This file is indexed.

/usr/share/gps/plug-ins/customFiles.xsd is in gnat-gps-common 5.3dfsg-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="utf-8" ?>

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">

   <!--  No targetNamespace specified here, so that we can validate files
         even if they don't use namespaces. -->

   <xsd:annotation>
      <xsd:documentation xml:lang="en">
This file contains the XML Schema description of the GPS customization files.
It is used by GPS to validate the customization files it is given as input.
      </xsd:documentation>
   </xsd:annotation>

   <xsd:complexType name="gps_all_nodes">
     <xsd:choice minOccurs="0" maxOccurs="unbounded">
       <xsd:element ref="action" />
       <xsd:element ref="alias" />
       <xsd:element ref="button" />
       <xsd:element ref="case_exceptions" />
       <xsd:element ref="contextual" />
       <xsd:element ref="docgen_backend" />
       <xsd:element ref="documentation_file" />
       <xsd:element ref="entry" />
       <xsd:element ref="filter" />
       <xsd:element ref="key" />
       <xsd:element ref="Language" />
       <xsd:element ref="menu" />
       <xsd:element ref="pref" />
       <xsd:element ref="preference" />
       <xsd:element ref="project_attribute" />
       <xsd:element ref="stock" />
       <xsd:element ref="submenu" />
       <xsd:element ref="theme" />
       <xsd:element ref="tool" />
       <xsd:element ref="vcs" />
       <xsd:element ref="vsearch-pattern" />
     </xsd:choice>
   </xsd:complexType>

   <xsd:element name="GPS" type="gps_all_nodes">
      <xsd:annotation>
         <xsd:documentation xml:lang="en">
This is the root element of all GPS customization files, if they contain
several kind of customization. If you are just configuring one specific part
(a single menu, a single action,...), you can use the corresponding node as
the root node in the customization file. As usual, there can be only one such
root node.
         </xsd:documentation>
      </xsd:annotation>
   </xsd:element>

   <xsd:simpleType name="emptyNode" >
     <xsd:restriction base="xsd:string">
       <xsd:length value="0" />
     </xsd:restriction>
   </xsd:simpleType>

   <xsd:simpleType name="character">
     <xsd:restriction base="xsd:string">
       <xsd:length value="1" />
     </xsd:restriction>
   </xsd:simpleType>

   <!--  Almost the same as xsd:boolean, but we allow for case insensitive
         values -->
   <xsd:simpleType name="boolean">
     <xsd:restriction base="xsd:string">
       <xsd:enumeration value="true" />
       <xsd:enumeration value="false" />
       <xsd:enumeration value="TRUE" />
       <xsd:enumeration value="FALSE" />
       <xsd:enumeration value="True" />
       <xsd:enumeration value="False" />
       <xsd:enumeration value="1" />
       <xsd:enumeration value="0" />
     </xsd:restriction>
   </xsd:simpleType>

   <!--********************************************************************
     **             Theme                                                **
     ********************************************************************-->

   <xsd:element name="theme">
     <xsd:complexType>
       <xsd:complexContent>
         <xsd:extension base="gps_all_nodes">
           <xsd:attribute name="name"        use="required" type="xsd:string" />
           <xsd:attribute name="description" use="optional" type="xsd:string" />
           <xsd:attribute name="category"    use="optional" type="xsd:string" default="General" />
         </xsd:extension>
       </xsd:complexContent>
     </xsd:complexType>
   </xsd:element>

   <!--********************************************************************
     **             Actions                                              **
     ********************************************************************-->

   <xsd:group name="gps_command">
     <xsd:annotation>
       <xsd:documentation xml:lang="en">The possible elements that can be used
to describe an action that needs to be performed by GPS, either externally or
internally</xsd:documentation>
     </xsd:annotation>
     <xsd:choice>
       <xsd:element ref="external" />
       <xsd:element ref="shell" />
     </xsd:choice>
   </xsd:group>

   <xsd:group name="gps_command_with_on_failure">
     <xsd:annotation>
       <xsd:documentation xml:lang="en">Same as the commands group, except that
the commands can also be followed by an on-failure node which indicates a set
of commands to perform if the command fails</xsd:documentation>
     </xsd:annotation>
     <xsd:sequence>
       <xsd:group   ref="gps_command" minOccurs="1" maxOccurs="1" />
       <xsd:element name="on-failure" minOccurs="0" maxOccurs="1">
         <xsd:complexType>
           <xsd:sequence minOccurs="1" maxOccurs="unbounded">
             <xsd:group ref="gps_command" />
           </xsd:sequence>
         </xsd:complexType>
       </xsd:element>
     </xsd:sequence>
   </xsd:group>

