git-p4: Unset P4DIFF environment variable when using 'p4 -du diff'

diff --git a/git-cvsexportcommit.perl b/git-cvsexportcommit.perl
index 9d142d08a5f59f15857453596d43ab9d8f987a25..b6036bd4d305215b4a70b6fd0fe54d7607dbe068 100755 (executable)
--- a/git-cvsexportcommit.perl
+++ b/git-cvsexportcommit.perl
@@ -5,6 +5,7 @@
 use File::Temp qw(tempdir);
 use Data::Dumper;
 use File::Basename qw(basename dirname);
+use File::Spec;
 
 our ($opt_h, $opt_P, $opt_p, $opt_v, $opt_c, $opt_f, $opt_a, $opt_m, $opt_d, $opt_u, $opt_w);
 
@@ -15,17 +16,15 @@
 die "Need at least one commit identifier!" unless @ARGV;
 
 if ($opt_w) {
+       # Remember where GIT_DIR is before changing to CVS checkout
        unless ($ENV{GIT_DIR}) {
-               # Remember where our GIT_DIR is before changing to CVS checkout
+               # No GIT_DIR set. Figure it out for ourselves
                my $gd =`git-rev-parse --git-dir`;
                chomp($gd);
-               if ($gd eq '.git') {
-                       my $wd = `pwd`;
-                       chomp($wd);
-                       $gd = $wd."/.git"       ;
-               }
                $ENV{GIT_DIR} = $gd;
        }
+       # Make sure GIT_DIR is absolute
+       $ENV{GIT_DIR} = File::Spec->rel2abs($ENV{GIT_DIR});
 
        if (! -d $opt_w."/CVS" ) {
                die "$opt_w is not a CVS checkout";