This file is indexed.

/usr/share/gap/pkg/ctbllib/gap4/brctdiff.g is in gap-character-tables 1r2p2.dfsg.0-3.

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

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
#############################################################################
##
#W  brctdiff.g           GAP 4 package CTblLib                  Thomas Breuer
##
#Y  Copyright (C)  2012,   Lehrstuhl D für Mathematik,  RWTH Aachen,  Germany
##


#############################################################################
##
#F  BrowseCTblLibDifferences()
##
##  <#GAPDoc Label="BrowseCTblLibDifferences">
##  <ManSection>
##  <Func Name="BrowseCTblLibDifferences" Arg=''/>
##
##  <Returns>
##  nothing.
##  </Returns>
##
##  <Description>
##  <Ref Func="BrowseCTblLibDifferences"/> lists the differences of the
##  character table data between version 1.1.3 and version 1.2 of the
##  <Package>CTblLib</Package> package.
##  <P/>
##  The overview table contains one row for each change,
##  where <Q>change</Q> means the addition, modification, or removal of
##  information,
##  and has the following columns.
##  <P/>
##  <List>
##  <Mark><C>Identifier</C></Mark>
##  <Item>
##    the
##    <Ref Func="Identifier" Label="for character tables" BookName="ref"/>
##    value of the character table,
##  </Item>
##  <Mark><C>Type</C></Mark>
##  <Item>
##    one of
##    <C>NEW</C> (for the addition of previously not available information),
##    <C>***</C> (for a bugfix), or
##    <C>C</C> (for a change that does not really fix a bug,
##    typically a change motivated by a new consistency criterion),
##  </Item>
##  <Mark><C>What</C></Mark>
##  <Item>
##    one of
##    <C>class fusions</C> (some class fusions from or to the
##    table in question were changed),
##    <C>maxes</C> (the value of the attribute <Ref Attr="Maxes"/>
##    was changed),
##    <C>names</C> (incorrect admissible names were removed),
##    <C>table</C> or <C>table mod </C><M>p</M> (the ordinary or
##    <M>p</M>-modular character table was changed),
##    <C>maxes</C> (the value of the attribute <Ref Attr="Maxes"/>
##    was changed),
##    <C>tom fusion</C> (the value of the attribute <Ref Attr="FusionToTom"/>
##    was changed),
##  </Item>
##  <Mark><C>Description</C></Mark>
##  <Item>
##    a description what has been changed,
##  </Item>
##  <Mark><C>Flag</C></Mark>
##  <Item>
##    one of
##    <C>Dup</C> (the table is a duplicate, in the sense of
##    <Ref Prop="IsDuplicateTable"/>),
##    <C>Der</C> (the row belongs to a character table that is derived from
##    other tables),
##    <C>Fus</C> (the row belongs to the addition of class fusions),
##    <C>Max</C> (the row belongs to a character table that was added
##    because its group is maximal in another group), or
##    <C>None</C> (in all other cases &ndash;these rows are to some extent
##    the interesting ones).
##    The information in this column can be used to restrict the overview
##    to interesting subsets.
##  </Item>
##  </List>
##  <P/>
##  The full functionality of the function
##  <Ref Func="NCurses.BrowseGeneric" BookName="Browse"/> is available.
##  <P/>
##  The following examples show the input for
##  <P/>
##  <List>
##  <Item>
##    restricting the overview to error rows,
##  </Item>
##  <Item>
##    restricting the overview to <Q>None</Q> rows, and
##  </Item>
##  <Item>
##    restricting the overview to rows about a particular table.
##  </Item>
##  </List>
##  <P/>
##  <Example><![CDATA[
##  gap> n:= [ 14, 14, 14, 14, 14, 14 ];;  # ``do nothing''
##  gap> enter:= [ NCurses.keys.ENTER ];;
##  gap> down:= [ NCurses.keys.DOWN ];;
##  gap> right:= [ NCurses.keys.RIGHT ];;
##  gap> BrowseData.SetReplay( Concatenation(
##  >        "scr",                    # select the 'Type' column,
##  >        "f***", enter,            # filter rows containing '***',
##  >        n, "Q" ) );               # and quit
##  gap> BrowseCTblLibDifferences();
##  gap> BrowseData.SetReplay( Concatenation(
##  >        "scrrrr",                 # select the 'Flag' column,
##  >        "fNone", enter,           # filter rows containing 'None',
##  >        n, "Q" ) );               # and quit
##  gap> BrowseCTblLibDifferences();
##  gap> BrowseData.SetReplay( Concatenation(
##  >        "fM",                     # filter rows containing 'M',
##  >        down, down, down, right,  # but 'M' as a whole word,
##  >        enter,                    #
##  >        n, "Q" ) );               # and quit
##  gap> BrowseCTblLibDifferences();
##  gap> BrowseData.SetReplay( false );
##  ]]></Example>
##  </Description>
##  </ManSection>
##  <#/GAPDoc>
##
BindGlobal( "BrowseCTblLibDifferences", function()
    local namewidth, whatwidth, descrwidth, matrix, t, i;