   <xsd:element name="action">
     <xsd:complexType>
       <xsd:choice minOccurs="1" maxOccurs="unbounded">
         <xsd:group ref="gps_command_with_on_failure" minOccurs="1" maxOccurs="unbounded" />
         <xsd:group ref="gps_filter" minOccurs="0" maxOccurs="1" />
         <xsd:element name="description" type="xsd:string" minOccurs="0" maxOccurs="1" />
       </xsd:choice>
       <xsd:attribute name="name"         use="required" type="xsd:string" />
       <xsd:attribute name="category"     use="optional" type="xsd:string"   default="General"/>
       <xsd:attribute name="output"       use="optional" type="xsd:string"   default=""/>
       <xsd:attribute name="show-command" use="optional" type="boolean"      default="true"/>
       <xsd:attribute name="show-task-manager" use="optional" type="boolean"      default="false"/>
     </xsd:complexType>
   </xsd:element>

   <xsd:element name="external">
     <xsd:complexType>
       <xsd:simpleContent>
         <xsd:extension base="xsd:string">
           <xsd:attribute name="show-command"     use="optional" type="boolean"     default="true" />
           <xsd:attribute name="show-task-manager" use="optional" type="boolean"      default="false"/>
           <xsd:attribute name="output"           use="optional" type="xsd:string"  default="" />
           <xsd:attribute name="progress-regexp"  use="optional" type="xsd:string"  default="" />
           <xsd:attribute name="progress-current" use="optional" type="xsd:byte"    default="1" />
           <xsd:attribute name="progress-final"   use="optional" type="xsd:byte"    default="2" />
           <xsd:attribute name="progress-hide"    use="optional" type="boolean"     default="true" />
         </xsd:extension>
       </xsd:simpleContent>
     </xsd:complexType>
   </xsd:element>

   <xsd:simpleType name="shell_language">
     <xsd:annotation>
       <xsd:documentation xml:lang="en">List of all valid languages that can be used
         for shell commands</xsd:documentation>
     </xsd:annotation>
     <xsd:restriction base="xsd:string">
       <xsd:enumeration value="shell" />
       <xsd:enumeration value="python" />
     </xsd:restriction>
   </xsd:simpleType>

   <xsd:element name="shell">
     <xsd:complexType>
       <xsd:simpleContent>
         <xsd:extension base="xsd:string">
           <xsd:attribute name="lang"         use="optional" type="shell_language" default="shell" />
           <xsd:attribute name="show-command" use="optional" type="boolean"        default="true" />
           <xsd:attribute name="output"       use="optional" type="xsd:string"     default="" />
         </xsd:extension>
       </xsd:simpleContent>
     </xsd:complexType>
   </xsd:element>

   <!--********************************************************************
     **             Filters                                              **
     ** This schema cannot represent that if a filter has the "id"       **
     ** attribute, no other attribute is valid                           **
     ********************************************************************-->

   <xsd:group name="gps_filter">
     <xsd:annotation>
       <xsd:documentation xml:lang="en">The various ways a filter can be specified,
to limit the scope of an action for instance</xsd:documentation>
     </xsd:annotation>
     <xsd:choice>
       <xsd:element ref="filter" />
       <xsd:element ref="filter_and" />
       <xsd:element ref="filter_or" />
     </xsd:choice>
   </xsd:group>

   <xsd:attributeGroup name="gps_filter_attributes">
     <xsd:attribute name="name"  use="optional" type="xsd:string" default="" />
     <xsd:attribute name="error" use="optional" type="xsd:string" default="" />
   </xsd:attributeGroup>

   <xsd:element name="filter">
     <xsd:complexType>
       <xsd:attributeGroup ref="gps_filter_attributes" />
       <xsd:attribute name="id"         use="optional" type="xsd:string"     default="" />
       <xsd:attribute name="language"   use="optional" type="xsd:string"     default="" />
       <xsd:attribute name="shell_cmd"  use="optional" type="xsd:string"     default="" />
       <xsd:attribute name="shell_lang" use="optional" type="shell_language" default="shell" />
       <xsd:attribute name="module"     use="optional" type="xsd:string"     default="" />
     </xsd:complexType>
   </xsd:element>

   <xsd:complexType name="gps_filter_type">
     <xsd:group ref="gps_filter" minOccurs="2" maxOccurs="2" />
     <xsd:attributeGroup ref="gps_filter_attributes" />
   </xsd:complexType>
   <xsd:element name="filter_and" type="gps_filter_type" />
   <xsd:element name="filter_or"  type="gps_filter_type" />

   <!--********************************************************************
     **             Menus                                                **
     ********************************************************************-->

   <xsd:element name="submenu">
     <xsd:complexType>
       <xsd:choice minOccurs="0" maxOccurs="unbounded">
         <xsd:element name="title"  maxOccurs="1" type="xsd:string" />
         <xsd:element ref="submenu" maxOccurs="unbounded" />
         <xsd:element ref="menu"    maxOccurs="unbounded" />
       </xsd:choice>
       <xsd:attribute name="before" use="optional" type="xsd:string" default="" />
       <xsd:attribute name="after"  use="optional" type="xsd:string" default="" />
     </xsd:complexType>
   </xsd:element>

   <xsd:element name="menu">
     <xsd:complexType>
       <xsd:choice>
         <xsd:element name="title" minOccurs="1" maxOccurs="1" type="xsd:string" />
       </xsd:choice>
       <xsd:attribute name="action" use="required" type="xsd:string" />
       <xsd:attribute name="before" use="optional" type="xsd:string" default="" />
       <xsd:attribute name="after"  use="optional" type="xsd:string" default="" />
     </xsd:complexType>
   </xsd:element>

