t9300: factor out portable "head -c" replacement

diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 73d367cea8f130bc7721803e397df710e7cfff58..1e4e65a45d16cfcc5a36e6855216e9be8fe0e0b4 100755 (executable)
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -921,7 +921,7 @@ sub commit {
                # (See check_refname_component in refs.c.)
                1 while $xtag =~ s/
                        (?: \.\.        # Tag cannot contain '..'.
-                       |   \@{         # Tag cannot contain '@{'.
+                       |   \@\{        # Tag cannot contain '@{'.
                        | ^ -           # Tag cannot begin with '-'.
                        |   \.lock $    # Tag cannot end with '.lock'.
                        | ^ \.          # Tag cannot begin...
@@ -1162,7 +1162,7 @@ sub commit {
                die "Fast-forward update failed: $?\n" if $?;
        }
        else {
-               system(qw(git merge cvsimport HEAD), "$remote/$opt_o");
+               system(qw(git merge -m cvsimport), "$remote/$opt_o");
                die "Could not merge $opt_o into the current branch.\n" if $?;
        }
 } else {