs-comment'>-- | Builder for a flag parser without a default value.</span>
<a name="line-239"></a><span class='hs-comment'>--</span>
<a name="line-240"></a><span class='hs-comment'>-- Same as 'flag', but with no default value. In particular, this flag will</span>
<a name="line-241"></a><span class='hs-comment'>-- never parse successfully by itself.</span>
<a name="line-242"></a><span class='hs-comment'>--</span>
<a name="line-243"></a><span class='hs-comment'>-- It still makes sense to use it as part of a composite parser. For example</span>
<a name="line-244"></a><span class='hs-comment'>--</span>
<a name="line-245"></a><span class='hs-comment'>-- > length <$> many (flag' () (short 't'))</span>
<a name="line-246"></a><span class='hs-comment'>--</span>
<a name="line-247"></a><span class='hs-comment'>-- is a parser that counts the number of "-t" arguments on the command line.</span>
<a name="line-248"></a><span class='hs-definition'>flag'</span> <span class='hs-keyglyph'>::</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ active value</span>
<a name="line-249"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>FlagFields</span> <span class='hs-varid'>a</span> <span class='hs-comment'>-- ^ option modifier</span>
<a name="line-250"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-251"></a><span class='hs-definition'>flag'</span> <span class='hs-varid'>actv</span> <span class='hs-layout'>(</span><span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkParser</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span> <span class='hs-varid'>rdr</span>
<a name="line-252"></a> <span class='hs-keyword'>where</span>
<a name="line-253"></a> <span class='hs-varid'>rdr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>fields</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>FlagFields</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>actv</span><span class='hs-layout'>)</span>
<a name="line-254"></a> <span class='hs-keyword'>in</span> <span class='hs-conid'>FlagReader</span> <span class='hs-layout'>(</span><span class='hs-varid'>flagNames</span> <span class='hs-varid'>fields</span><span class='hs-layout'>)</span>
<a name="line-255"></a> <span class='hs-layout'>(</span><span class='hs-varid'>flagActive</span> <span class='hs-varid'>fields</span><span class='hs-layout'>)</span>
<a name="line-256"></a>
<a name="line-257"></a><a name="switch"></a><span class='hs-comment'>-- | Builder for a boolean flag.</span>
<a name="line-258"></a><span class='hs-comment'>--</span>
<a name="line-259"></a><span class='hs-comment'>-- > switch = flag False True</span>
<a name="line-260"></a><span class='hs-definition'>switch</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>FlagFields</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>Bool</span>
<a name="line-261"></a><span class='hs-definition'>switch</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flag</span> <span class='hs-conid'>False</span> <span class='hs-conid'>True</span>
<a name="line-262"></a>
<a name="line-263"></a><a name="abortOption"></a><span class='hs-comment'>-- | An option that always fails.</span>
<a name="line-264"></a><span class='hs-comment'>--</span>
<a name="line-265"></a><span class='hs-comment'>-- When this option is encountered, the option parser immediately aborts with</span>
<a name="line-266"></a><span class='hs-comment'>-- the given parse error. If you simply want to output a message, use</span>
<a name="line-267"></a><span class='hs-comment'>-- 'infoOption' instead.</span>
<a name="line-268"></a><span class='hs-definition'>abortOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseError</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>OptionFields</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-269"></a><span class='hs-definition'>abortOption</span> <span class='hs-varid'>err</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>option</span> <span class='hs-layout'>(</span><span class='hs-varid'>readerAbort</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>`mappend`</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mconcat</span>
<a name="line-270"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>noArgError</span> <span class='hs-varid'>err</span>
<a name="line-271"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>value</span> <span class='hs-varid'>id</span>
<a name="line-272"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>metavar</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>]</span>
<a name="line-273"></a>
<a name="line-274"></a><a name="infoOption"></a><span class='hs-comment'>-- | An option that always fails and displays a message.</span>
<a name="line-275"></a><span class='hs-definition'>infoOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>OptionFields</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-276"></a><span class='hs-definition'>infoOption</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>abortOption</span> <span class='hs-varop'>.</span> <span class='hs-conid'>InfoMsg</span>
<a name="line-277"></a>
<a name="line-278"></a><a name="strOption"></a><span class='hs-comment'>-- | Builder for an option taking a 'String' argument.</span>
<a name="line-279"></a><span class='hs-definition'>strOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>OptionFields</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-conid'>String</span>
<a name="line-280"></a><span class='hs-definition'>strOption</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>option</span> <span class='hs-varid'>str</span>