   <!--********************************************************************
     **             Contextual                                           **
     ********************************************************************-->

   <xsd:element name="contextual">
     <xsd:complexType>
       <xsd:choice>
         <xsd:element name="title" type="xsd:string" minOccurs="0" maxOccurs="1" />
       </xsd:choice>
       <xsd:attribute name="action" use="required" type="xsd:string" />
       <xsd:attribute name="before" use="optional" type="xsd:string" default="" />
       <xsd:attribute name="after"  use="optional" type="xsd:string" default="" />
     </xsd:complexType>
   </xsd:element>

   <!--********************************************************************
     **             Keys                                                 **
     ********************************************************************-->

   <xsd:element name="key">
     <xsd:complexType>
       <xsd:simpleContent>
         <xsd:extension base="xsd:string">
            <xsd:attribute name="action" use="required" type="xsd:string" />
         </xsd:extension>
       </xsd:simpleContent>
     </xsd:complexType>
   </xsd:element>

   <!--********************************************************************
     **             Tools and switches                                   **
     ********************************************************************-->

   <xsd:attributeGroup name="gps_switches_attribute">
     <xsd:attribute name="line"      use="optional" type="xsd:byte"   default="1" />
     <xsd:attribute name="column"    use="optional" type="xsd:byte"   default="1" />
     <xsd:attribute name="label"     use="required" type="xsd:string" />
     <xsd:attribute name="switch"    use="required" type="xsd:string" />
     <xsd:attribute name="tip"       use="optional" type="xsd:string" default="" />
   </xsd:attributeGroup>

   <xsd:complexType name="gps_switches_spin">
     <xsd:attributeGroup ref="gps_switches_attribute" />
     <xsd:attribute name="min"     use="optional" type="xsd:integer" default="1" />
     <xsd:attribute name="max"     use="optional" type="xsd:integer" default="1" />
     <xsd:attribute name="default" use="optional" type="xsd:integer" default="1" />
     <xsd:attribute name="separator" use="optional" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_combo_entry">
     <xsd:attribute name="label" use="required" type="xsd:string" />
     <xsd:attribute name="value" use="required" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_combo">
     <xsd:sequence maxOccurs="unbounded">
       <xsd:element name="combo-entry" type="gps_switches_combo_entry" maxOccurs="unbounded" />
     </xsd:sequence>
     <xsd:attributeGroup ref="gps_switches_attribute" />
     <xsd:attribute name="noswitch" use="optional" type="xsd:string" default="" />
     <xsd:attribute name="nodigit"  use="optional" type="xsd:string" default="" />
     <xsd:attribute name="separator" use="optional" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_title">
     <xsd:simpleContent>
       <xsd:extension base="xsd:string">
         <xsd:attribute name="line"        use="optional" type="xsd:byte"   default="1" />
         <xsd:attribute name="column"      use="optional" type="xsd:byte"   default="1" />
         <xsd:attribute name="line-span"   use="optional" type="xsd:byte"   default="1" />
         <xsd:attribute name="column-span" use="optional" type="xsd:byte"   default="1" />
       </xsd:extension>
     </xsd:simpleContent>
   </xsd:complexType>

   <xsd:complexType name="gps_switches_check">
     <xsd:attributeGroup ref="gps_switches_attribute" />
   </xsd:complexType>

   <xsd:simpleType name="gps_switches_dependency_status">
     <xsd:restriction base="xsd:string">
       <xsd:enumeration value="on" />
       <xsd:enumeration value="off" />
     </xsd:restriction>
   </xsd:simpleType>

   <xsd:complexType name="gps_switches_dependency">
     <xsd:attribute name="master-page"   use="required" type="xsd:string" />
     <xsd:attribute name="master-switch" use="required" type="xsd:string" />
     <xsd:attribute name="slave-page"    use="required" type="xsd:string" />
     <xsd:attribute name="slave-switch"  use="required" type="xsd:string" />
     <xsd:attribute name="master-status" use="required" type="gps_switches_dependency_status" />
     <xsd:attribute name="slave-status"  use="required" type="gps_switches_dependency_status" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_radio">
     <xsd:choice minOccurs="1" maxOccurs="1" >
       <xsd:element name="radio-entry">
         <xsd:complexType>
           <xsd:simpleContent>
             <xsd:extension base="xsd:string">
               <xsd:attribute name="label"  use="required" type="xsd:string" />
               <xsd:attribute name="switch" use="required" type="xsd:string" />
               <xsd:attribute name="tip"    use="optional" type="xsd:string" default="" />
             </xsd:extension>
           </xsd:simpleContent>
         </xsd:complexType>
       </xsd:element>
     </xsd:choice>
     <xsd:attribute name="line"        use="optional" type="xsd:byte"   default="1" />
     <xsd:attribute name="column"      use="optional" type="xsd:byte"   default="1" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_field">
     <xsd:attributeGroup ref="gps_switches_attribute" />
     <xsd:attribute name="separator"    use="optional" type="xsd:string" />
     <xsd:attribute name="as-directory" use="optional" type="boolean" default="false" />
     <xsd:attribute name="as-file"      use="optional" type="boolean" default="false" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_expansion">
     <xsd:sequence minOccurs="0" maxOccurs="unbounded" >
       <xsd:element name="entry">
         <xsd:complexType>
           <xsd:attribute name="switch" use="required" type="xsd:string" />
         </xsd:complexType>
       </xsd:element>
     </xsd:sequence>
     <xsd:attribute name="switch" use="required" type="xsd:string" />
     <xsd:attribute name="alias"  use="optional" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_switches_popup">
     <xsd:choice maxOccurs="unbounded" >
       <xsd:group ref="gps_switches"/>
     </xsd:choice>
     <xsd:attribute name="line"    use="optional" type="xsd:byte"   default="1" />
     <xsd:attribute name="column"  use="optional" type="xsd:byte"   default="1" />
     <xsd:attribute name="label"   use="required" type="xsd:string" />
     <xsd:attribute name="lines"   use="optional" type="xsd:byte"   default="1" />
     <xsd:attribute name="columns" use="optional" type="xsd:byte"   default="1" />
   </xsd:complexType>

