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authorKyle Meyer <kyle@kyleam.com>2021-05-21 00:38:16 -0400
committerEric Wong <e@80x24.org>2021-05-21 09:44:33 +0000
commit3c1d0da4d0608b5a87371e602a911964d7c1498c (patch)
tree69d3fcc1143dbefa58b9d9b9896c897590914e62 /lib/PublicInbox/LeiRediff.pm
parent2f720902ed702b64d918165ba21a96dabbeeca26 (diff)
downloadpublic-inbox-3c1d0da4d0608b5a87371e602a911964d7c1498c.tar.gz
When generating git-diff options, lei-rediff extracts the single
character option from the lei option spec.  However, there's no check
that the regular expression actually matches, leading to an
unintentional git-diff option when there isn't a short option (e.g.,
--inter-hunk-context=1 maps to the invalid `git diff --color -w1').

Check for a match before trying to extract the single character
option.

Fixes: cf0c7ce3ce81b5c3 (lei rediff: regenerate diffs from stdin)
Diffstat (limited to 'lib/PublicInbox/LeiRediff.pm')
-rw-r--r--lib/PublicInbox/LeiRediff.pm5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/PublicInbox/LeiRediff.pm b/lib/PublicInbox/LeiRediff.pm
index 3c8ebe41..2e793df5 100644
--- a/lib/PublicInbox/LeiRediff.pm
+++ b/lib/PublicInbox/LeiRediff.pm
@@ -108,8 +108,9 @@ EOM
         push @cmd, '--'.($opt->{color} && !$opt->{'no-color'} ? '' : 'no-').
                         'color';
         for my $o (@PublicInbox::LEI::diff_opt) {
-                $o =~ s/\|([a-z0-9])\b//i; # remove single char short option
-                my $c = $1;
+                my $c = '';
+                # remove single char short option
+                $o =~ s/\|([a-z0-9])\b//i and $c = $1;
                 if ($o =~ s/=[is]@\z//) {
                         my $v = $opt->{$o} or next;
                         push @cmd, map { $c ? "-$c$_" : "--$o=$_" } @$v;