<a name="line-281"></a>
<a name="line-282"></a><a name="nullOption"></a><span class='hs-comment'>-- | Same as 'option'.</span>
<a name="line-283"></a><span class='hs-comment'>{-# DEPRECATED nullOption "Use 'option' instead" #-}</span>
<a name="line-284"></a><span class='hs-definition'>nullOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ReadM</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>OptionFields</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-285"></a><span class='hs-definition'>nullOption</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>option</span>
<a name="line-286"></a>
<a name="line-287"></a><a name="option"></a><span class='hs-comment'>-- | Builder for an option using the given reader.</span>
<a name="line-288"></a><span class='hs-definition'>option</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ReadM</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Mod</span> <span class='hs-conid'>OptionFields</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span>
<a name="line-289"></a><span class='hs-definition'>option</span> <span class='hs-varid'>r</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mkParser</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span> <span class='hs-varid'>rdr</span>
<a name="line-290"></a> <span class='hs-keyword'>where</span>
<a name="line-291"></a> <span class='hs-conid'>Mod</span> <span class='hs-varid'>f</span> <span class='hs-varid'>d</span> <span class='hs-varid'>g</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>metavar</span> <span class='hs-str'>"ARG"</span> <span class='hs-varop'>`mappend`</span> <span class='hs-varid'>m</span>
<a name="line-292"></a> <span class='hs-varid'>fields</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-conid'>OptionFields</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>mempty</span> <span class='hs-layout'>(</span><span class='hs-conid'>ErrorMsg</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-293"></a> <span class='hs-varid'>crdr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CReader</span> <span class='hs-layout'>(</span><span class='hs-varid'>optCompleter</span> <span class='hs-varid'>fields</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span>
<a name="line-294"></a> <span class='hs-varid'>rdr</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>OptReader</span> <span class='hs-layout'>(</span><span class='hs-varid'>optNames</span> <span class='hs-varid'>fields</span><span class='hs-layout'>)</span> <span class='hs-varid'>crdr</span> <span class='hs-layout'>(</span><span class='hs-varid'>optNoArgError</span> <span class='hs-varid'>fields</span><span class='hs-layout'>)</span>
<a name="line-295"></a>
<a name="line-296"></a><a name="InfoMod"></a><span class='hs-comment'>-- | Modifier for 'ParserInfo'.</span>
<a name="line-297"></a><a name="InfoMod"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span>
<a name="line-298"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>applyInfoMod</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParserInfo</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserInfo</span> <span class='hs-varid'>a</span> <span class='hs-layout'>}</span>
<a name="line-299"></a>
<a name="line-300"></a><a name="instance%20Monoid%20(InfoMod%20a)"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monoid</span> <span class='hs-layout'>(</span><span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-301"></a> <span class='hs-varid'>mempty</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>id</span>
<a name="line-302"></a> <span class='hs-varid'>mappend</span> <span class='hs-varid'>m1</span> <span class='hs-varid'>m2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-varid'>applyInfoMod</span> <span class='hs-varid'>m2</span> <span class='hs-varop'>.</span> <span class='hs-varid'>applyInfoMod</span> <span class='hs-varid'>m1</span>
<a name="line-303"></a>
<a name="line-304"></a><a name="fullDesc"></a><span class='hs-comment'>-- | Show a full description in the help text of this parser.</span>
<a name="line-305"></a><span class='hs-definition'>fullDesc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-306"></a><span class='hs-definition'>fullDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoFullDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span> <span class='hs-layout'>}</span>
<a name="line-307"></a>
<a name="line-308"></a><a name="briefDesc"></a><span class='hs-comment'>-- | Only show a brief description in the help text of this parser.</span>
<a name="line-309"></a><span class='hs-definition'>briefDesc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-310"></a><span class='hs-definition'>briefDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoFullDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span> <span class='hs-layout'>}</span>
<a name="line-311"></a>
<a name="line-312"></a><a name="header"></a><span class='hs-comment'>-- | Specify a header for this parser.</span>
<a name="line-313"></a><span class='hs-definition'>header</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-314"></a><span class='hs-definition'>header</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoHeader</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>paragraph</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-315"></a>
<a name="line-316"></a><a name="headerDoc"></a><span class='hs-comment'>-- | Specify a header for this parser as a 'Text.PrettyPrint.ANSI.Leijen.Doc'</span>