   <xsd:group name="gps_switches">
     <xsd:choice>
       <xsd:element name="title"      type="gps_switches_title"      maxOccurs="unbounded" />
       <xsd:element name="check"      type="gps_switches_check"      maxOccurs="unbounded" />
       <xsd:element name="spin"       type="gps_switches_spin"       maxOccurs="unbounded" />
       <xsd:element name="radio"      type="gps_switches_radio"      maxOccurs="unbounded" />
       <xsd:element name="field"      type="gps_switches_field"      maxOccurs="unbounded" />
       <xsd:element name="combo"      type="gps_switches_combo"      maxOccurs="unbounded" />
       <xsd:element name="dependency" type="gps_switches_dependency" maxOccurs="unbounded" />
       <xsd:element name="expansion"  type="gps_switches_expansion"  maxOccurs="unbounded" />
     </xsd:choice>
   </xsd:group>

   <xsd:complexType name="gps_switches">
       <xsd:choice minOccurs="1" maxOccurs="unbounded">
         <xsd:group ref="gps_switches" minOccurs="0" maxOccurs="unbounded"/>
         <xsd:element name="popup"      type="gps_switches_popup"      maxOccurs="unbounded" />
       </xsd:choice>
       <xsd:attribute name="lines"     use="optional" type="xsd:byte"   default="1" />
       <xsd:attribute name="columns"   use="optional" type="xsd:byte"   default="1" />
       <xsd:attribute name="separator" use="optional" type="xsd:string" default="" />
   </xsd:complexType>

   <xsd:element name="tool">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="switches"         type="gps_switches" maxOccurs="1" />
         <xsd:element name="language"         type="xsd:string"   minOccurs="0" maxOccurs="unbounded" />
         <xsd:element name="initial-cmd-line" type="xsd:string"   maxOccurs="1" />
       </xsd:choice>
       <xsd:attribute name="name"      use="required" type="xsd:string" />
       <xsd:attribute name="package"   use="optional" type="xsd:string" default="ide" />
       <xsd:attribute name="attribute" use="optional" type="xsd:string" default="default_switches" />
       <xsd:attribute name="index"     use="optional" type="xsd:string" />
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Vsearch pattern                                    **
     ********************************************************************-->

   <xsd:element name="vsearch-pattern">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="name"   type="xsd:string" maxOccurs="1" />
         <xsd:element name="regexp" type="xsd:string" maxOccurs="1" />
         <xsd:element name="string" type="xsd:string" maxOccurs="1" />
       </xsd:choice>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Alias                                              **
     ********************************************************************-->

   <xsd:element name="alias">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="param" maxOccurs="unbounded">
           <xsd:complexType>
             <xsd:simpleContent>
               <xsd:extension base="xsd:string">
                  <xsd:attribute name="name"        use="required" type="xsd:string" />
                  <xsd:attribute name="environment" use="optional" type="boolean" default="false" />
               </xsd:extension>
             </xsd:simpleContent>
           </xsd:complexType>
         </xsd:element>
         <xsd:element name="text" type="xsd:string" maxOccurs="1" />
       </xsd:choice>
       <xsd:attribute name="name"   use="required" type="xsd:string" />
       <xsd:attribute name="indent" use="optional" type="boolean" default="true" />
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Language                                           **
     ********************************************************************-->

   <xsd:complexType name="gps_language_context">
     <xsd:choice maxOccurs="unbounded">
       <xsd:element name="Comment_Start"          type="xsd:string"  maxOccurs="1" />
       <xsd:element name="Comment_End"            type="xsd:string"  maxOccurs="1" />
       <xsd:element name="New_Line_Comment_Start" type="xsd:string"  maxOccurs="1" />
       <xsd:element name="String_Delimiter"       type="xsd:string"  maxOccurs="1" />
       <xsd:element name="Quote_Character"        type="character"   maxOccurs="1" />
       <xsd:element name="Constant_Character"     type="character"   maxOccurs="1" />
       <xsd:element name="Can_Indent"             type="boolean" maxOccurs="1" />
       <xsd:element name="Syntax_Highlighting"    type="boolean" maxOccurs="1" />
       <xsd:element name="Case_Sensitive"         type="boolean" maxOccurs="1" />
     </xsd:choice>
   </xsd:complexType>

