This file is indexed.

/usr/bin/unwrapdiff is in patchutils 0.3.3-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
#!/usr/bin/perl
# -*- perl -*-
#
# unwrapdiff - demangle word-wrapped patches
# Copyright (C) 2002  Tim Waugh <twaugh@redhat.com>

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# Set non-zero if unwrapdiff doesn't work.  It won't fix it, but at least
# it'll say more.
$debug = 0;

$verbose = 0;
use Getopt::Std;
getopts('v-:', \%opts);
if ($opts{'-'} && $opts{'-'} eq 'version') {
    print "unwrapdiff - patchutils version 0.3.3\n";
    exit 0;
}
if ($opts{'-'} && $opts{'-'} eq 'help') {
    print "usage: unwrapdiff [OPTIONS] [FILE...]\n";
    print "OPTIONS are:\n";
    print "  -v              verbose output (to stderr)\n";
    exit 0;
}
if ($opts{'v'}) {
    $verbose = 1;
}

@line=<>;

$hazard = 0;

$joined = 0;
$i=-1;
$state=0;
$chunk_start = 0;
$orig=0;
$new=0;
$orig_offset=0;
$new_offset=0;
$misc="";
@blankline = ();
while ($i < $#line) {
    $i++;
    $_=$line[$i];
    if ($state == 0) {
	# Looking for the start of a file change.
	unless(/^--- /) {
	    next;
	}
	$state++;
    } elsif ($state == 1) {
	# Should be '+++ ...'.
	unless (/^\+\+\+ /) {
	    if (/^--- /) { $state = 1; }
	    elsif ($i + 1 < $#line &&
		   $line[$i + 1] =~ /^\+\+\+ /) {
		chomp($line[$i - 1]);
		$line[$i - 1] .= " " . $line[$i];
		splice (@line, $i, 1);
		$joined++;
		$i--;
		$state = 1;
	    }
	    else { $state = 0; }
	    next;
	}
	$state++;
    } elsif ($state == 2) {
	# Start of chunk.  Should be '@@ ...'
	unless (/^@@ -(\d+),?(\d+)? \+(\d+),?(\d+)? @@(.*)$/) {
	    if (/^--- /) { $state = 1; }
	    elsif ($i + 1 < $#line &&
		   $line[$i + 1] =~ /^@@ /) {
		chomp($line[$i - 1]);
		$line[$i - 1] .= " " . $line[$i];
		splice (@line, $i, 1);
		$joined++;
		$i--;
		$state = 2;
	    }
	    else { $state = 0; }
	    next;
	}
	($orig_offset,$orig,$new_offset,$new,$misc) = ($1,$2,$3,$4,$5);
	$state++;
	$orig = 1 unless defined($2);
	$new = 1 unless defined($4);
	$chunk_start = $i + 1;
	print STDERR "# State 2, $orig, $new\n" if $debug;
    } elsif ($state == 3) {
	# Counting lines.
	if (/^ /) {
	    $orig--;
	    $new--;
	}
	elsif (/^\+/) {
	    $new--;
	}
	elsif (/^-/) {
	    $orig--;
	}
	elsif (/^\\/) { }
	elsif (/^$/) {
	    # This blank line might be meant to represent ' ', or
	    # it might be superfluous altogether.  Try ' ' first,
	    # and if that doesn't work we can start deleting the lines
	    # that were originally blank until the counts work.
	    print STDERR "#Blank line $i\n" if $debug;
	    push (@blankline, $i);
	    $line[$i] = " \n";
	    $i--;
	    next;
	}
	elsif (/^@/) {
	    print STDERR "unwrapdiff: patch may be damaged near line "
		. ($i + $joined) . ".\n";
	    $hazard = 1;

	    $i--;
	    $state = 2;
	    @blankline = ();
	}
	elsif ($chunk_start < $i) {
	    $i--;
	    chomp($line[$i]);
	    print STDERR "Constructed line $i from:\n" .
		"$line[$i]\n$line[$i + 1]"
		if $debug || $verbose;

	    # Decide whether there was a space in the line
	    # before it was wrapped.  We have to use
	    # heuristics for this.
	    $space = " ";
	    $_ = $line[$i];
	    if (/(.)\1\1$/ && $line[$i + 1] =~ /^\Q$1$1\E/) {
		$space = "";
	    }

	    $line[$i] .= $space . $line[$i + 1];
	    splice (@line, $i + 1, 1);
	    $joined++;

	    print STDERR "to make:\n$line[$i]" if $debug || $verbose;
	}

	if ($orig < 1 && $new < 1) {
	    if ($orig != 0 || $new != 0) {
		# The numbers don't add up.
		if ($#blankline >= 0) {
		    # Let's see if we can fix it by deleting lines that
		    # were originally blank.

		    # Remove the last line.
		    print STDERR
			"# Removed $blankline[$#blankline] to fix counts\n"
			if $debug;
		    splice (@line, $blankline[$#blankline], 1);
		    splice (@blankline, $#blankline, 1);
		    $joined++; # for line number reporting

		    # Make all the others blank again.
		    foreach $l (@blankline) { $line[$l] = ""; }

		    $i = $chunk_start - 2;
		    $state = 2;
		    print STDERR "# Reset to $i\n" if $debug;
		    # Re-read this hunk from the beginning again.
		    next;
		}

		print STDERR "unwrapdiff: patch may be damaged near line "
		    . ($i + $joined) . ".\n";
		$hazard = 1;
	    }
	    # Check to see if the last line of this hunk seems to
	    # be wrapped or not.  If this is the last line, or the
	    # next line starts with '--- ' or 'diff ' or 'Index: '
	    # then it's probably not wrapped.  Otherwise it might
	    # well be.
	    else {
		unless ($i == $#line ||
			$line[$i + 1] =~ /^@@/ ||
			$line[$i + 1] =~ /^--- / ||
			$line[$i + 1] =~ /^diff / ||
			$line[$i + 1] =~ /^Index: /) {
		    chomp($line[$i]);
		    print STDERR "Constructed line $i from:\n" .
			"$line[$i]\n$line[$i + 1]"
			if $debug || $verbose;

		    # Decide whether there was a space in the line
		    # before it was wrapped.  We have to use
		    # heuristics for this.
		    $space = " ";
		    $_ = $line[$i];
		    if (/\*\*\*\*\*$/) {
			$space = "";
		    }

		    $line[$i] .= $space . $line[$i + 1];
		    splice (@line, $i + 1, 1);
		    $joined++;

		    print STDERR "to make:\n$line[$i]" if $debug || $verbose;

		    # But only handle one line of wrapped text in this case.
		}
	    }

	    $state = 2;
	    @blankline = ();
	}
    }
}

if ($orig != 0 || $new != 0) {
    print STDERR "unwrapdiff: patch may be damaged.\n";
    $hazard = 1;
}

print @line;
exit ($hazard);