We run `git rev-parse` though the shell, and quote its
argument only with single-quotes. This prevents most
metacharacters from being a problem, but misses the obvious
case when $name itself has single-quotes in it. We can fix
this by applying the usual shell-quoting formula.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
sub get_headref ($) {
my $name = shift;
+ $name =~ s/'/'\\''/;
my $r = `git rev-parse --verify '$name' 2>/dev/null`;
return undef unless $? == 0;
chomp $r;