diff options
| -rw-r--r-- | diff.c | 14 | ||||
| -rwxr-xr-x | t/t4001-diff-rename.sh | 54 |
2 files changed, 67 insertions, 1 deletions
@@ -1264,6 +1264,7 @@ static char *pprint_rename(const char *a, const char *b) const char *new = b; struct strbuf name = STRBUF_INIT; int pfx_length, sfx_length; + int pfx_adjust_for_slash; int len_a = strlen(a); int len_b = strlen(b); int a_midlen, b_midlen; @@ -1290,7 +1291,18 @@ static char *pprint_rename(const char *a, const char *b) old = a + len_a; new = b + len_b; sfx_length = 0; - while (a <= old && b <= new && *old == *new) { + /* + * If there is a common prefix, it must end in a slash. In + * that case we let this loop run 1 into the prefix to see the + * same slash. + * + * If there is no common prefix, we cannot do this as it would + * underrun the input strings. + */ + pfx_adjust_for_slash = (pfx_length ? 1 : 0); + while (a + pfx_length - pfx_adjust_for_slash <= old && + b + pfx_length - pfx_adjust_for_slash <= new && + *old == *new) { if (*old == '/') sfx_length = len_a - (old - a); old--; diff --git a/t/t4001-diff-rename.sh b/t/t4001-diff-rename.sh index 844277cfa6..2f327b7495 100755 --- a/t/t4001-diff-rename.sh +++ b/t/t4001-diff-rename.sh @@ -102,4 +102,58 @@ test_expect_success 'setup for many rename source candidates' ' grep warning actual.err ' +test_expect_success 'rename pretty print with nothing in common' ' + mkdir -p a/b/ && + : >a/b/c && + git add a/b/c && + git commit -m "create a/b/c" && + mkdir -p c/b/ && + git mv a/b/c c/b/a && + git commit -m "a/b/c -> c/b/a" && + git diff -M --summary HEAD^ HEAD >output && + test_i18ngrep " a/b/c => c/b/a " output && + git diff -M --stat HEAD^ HEAD >output && + test_i18ngrep " a/b/c => c/b/a " output +' + +test_expect_success 'rename pretty print with common prefix' ' + mkdir -p c/d && + git mv c/b/a c/d/e && + git commit -m "c/b/a -> c/d/e" && + git diff -M --summary HEAD^ HEAD >output && + test_i18ngrep " c/{b/a => d/e} " output && + git diff -M --stat HEAD^ HEAD >output && + test_i18ngrep " c/{b/a => d/e} " output +' + +test_expect_success 'rename pretty print with common suffix' ' + mkdir d && + git mv c/d/e d/e && + git commit -m "c/d/e -> d/e" && + git diff -M --summary HEAD^ HEAD >output && + test_i18ngrep " {c/d => d}/e " output && + git diff -M --stat HEAD^ HEAD >output && + test_i18ngrep " {c/d => d}/e " output +' + +test_expect_success 'rename pretty print with common prefix and suffix' ' + mkdir d/f && + git mv d/e d/f/e && + git commit -m "d/e -> d/f/e" && + git diff -M --summary HEAD^ HEAD >output && + test_i18ngrep " d/{ => f}/e " output && + git diff -M --stat HEAD^ HEAD >output && + test_i18ngrep " d/{ => f}/e " output +' + +test_expect_success 'rename pretty print common prefix and suffix overlap' ' + mkdir d/f/f && + git mv d/f/e d/f/f/e && + git commit -m "d/f/e d/f/f/e" && + git diff -M --summary HEAD^ HEAD >output && + test_i18ngrep " d/f/{ => f}/e " output && + git diff -M --stat HEAD^ HEAD >output && + test_i18ngrep " d/f/{ => f}/e " output +' + test_done |