<a name="line-317"></a><span class='hs-comment'>-- value.</span>
<a name="line-318"></a><span class='hs-definition'>headerDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-319"></a><span class='hs-definition'>headerDoc</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoHeader</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Chunk</span> <span class='hs-varid'>doc</span> <span class='hs-layout'>}</span>
<a name="line-320"></a>
<a name="line-321"></a><a name="footer"></a><span class='hs-comment'>-- | Specify a footer for this parser.</span>
<a name="line-322"></a><span class='hs-definition'>footer</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-323"></a><span class='hs-definition'>footer</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoFooter</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>paragraph</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-324"></a>
<a name="line-325"></a><a name="footerDoc"></a><span class='hs-comment'>-- | Specify a footer for this parser as a 'Text.PrettyPrint.ANSI.Leijen.Doc'</span>
<a name="line-326"></a><span class='hs-comment'>-- value.</span>
<a name="line-327"></a><span class='hs-definition'>footerDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-328"></a><span class='hs-definition'>footerDoc</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoFooter</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Chunk</span> <span class='hs-varid'>doc</span> <span class='hs-layout'>}</span>
<a name="line-329"></a>
<a name="line-330"></a><a name="progDesc"></a><span class='hs-comment'>-- | Specify a short program description.</span>
<a name="line-331"></a><span class='hs-definition'>progDesc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-332"></a><span class='hs-definition'>progDesc</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoProgDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>paragraph</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-333"></a>
<a name="line-334"></a><a name="progDescDoc"></a><span class='hs-comment'>-- | Specify a short program description as a 'Text.PrettyPrint.ANSI.Leijen.Doc'</span>
<a name="line-335"></a><span class='hs-comment'>-- value.</span>
<a name="line-336"></a><span class='hs-definition'>progDescDoc</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Doc</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-337"></a><span class='hs-definition'>progDescDoc</span> <span class='hs-varid'>doc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoProgDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Chunk</span> <span class='hs-varid'>doc</span> <span class='hs-layout'>}</span>
<a name="line-338"></a>
<a name="line-339"></a><a name="failureCode"></a><span class='hs-comment'>-- | Specify an exit code if a parse error occurs.</span>
<a name="line-340"></a><span class='hs-definition'>failureCode</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-341"></a><span class='hs-definition'>failureCode</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>i</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>i</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoFailureCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n</span> <span class='hs-layout'>}</span>
<a name="line-342"></a>
<a name="line-343"></a><a name="noIntersperse"></a><span class='hs-comment'>-- | Disable parsing of regular options after arguments</span>
<a name="line-344"></a><span class='hs-definition'>noIntersperse</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span>
<a name="line-345"></a><span class='hs-definition'>noIntersperse</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>InfoMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>infoIntersperse</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span> <span class='hs-layout'>}</span>
<a name="line-346"></a>
<a name="line-347"></a><a name="info"></a><span class='hs-comment'>-- | Create a 'ParserInfo' given a 'Parser' and a modifier.</span>
<a name="line-348"></a><span class='hs-definition'>info</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>InfoMod</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserInfo</span> <span class='hs-varid'>a</span>
<a name="line-349"></a><span class='hs-definition'>info</span> <span class='hs-varid'>parser</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>applyInfoMod</span> <span class='hs-varid'>m</span> <span class='hs-varid'>base</span>
<a name="line-350"></a> <span class='hs-keyword'>where</span>
<a name="line-351"></a> <span class='hs-varid'>base</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ParserInfo</span>
<a name="line-352"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>infoParser</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>parser</span>
<a name="line-353"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoFullDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-354"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoProgDesc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-355"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoHeader</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-356"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoFooter</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-357"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoFailureCode</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-358"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>infoIntersperse</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span> <span class='hs-layout'>}</span>
