If git's index file is out of date, and some files have been touched such that their timestamp doesn't what is in the index, "git diff-index HEAD" may show that a particular file is dirty, when in fact it really isn't. Running "git update-index" will update the index to avoid these false positives.
Unified · Split
| @@ -16,6 +16,7 @@ if head=`git rev-parse --verify HEAD 2>/dev/null`; then · 15 unmodified lines | |||
| 16 | fi | 16 | fi |
| 17 | 17 | ||
| 18 | # Are there uncommitted changes? | 18 | # Are there uncommitted changes? |
| 19 | git update-index --refresh --unmerged > /dev/null | ||
| 19 | if git diff-index HEAD | read dummy; then | 20 | if git diff-index HEAD | read dummy; then |
| 20 | printf '%s' -dirty | 21 | printf '%s' -dirty |
| 21 | fi | 22 | fi |