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nmbug: Handle missing @upstream in is_unmerged

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If we don't have an upstream, there is nothing to merge, so nothing is
unmerged.  This avoids errors like:

  $ nmbug status
  error: No upstream configured for branch 'master'
  error: No upstream configured for branch 'master'
  fatal: ambiguous argument '@{upstream}': unknown revision or path not in the working tree.
  Use '--' to separate paths from revisions, like this:
  'git <command> [<revision>...] -- [<file>...]'
  'git rev-parse @{upstream}' exited with nonzero value

You might not have an upstream if you're only using nmbug locally to
version-control your tags.
This commit is contained in:
W. Trevor King 2014-07-06 13:40:20 -07:00 committed by David Bremner
parent c2bbe9eb6c
commit 567aab405b
1 changed files with 4 additions and 1 deletions
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devel/nmbug/nmbug
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@ -430,7 +430,10 @@ sub do_status {
sub is_unmerged {
my $commit = shift || '@{upstream}';
my $fetch_head = git ('rev-parse', $commit);
my ($fetch_head, $status) = git_with_status ('rev-parse', $commit);
if ($status) {
return 0;
}
my $base = git ( 'merge-base', 'HEAD', $commit);
return ($base ne $fetch_head);