<a name="line-359"></a>
<a name="line-360"></a><a name="PrefsMod"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span>
<a name="line-361"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>applyPrefsMod</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParserPrefs</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserPrefs</span> <span class='hs-layout'>}</span>
<a name="line-362"></a>
<a name="line-363"></a><a name="instance%20Monoid%20PrefsMod"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Monoid</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-keyword'>where</span>
<a name="line-364"></a> <span class='hs-varid'>mempty</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varid'>id</span>
<a name="line-365"></a> <span class='hs-varid'>mappend</span> <span class='hs-varid'>m1</span> <span class='hs-varid'>m2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varop'>$</span> <span class='hs-varid'>applyPrefsMod</span> <span class='hs-varid'>m2</span> <span class='hs-varop'>.</span> <span class='hs-varid'>applyPrefsMod</span> <span class='hs-varid'>m1</span>
<a name="line-366"></a>
<a name="line-367"></a><a name="multiSuffix"></a><span class='hs-definition'>multiSuffix</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrefsMod</span>
<a name="line-368"></a><span class='hs-definition'>multiSuffix</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>prefMultiSuffix</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-369"></a>
<a name="line-370"></a><a name="disambiguate"></a><span class='hs-definition'>disambiguate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrefsMod</span>
<a name="line-371"></a><span class='hs-definition'>disambiguate</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>prefDisambiguate</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span> <span class='hs-layout'>}</span>
<a name="line-372"></a>
<a name="line-373"></a><a name="showHelpOnError"></a><span class='hs-definition'>showHelpOnError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrefsMod</span>
<a name="line-374"></a><span class='hs-definition'>showHelpOnError</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>prefShowHelpOnError</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span> <span class='hs-layout'>}</span>
<a name="line-375"></a>
<a name="line-376"></a><a name="noBacktrack"></a><span class='hs-definition'>noBacktrack</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrefsMod</span>
<a name="line-377"></a><span class='hs-definition'>noBacktrack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>prefBacktrack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span> <span class='hs-layout'>}</span>
<a name="line-378"></a>
<a name="line-379"></a><a name="columns"></a><span class='hs-definition'>columns</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>PrefsMod</span>
<a name="line-380"></a><span class='hs-definition'>columns</span> <span class='hs-varid'>cols</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>p</span> <span class='hs-layout'>{</span> <span class='hs-varid'>prefColumns</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>cols</span> <span class='hs-layout'>}</span>
<a name="line-381"></a>
<a name="line-382"></a><a name="prefs"></a><span class='hs-definition'>prefs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PrefsMod</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ParserPrefs</span>
<a name="line-383"></a><span class='hs-definition'>prefs</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>applyPrefsMod</span> <span class='hs-varid'>m</span> <span class='hs-varid'>base</span>
<a name="line-384"></a> <span class='hs-keyword'>where</span>
<a name="line-385"></a> <span class='hs-varid'>base</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ParserPrefs</span>
<a name="line-386"></a> <span class='hs-layout'>{</span> <span class='hs-varid'>prefMultiSuffix</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-387"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefDisambiguate</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-388"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefShowHelpOnError</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-389"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefBacktrack</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-390"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>prefColumns</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>80</span> <span class='hs-layout'>}</span>
<a name="line-391"></a>
<a name="line-392"></a><span class='hs-comment'>-- convenience shortcuts</span>
<a name="line-393"></a>
<a name="line-394"></a><a name="idm"></a><span class='hs-comment'>-- | Trivial option modifier.</span>
<a name="line-395"></a><span class='hs-definition'>idm</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Monoid</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>m</span>
<a name="line-396"></a><span class='hs-definition'>idm</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mempty</span>
<a name="line-397"></a>
<a name="line-398"></a><a name="defaultPrefs"></a><span class='hs-comment'>-- | Default preferences.</span>
<a name="line-399"></a><span class='hs-definition'>defaultPrefs</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParserPrefs</span>
<a name="line-400"></a><span class='hs-definition'>defaultPrefs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>prefs</span> <span class='hs-varid'>idm</span>
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