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f12c66b9bb
The userdiff funcname mechanism has no concept of nested scopes ---
instead, "git diff" and "git grep --show-function" simply label the
diff header with the most recent matching line. Unfortunately that
means text following a subroutine in a POD section:
=head1 DESCRIPTION
You might use this facility like so:
sub example {
foo;
}
Now, having said that, let's say more about the facility.
Blah blah blah ... etc etc.
gets the subroutine name instead of the POD header in its diff/grep
funcname header, making it harder to get oriented when reading a
diff without enough context.
The fix is simple: anchor the funcname syntax to the left margin so
nested subroutines and packages like this won't get picked up. (The
builtin C++ funcname pattern already does the same thing.) This means
the userdiff driver will misparse the idiom
{
my $static;
sub foo {
... use $static ...
}
}
but I think that's worth it; we can revisit this later if the userdiff
mechanism learns to keep track of the beginning and end of nested
scopes.
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
153 lines
3.3 KiB
Bash
Executable file
153 lines
3.3 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2007 Johannes E. Schindelin
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#
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test_description='Test custom diff function name patterns'
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. ./test-lib.sh
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LF='
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'
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cat >Beer.java <<\EOF
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public class Beer
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{
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int special;
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public static void main(String args[])
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{
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String s=" ";
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for(int x = 99; x > 0; x--)
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{
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System.out.print(x + " bottles of beer on the wall "
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+ x + " bottles of beer\n"
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+ "Take one down, pass it around, " + (x - 1)
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+ " bottles of beer on the wall.\n");
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}
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System.out.print("Go to the store, buy some more,\n"
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+ "99 bottles of beer on the wall.\n");
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}
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}
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EOF
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sed 's/beer\\/beer,\\/' <Beer.java >Beer-correct.java
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cat >Beer.perl <<\EOF
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package Beer;
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use strict;
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use warnings;
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use parent qw(Exporter);
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our @EXPORT_OK = qw(round);
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sub round {
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my ($n) = @_;
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print "$n bottles of beer on the wall ";
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print "$n bottles of beer\n";
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print "Take one down, pass it around, ";
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$n = $n - 1;
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print "$n bottles of beer on the wall.\n";
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}
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__END__
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=head1 NAME
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Beer - subroutine to output fragment of a drinking song
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=head1 SYNOPSIS
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use Beer qw(round);
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sub song {
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for (my $i = 99; $i > 0; $i--) {
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round $i;
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}
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}
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song;
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=cut
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EOF
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sed -e '
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s/beer\\/beer,\\/
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s/song;/song();/
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' <Beer.perl >Beer-correct.perl
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test_config () {
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git config "$1" "$2" &&
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test_when_finished "git config --unset $1"
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}
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test_expect_funcname () {
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lang=${2-java}
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test_expect_code 1 git diff --no-index -U1 \
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"Beer.$lang" "Beer-correct.$lang" >diff &&
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grep "^@@.*@@ $1" diff
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}
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for p in bibtex cpp csharp fortran html java objc pascal perl php python ruby tex
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do
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test_expect_success "builtin $p pattern compiles" '
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echo "*.java diff=$p" >.gitattributes &&
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test_expect_code 1 git diff --no-index \
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Beer.java Beer-correct.java 2>msg &&
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! grep fatal msg &&
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! grep error msg
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'
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test_expect_success "builtin $p wordRegex pattern compiles" '
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echo "*.java diff=$p" >.gitattributes &&
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test_expect_code 1 git diff --no-index --word-diff \
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Beer.java Beer-correct.java 2>msg &&
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! grep fatal msg &&
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! grep error msg
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'
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done
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test_expect_success 'default behaviour' '
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rm -f .gitattributes &&
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test_expect_funcname "public class Beer\$"
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'
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test_expect_success 'set up .gitattributes declaring drivers to test' '
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cat >.gitattributes <<-\EOF
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*.java diff=java
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*.perl diff=perl
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EOF
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'
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test_expect_success 'preset java pattern' '
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test_expect_funcname "public static void main("
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'
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test_expect_success 'preset perl pattern' '
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test_expect_funcname "sub round {\$" perl
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'
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test_expect_success 'perl pattern is not distracted by sub within POD' '
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test_expect_funcname "=head" perl
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'
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test_expect_success 'custom pattern' '
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test_config diff.java.funcname "!static
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!String
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[^ ].*s.*" &&
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test_expect_funcname "int special;\$"
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'
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test_expect_success 'last regexp must not be negated' '
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test_config diff.java.funcname "!static" &&
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test_expect_code 128 git diff --no-index Beer.java Beer-correct.java 2>msg &&
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grep ": Last expression must not be negated:" msg
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'
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test_expect_success 'pattern which matches to end of line' '
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test_config diff.java.funcname "Beer\$" &&
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test_expect_funcname "Beer\$"
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'
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test_expect_success 'alternation in pattern' '
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test_config diff.java.funcname "Beer$" &&
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test_config diff.java.xfuncname "^[ ]*((public|static).*)$" &&
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test_expect_funcname "public static void main("
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'
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test_done
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