Mercurial > hg
comparison mercurial/tags.py @ 16730:dd4ce44ff53c
tags: short-circuit if no tags have ever been committed
| author | Bryan O'Sullivan <bryano@fb.com> |
|---|---|
| date | Sun, 13 May 2012 12:01:52 +0200 |
| parents | fe9a53726484 |
| children | 707cbbf950ea |
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| 16729:46c15dff3497 | 16730:dd4ce44ff53c |
|---|---|
| 226 | 226 |
| 227 # As it happens, the code to handle cases 3, 4, 5 is the same. | 227 # As it happens, the code to handle cases 3, 4, 5 is the same. |
| 228 | 228 |
| 229 # N.B. in case 4 (nodes destroyed), "new head" really means "newly | 229 # N.B. in case 4 (nodes destroyed), "new head" really means "newly |
| 230 # exposed". | 230 # exposed". |
| 231 if not len(repo.file('.hgtags')): | |
| 232 # No tags have ever been committed, so we can avoid a | |
| 233 # potentially expensive search. | |
| 234 return (repoheads, cachefnode, None, True) | |
| 235 | |
| 231 newheads = [head | 236 newheads = [head |
| 232 for head in repoheads | 237 for head in repoheads |
| 233 if head not in set(cacheheads)] | 238 if head not in set(cacheheads)] |
| 234 | 239 |
| 235 # Now we have to lookup the .hgtags filenode for every new head. | 240 # Now we have to lookup the .hgtags filenode for every new head. |