    if not IsBound( CTblLib.DiffInfo ) then
      ReadPackage( "ctbllib", "data/ctbldiff.dat" );
    fi;

    namewidth:= Maximum( List( CTblLib.DiffInfo, l -> Length( l[1] ) ) );
    whatwidth:= Maximum( List( CTblLib.DiffInfo, l -> Length( l[3] ) ) );
    descrwidth:= SizeScreen()[1] - namewidth - whatwidth - 9;
    matrix:= List( CTblLib.DiffInfo, entry ->
      [ rec( align:= "tl", rows:= [ entry[1] ] ),
        rec( align:= "tl", rows:= [ entry[2] ] ),
        rec( align:= "tl", rows:= [ entry[3] ] ),
        rec( align:= "tl", rows:= SplitString(
                             BrowseData.ReallyFormatParagraph( entry[4],
                               descrwidth, "left" ), "\n" ) ),
        rec( align:= "tl", rows:= [ entry[5] ] ) ] );

    # Construct the browse table.
    t:= rec(
      work:= rec(
        align:= "tl",
        header:= t -> BrowseData.HeaderWithRowCounter( t,
                   "Changes of CTblLib Data since version 1.1.3",
                   Length( matrix ) ),
        main:= matrix,
        labelsCol:= [ [ rec( rows:= [ "Identifier" ], align:= "l" ),
                        rec( rows:= [ "Type" ], align:= "l" ),
                        rec( rows:= [ "What" ], align:= "l" ),
                        rec( rows:= [ "Description" ], align:= "l" ),
                        rec( rows:= [ "Flag" ], align:= "l" ) ] ],
        sepLabelsCol:= "=",
        sepRow:= "-",
        sepCol:= [ "|" ],
        widthCol:= [ , namewidth,, 4,, whatwidth,, descrwidth,, 5 ],
        SpecialGrid:= BrowseData.SpecialGridLineDraw,
      ),
      dynamic:= rec(
        sortFunctionsForColumns:= [ ,,
          function( val1, val2 )
            if val1[1] <> val1[2] then
              return val1 < val2;
            else
              return BrowseData.CompareLenLex( val1, val2 );
            fi;
          end ],
      ),
    );

    # Customize the sort parameters.
    for i in [ 1, 2, 3, 5 ] do
      BrowseData.SetSortParameters( t, "column", i,
          [ "add counter on categorizing", "yes" ] );
    od;

    # Show the browse table.
    NCurses.BrowseGeneric( t );
end );


#############################################################################
##
##  Add the Browse application to the list shown by `BrowseGapData'.
##
BrowseGapDataAdd( "Differences in GAP's Library of Character Tables",
    BrowseCTblLibDifferences, false, "\
an overview of the differences beteen the versions 1.1.3 and 1.2 of \
GAP's library of character tables, \
" );


#############################################################################
##
#E