git-cvsexportcommit: Fix calling Perl's rel2abs() on MSYS

Due to MSYS path mangling GIT_DIR contains a Windows-style path when
checked inside a Perl script even if GIT_DIR was previously set to an
MSYS-style path in a shell script. So explicitly convert to an MSYS-style
path before calling Perl's rel2abs() to make it work.

This fix was inspired by a very similar patch in WebKit:

http://trac.webkit.org/changeset/76255/trunk/Tools/Scripts/commit-log-editor

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Tested-by: Pat Thoyts <patthoyts@users.sourceforge.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 39a426e067c76e01d3f2a0d63243ec494436da46..e6bf25232c4ec27fc98f78e076678ae4d0a524c1 100755 (executable)
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -30,6 +30,13 @@ if ($opt_w || $opt_W) {
                chomp($gd);
                $ENV{GIT_DIR} = $gd;
        }
+
+       # On MSYS, convert a Windows-style path to an MSYS-style path
+       # so that rel2abs() below works correctly.
+       if ($^O eq 'msys') {
+               $ENV{GIT_DIR} =~ s#^([[:alpha:]]):/#/$1/#;
+       }
+
        # Make sure GIT_DIR is absolute
        $ENV{GIT_DIR} = File::Spec->rel2abs($ENV{GIT_DIR});
 }