Git.pm: Handle failed commands' output

diff --git a/git-mv.perl b/git-mv.perl
index 8cd95c472ffb7b86fcd1faa0c7b8d365029b9597..75aa8feeb6201c54e55bfaca0cc178c53891e776 100755 (executable)
--- a/git-mv.perl
+++ b/git-mv.perl
@@ -31,13 +31,14 @@ ()
 my (@srcArgs, @dstArgs, @srcs, @dsts);
 my ($src, $dst, $base, $dstDir);
 
+# remove any trailing slash in arguments
+for (@ARGV) { s/\/*$//; }
+
 my $argCount = scalar @ARGV;
 if (-d $ARGV[$argCount-1]) {
        $dstDir = $ARGV[$argCount-1];
-       # remove any trailing slash
-       $dstDir =~ s/\/$//;
        @srcArgs = @ARGV[0..$argCount-2];
-       
+
        foreach $src (@srcArgs) {
                $base = $src;
                $base =~ s/^.*\///;
@@ -61,6 +62,24 @@ ()
     $dstDir = "";
 }
 
+my $subdir_prefix = `git rev-parse --show-prefix`;
+chomp($subdir_prefix);
+
+# run in git base directory, so that git-ls-files lists all revisioned files
+chdir "$GIT_DIR/..";
+
+# normalize paths, needed to compare against versioned files and update-index
+# also, this is nicer to end-users by doing ".//a/./b/.//./c" ==> "a/b/c"
+for (@srcArgs, @dstArgs) {
+    # prepend git prefix as we run from base directory
+    $_ = $subdir_prefix.$_;
+    s|^\./||;
+    s|/\./|/| while (m|/\./|);
+    s|//+|/|g;
+    # Also "a/b/../c" ==> "a/c"
+    1 while (s,(^|/)[^/]+/\.\./,$1,);
+}
+
 my (@allfiles,@srcfiles,@dstfiles);
 my $safesrc;
 my (%overwritten, %srcForDst);