   <xsd:simpleType name="gps_language_category_list">
     <xsd:restriction base="xsd:string">
       <xsd:enumeration value="package" />
       <xsd:enumeration value="namespace" />
       <xsd:enumeration value="procedure" />
       <xsd:enumeration value="function" />
       <xsd:enumeration value="task" />
       <xsd:enumeration value="method" />
       <xsd:enumeration value="constructor" />
       <xsd:enumeration value="destructor" />
       <xsd:enumeration value="protected" />
       <xsd:enumeration value="entry" />
       <xsd:enumeration value="class" />
       <xsd:enumeration value="structure" />
       <xsd:enumeration value="union" />
       <xsd:enumeration value="type" />
       <xsd:enumeration value="subtype" />
       <xsd:enumeration value="variable" />
       <xsd:enumeration value="local_variable" />
       <xsd:enumeration value="representation_clause" />
       <xsd:enumeration value="with" />
       <xsd:enumeration value="use" />
       <xsd:enumeration value="include" />
       <xsd:enumeration value="loop_statement" />
       <xsd:enumeration value="case_statement" />
       <xsd:enumeration value="if_statement" />
       <xsd:enumeration value="select_statement" />
       <xsd:enumeration value="accept_statement" />
       <xsd:enumeration value="declare_block" />
       <xsd:enumeration value="simple_block" />
       <xsd:enumeration value="exception_handler" />
     </xsd:restriction>
   </xsd:simpleType>

   <xsd:complexType name="gps_language_category">
     <xsd:choice maxOccurs="unbounded">
       <xsd:element name="Name"      type="gps_language_category_list" minOccurs="1" maxOccurs="1" />
       <xsd:element name="Pattern"   type="xsd:string"                 minOccurs="1" maxOccurs="1" />
       <xsd:element name="Index"     type="xsd:byte"                   minOccurs="1" maxOccurs="1" />
       <xsd:element name="End_Index" type="xsd:byte"                   minOccurs="0" maxOccurs="1" />
       <xsd:element name="Icon"      type="xsd:string"                 minOccurs="1" maxOccurs="1" />
     </xsd:choice>
   </xsd:complexType>

   <xsd:complexType name="gps_language_categories">
     <xsd:choice maxOccurs="unbounded">
       <xsd:element name="Category" type="gps_language_category" />
     </xsd:choice>
   </xsd:complexType>

   <xsd:element name="Language">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="Name"        type="xsd:string" minOccurs="1" maxOccurs="1" />
         <xsd:element name="Parent"      type="xsd:string" minOccurs="0" maxOccurs="1" />
         <xsd:element name="Spec_Suffix" type="xsd:string" minOccurs="0" maxOccurs="1" />
         <xsd:element name="Body_Suffix" type="xsd:string" minOccurs="0" maxOccurs="1" />
         <xsd:element name="Extension" minOccurs="0" maxOccurs="unbounded" >
           <xsd:simpleType>
             <xsd:restriction base="xsd:string">
               <xsd:pattern value="\..*" />
             </xsd:restriction>
           </xsd:simpleType>
         </xsd:element>
         <xsd:element name="Keywords"         type="xsd:string"              minOccurs="0" maxOccurs="unbounded" />
         <xsd:element name="Engine"           type="xsd:string"              maxOccurs="1" />
         <xsd:element name="Comment_Line"     type="xsd:string"              maxOccurs="1" />
         <xsd:element name="Parse_Constructs" type="xsd:string"              maxOccurs="1" />
         <xsd:element name="Format_Buffer"    type="xsd:string"              maxOccurs="1" />
         <xsd:element name="Parse_Entities"   type="xsd:string"              maxOccurs="1" />
         <xsd:element name="Context"          type="gps_language_context"    maxOccurs="1" />
         <xsd:element name="Categories"       type="gps_language_categories" maxOccurs="1" />

         <!--  This element is currently not documented in gps.texi, but it
               isn't used either in the Ada core. Since it is present in some
               XML files, we have to support it at the schema level, though -->
         <xsd:element name="Project_Field">
           <xsd:complexType>
             <xsd:simpleContent>
               <xsd:restriction base="xsd:string">
                 <xsd:attribute name="name"  type="xsd:string" use="required" />
                 <xsd:attribute name="index" type="xsd:string" use="required" />
               </xsd:restriction>
             </xsd:simpleContent>
            </xsd:complexType>
         </xsd:element>
       </xsd:choice>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             VCS                                                **
     ********************************************************************-->

