nmbug: write tags out to a temporary file, not 'nmbug.index'

If more than nmbug process is running at once, then each will try to read and
write the same file.  Pending a proper fix upstream which ensures the
temporary file gets deleted even if we exit with an error.

Thanks to Kyle Meyer for input.

1 files changed, 1 insertions, 1 deletions

diff --git a/bin/nmbug b/bin/nmbug
index 043c1863..6580c31a 100755
--- a/bin/nmbug
+++ b/bin/nmbug
@@ -604,7 +604,7 @@ def get_status():
 
 def _index_tags():
     "Write notmuch tags to the nmbug.index."
-    path = _os.path.join(NMBGIT, 'nmbug.index')
+    (_, path) = _tempfile.mkstemp(dir=NMBGIT, prefix="nmbug", suffix=".index")
     query = ' '.join('tag:"{tag}"'.format(tag=tag) for tag in get_tags())
     prefix = '+{0}'.format(_ENCODED_TAG_PREFIX)
     _git(