On 31/03/18 13:50, Ævar Arnfjörð Bjarmason wrote:
Fix a regression in 88f6ffc1c2 ("add -p: only bind search key if
there's more than one hunk", 2018-02-13) which is present in
2.17.0-rc*, but not 2.16.0.
In Perl, regex variables like $1 always refer to the last regex
match. When the aforementioned change added a new regex match between
the old match and the corresponding code that was expecting $1, the $1
variable would always be undef, since the newly inserted regex match
doesn't have any captures.
As a result the "/" feature to search for a string in a hunk by regex
completely broke, on git.git:
Good catch, I could have sworn I'd tested my patch but I obviously
didn't notice the warning (I've got interactive.singlekey set so it
prints the warning and then prompts as it always has done). Calling it
completely broken is perhaps a little harsh as it does work if you enter
the regex again and with interactive.singlekey set you only have to
enter the regex once.
Thanks for fixing it
Phillip
$ perl -pi -e 's/Git/Tig/g' README.md
$ ./git --exec-path=$PWD add -p
[..]
Stage this hunk [y,n,q,a,d,j,J,g,/,s,e,?]? s
Split into 4 hunks.
[...]
Stage this hunk [y,n,q,a,d,j,J,g,/,s,e,?]? /Many
Use of uninitialized value $1 in string eq at /home/avar/g/git/git-add--interactive line 1568, <STDIN> line 1.
search for regex? Many
I.e. the initial "/regex" command wouldn't work, and would always emit
a warning and ask again for a regex, now it works as intended again.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
Of course I just noticed the grammar errors in the commit message
after sending. Here's a v2 with that fixed, also genreated the patch
with -U6 to make it clear what's going on.
git-add--interactive.perl | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index d190469cd8..c1f52e457f 100755
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -1561,13 +1561,13 @@ sub patch_update_file {
elsif ($line =~ m|^/(.*)|) {
my $regex = $1;
unless ($other =~ m|/|) {
error_msg __("No other hunks to search\n");
next;
}
- if ($1 eq "") {
+ if ($regex eq "") {
print colored $prompt_color, __("search for regex? ");
$regex = <STDIN>;
if (defined $regex) {
chomp $regex;
}
}