   <xsd:complexType name="gps_vcs_operation">
     <xsd:attribute name="action" use="required" type="xsd:string" />
     <xsd:attribute name="label"  use="required" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_vcs_status">
     <xsd:attribute name="label" use="required" type="xsd:string" />
     <xsd:attribute name="stock" use="required" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_vcs_status_parser">
     <xsd:choice maxOccurs="unbounded">
       <xsd:element name="regexp"                    type="xsd:string" minOccurs="1" maxOccurs="1" />
       <xsd:element name="file_index"                type="xsd:byte"   maxOccurs="1" />
       <xsd:element name="status_index"              type="xsd:byte"   maxOccurs="1" />
       <xsd:element name="local_revision_index"      type="xsd:byte"   maxOccurs="1" />
       <xsd:element name="repository_revision_index" type="xsd:byte"   maxOccurs="1" />
       <xsd:element name="status_matcher"            type="xsd:byte"   maxOccurs="unbounded" >
         <xsd:complexType>
           <xsd:simpleContent>
             <xsd:restriction base="xsd:string">
               <xsd:attribute name="label" use="required" type="xsd:string" />
             </xsd:restriction>
           </xsd:simpleContent>
         </xsd:complexType>
       </xsd:element>
     </xsd:choice>
     <xsd:attribute name="label" use="required" type="xsd:string" />
     <xsd:attribute name="stock" use="required" type="xsd:string" />
   </xsd:complexType>

   <xsd:complexType name="gps_vcs_annotations_parser">
     <xsd:choice maxOccurs="unbounded">
       <xsd:element name="regexp"                    type="xsd:string" minOccurs="1" maxOccurs="1" />
       <xsd:element name="repository_revision_index" type="xsd:byte"   maxOccurs="1" />
       <xsd:element name="file_index"                type="xsd:byte"   maxOccurs="1" />
     </xsd:choice>
   </xsd:complexType>

   <xsd:element name="vcs">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
          <xsd:element name="status_files"        type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="status_dir"          type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="local_status_files"  type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="open"                type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="update"              type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="update_dir"          type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="resolved"            type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="commit"              type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="commit_dir"          type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="history"             type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="history_revision"    type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="annotate"            type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="add"                 type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="add_no_commit"       type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="remove"              type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="revert"              type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="diff_head"           type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="diff_base_head"      type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="diff_working"        type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="diff"                type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="diff2"               type="gps_vcs_operation"          maxOccurs="1"/>
          <xsd:element name="status"              type="gps_vcs_status"             maxOccurs="unbounded" />
          <xsd:element name="status_parser"       type="gps_vcs_status_parser"      maxOccurs="unbounded" />
          <xsd:element name="local_status_parser" type="gps_vcs_status_parser"      maxOccurs="unbounded" />
          <xsd:element name="annotations_parser"  type="gps_vcs_annotations_parser" maxOccurs="unbounded" />
       </xsd:choice>
       <xsd:attribute name="name"            use="required" type="xsd:string" />
       <xsd:attribute name="absolute_names"  use="required" type="boolean" />
       <xsd:attribute name="atomic_commands" use="optional" type="boolean" default="false"/>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Docgen                                             **
     ********************************************************************-->

   <xsd:element name="docgen_backend">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="block_template"                    type="xsd:string" maxOccurs="1" />
         <xsd:element name="calls_references_template"         type="xsd:string" maxOccurs="1" />
         <xsd:element name="caller_references_template"        type="xsd:string" maxOccurs="1" />
         <xsd:element name="char_template"                     type="xsd:string" maxOccurs="1" />
         <xsd:element name="comment_template"                  type="xsd:string" maxOccurs="1" />
         <xsd:element name="description"                       type="xsd:string" minOccurs="1" maxOccurs="1" />
         <xsd:element name="description_template"              type="xsd:string" maxOccurs="1" />
         <xsd:element name="entity_template"                   type="xsd:string" maxOccurs="1" />
         <xsd:element name="exception_template"                type="xsd:string" maxOccurs="1" />
         <xsd:element name="extension"                         type="xsd:string" minOccurs="1" maxOccurs="1" />
         <xsd:element name="file_footer_template"              type="xsd:string" maxOccurs="1" />
         <xsd:element name="file_header_template"              type="xsd:string" maxOccurs="1" />
         <xsd:element name="footer_template"                   type="xsd:string" maxOccurs="1" />
         <xsd:element name="header_template"                   type="xsd:string" maxOccurs="1" />
         <xsd:element name="index_footer_template"             type="xsd:string" maxOccurs="1" />
         <xsd:element name="item_index_template"               type="xsd:string" maxOccurs="1" />
         <xsd:element name="keyword_template"                  type="xsd:string" maxOccurs="1" />
         <xsd:element name="link_template"                     type="xsd:string" maxOccurs="1" />
         <xsd:element name="main_frame_template"               type="xsd:string" maxOccurs="1" />
         <xsd:element name="package_desc_template"             type="xsd:string" maxOccurs="1" />
         <xsd:element name="package_template"                  type="xsd:string" maxOccurs="1" />
         <xsd:element name="private_header_template"           type="xsd:string" maxOccurs="1" />
         <xsd:element name="private_index_header_template"     type="xsd:string" maxOccurs="1" />
         <xsd:element name="public_index_header_template"      type="xsd:string" maxOccurs="1" />
         <xsd:element name="string_template"                   type="xsd:string" maxOccurs="1" />
         <xsd:element name="subprogram_index_header_template"  type="xsd:string" maxOccurs="1" />
         <xsd:element name="subprogram_template"               type="xsd:string" maxOccurs="1" />
         <xsd:element name="subtitle_template"                 type="xsd:string" maxOccurs="1" />
         <xsd:element name="tagged_type_index_header_template" type="xsd:string" maxOccurs="1" />
         <xsd:element name="tagged_type_index_template"        type="xsd:string" maxOccurs="1" />
         <xsd:element name="tagged_type_template"              type="xsd:string" maxOccurs="1" />
         <xsd:element name="type_index_header_template"        type="xsd:string" maxOccurs="1" />
         <xsd:element name="type_template"                     type="xsd:string" maxOccurs="1" />
         <xsd:element name="unit_index_header_template"        type="xsd:string" maxOccurs="1" />
         <xsd:element name="variable_template"                 type="xsd:string" maxOccurs="1" />
         <xsd:element name="with_template"                     type="xsd:string" maxOccurs="1" />
       </xsd:choice>
       <xsd:attribute name="name"   use="required" type="xsd:string" />
       <xsd:attribute name="format" use="optional" type="xsd:string" fixed="text" />
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Icons                                              **
     ********************************************************************-->

   <xsd:element name="stock">
     <xsd:complexType>
       <xsd:sequence maxOccurs="unbounded">
         <xsd:element name="icon">
           <xsd:complexType>
             <xsd:attribute name="id"   use="required" type="xsd:string" />
             <xsd:attribute name="file" use="required" type="xsd:string" />
           </xsd:complexType>
         </xsd:element>
       </xsd:sequence>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Preferences                                        **
     ********************************************************************-->

   <xsd:simpleType name="gps_preference_type">
     <xsd:restriction base="xsd:string">
       <xsd:enumeration value="boolean" />
       <xsd:enumeration value="integer" />
       <xsd:enumeration value="string"  />
       <xsd:enumeration value="color"   />
       <xsd:enumeration value="font"    />
       <xsd:enumeration value="choices" />
     </xsd:restriction>
   </xsd:simpleType>

   <xsd:element name="preference">
     <xsd:complexType>
       <xsd:attribute name="name"    use="required" type="xsd:string" />
       <xsd:attribute name="page"    use="optional" type="xsd:string" default="General" />
       <xsd:attribute name="default" use="optional" type="xsd:string" />
       <xsd:attribute name="tip"     use="optional" type="xsd:string" default="" />
       <xsd:attribute name="label"   use="required" type="xsd:string" />
       <xsd:attribute name="type"    use="required" type="gps_preference_type" />
     </xsd:complexType>
   </xsd:element>

   <xsd:element name="pref">
     <xsd:complexType>
       <xsd:simpleContent>
         <xsd:restriction base="xsd:string">
           <xsd:attribute name="name" use="required" type="xsd:string" />
         </xsd:restriction>
       </xsd:simpleContent>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Project attributes                                 **
     ********************************************************************-->

   <xsd:complexType name="gps_project_attribute_string">
     <xsd:attribute name="default" use="optional" type="xsd:string" />
     <xsd:attribute name="type"    use="optional" default="">
       <xsd:simpleType>
         <xsd:restriction base="xsd:string">
           <xsd:enumeration value="" />
           <xsd:enumeration value="file" />
           <xsd:enumeration value="directory" />
         </xsd:restriction>
       </xsd:simpleType>
     </xsd:attribute>
   </xsd:complexType>

   <xsd:group name="gps_project_attribute_choice">
     <xsd:sequence>
       <xsd:element name="choice" type="xsd:string" maxOccurs="unbounded">
         <xsd:complexType>
           <xsd:simpleContent>
             <xsd:extension base="xsd:string">
               <xsd:attribute name="default" use="optional" type="boolean" default="false" />
             </xsd:extension>
           </xsd:simpleContent>
         </xsd:complexType>
       </xsd:element>
       <xsd:element name="string" type="emptyNode"  maxOccurs="1" />
     </xsd:sequence>
   </xsd:group>

   <xsd:complexType name="gps_project_attribute_shell">
     <xsd:simpleContent>
       <xsd:extension base="xsd:string">
         <xsd:attribute name="lang"    use="optional" type="shell_language" default="shell" />
         <xsd:attribute name="default" use="optional" type="xsd:string"     default="" />
       </xsd:extension>
     </xsd:simpleContent>
   </xsd:complexType>

   <xsd:group name="gps_project_attribute_types">
     <xsd:choice>
       <xsd:group   ref="gps_project_attribute_choice" />
       <xsd:element name="string"            type="gps_project_attribute_string"/>
       <xsd:element name="shell"             type="gps_project_attribute_shell" />
     </xsd:choice>
   </xsd:group>

   <xsd:complexType name="gps_project_attribute_index">
     <xsd:choice>
       <xsd:group ref="gps_project_attribute_types" minOccurs="1" maxOccurs="1" />
     </xsd:choice>
     <xsd:attribute name="attribute" use="required" type="xsd:string" />
     <xsd:attribute name="package"   use="optional" type="xsd:string" default="" />
   </xsd:complexType>

   <xsd:complexType name="gps_project_attribute_specialized_index">
     <xsd:choice>
       <xsd:group ref="gps_project_attribute_types" minOccurs="1" maxOccurs="1" />
     </xsd:choice>
     <xsd:attribute name="value" use="required" type="xsd:string" />
   </xsd:complexType>

   <xsd:element name="project_attribute">
     <xsd:complexType>
       <xsd:choice>
         <xsd:group   ref="gps_project_attribute_types" />
         <xsd:sequence>
           <xsd:element name="index"             type="gps_project_attribute_index" minOccurs="1" maxOccurs="1" />
           <xsd:element name="specialized_index" type="gps_project_attribute_specialized_index" maxOccurs="unbounded" />
         </xsd:sequence>
       </xsd:choice>
       <xsd:attribute name="package"              use="optional" type="xsd:string" default="" />
       <xsd:attribute name="name"                 use="required" type="xsd:string" />
       <xsd:attribute name="editor_page"          use="optional" type="xsd:string" default="General" />
       <xsd:attribute name="editor_section"       use="optional" type="xsd:string" default="" />
       <xsd:attribute name="label"                use="optional" type="xsd:string" />
       <xsd:attribute name="description"          use="optional" type="xsd:string" default="" />
       <xsd:attribute name="list"                 use="optional" type="boolean"    default="false" />
       <xsd:attribute name="ordered"              use="optional" type="boolean"    default="false" />
       <xsd:attribute name="omit_if_default"      use="optional" type="boolean"    default="true" />
       <xsd:attribute name="base_name_only"       use="optional" type="boolean"    default="false" />
       <xsd:attribute name="case_sensitive_index" use="optional" type="boolean"    default="false" />
       <xsd:attribute name="hide_in"              use="optional"                   default="" >
          <xsd:simpleType>
             <xsd:list itemType="xsd:string" />
          </xsd:simpleType>
       </xsd:attribute>
       <xsd:attribute name="disable_if_not_set"   use="optional" type="boolean"    default="false" />
       <xsd:attribute name="disable"              use="optional"                   default="">
          <xsd:simpleType>
             <xsd:list itemType="xsd:string" />
          </xsd:simpleType>
       </xsd:attribute>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Case exceptions                                    **
     ********************************************************************-->

   <xsd:element name="case_exceptions" >
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="word"      type="xsd:string" />
         <xsd:element name="substring" type="xsd:string" />
       </xsd:choice>
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Documentation                                      **
     ********************************************************************-->

   <xsd:element name="documentation_file">
     <xsd:complexType>
       <xsd:choice maxOccurs="unbounded">
         <xsd:element name="name"  type="xsd:string" minOccurs="0" maxOccurs="1" />
         <xsd:element name="shell" minOccurs="0" maxOccurs="1">
           <xsd:complexType>
             <xsd:simpleContent>
               <xsd:extension base="xsd:string">
                 <xsd:attribute name="lang" type="shell_language" use="optional" default="shell" />
               </xsd:extension>
             </xsd:simpleContent>
           </xsd:complexType>
         </xsd:element>
         <xsd:element name="descr"    type="xsd:string" minOccurs="0" maxOccurs="1" />
         <xsd:element name="category" type="xsd:string" minOccurs="0" maxOccurs="1" />
         <xsd:element name="menu"     type="xsd:string" minOccurs="0" maxOccurs="1" />
       </xsd:choice>
       <xsd:attribute name="before" use="optional" type="xsd:string" default="" />
       <xsd:attribute name="after"  use="optional" type="xsd:string" default="" />
     </xsd:complexType>
   </xsd:element>

   <!--******************************************************************
     **             Toolbar                                            **
     ********************************************************************-->

   <xsd:element name="button">
     <xsd:complexType>
       <xsd:choice minOccurs="0" maxOccurs="2">
         <xsd:element name="title"  type="xsd:string" maxOccurs="1"/>
         <xsd:element name="pixmap" type="xsd:string" maxOccurs="1"/>
       </xsd:choice>
       <xsd:attribute name="action" use="required" type="xsd:string" />
     </xsd:complexType>
   </xsd:element>

   <xsd:element name="entry">
     <xsd:complexType>
       <xsd:choice minOccurs="1" maxOccurs="unbounded">
         <xsd:element name="choice">
           <xsd:complexType>
             <xsd:simpleContent>
               <xsd:extension base="xsd:string">
                 <xsd:attribute name="on-selected" use="optional" type="xsd:string" />
               </xsd:extension>
             </xsd:simpleContent>
           </xsd:complexType>
         </xsd:element>
       </xsd:choice>
       <xsd:attribute name="id"         use="required" type="xsd:string" />
       <xsd:attribute name="label"      use="optional" type="xsd:string" default=""/>
       <xsd:attribute name="on-changed" use="optional" type="xsd:string" default=""/>
     </xsd:complexType>
   </xsd:element>

</xsd:schema>