diff options
| -rw-r--r-- | diff-lib.c | 6 | ||||
| -rwxr-xr-x | t/t4039-diff-assume-unchanged.sh | 31 |
2 files changed, 35 insertions, 2 deletions
diff --git a/diff-lib.c b/diff-lib.c index ad2a4cde74..22da66ef14 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -162,7 +162,8 @@ int run_diff_files(struct rev_info *revs, unsigned int option) if (ce_uptodate(ce)) continue; - changed = check_removed(ce, &st); + /* If CE_VALID is set, don't look at workdir for file removal */ + changed = (ce->ce_flags & CE_VALID) ? 0 : check_removed(ce, &st); if (changed) { if (changed < 0) { perror(ce->name); @@ -337,6 +338,8 @@ static void do_oneway_diff(struct unpack_trees_options *o, struct rev_info *revs = o->unpack_data; int match_missing, cached; + /* if the entry is not checked out, don't examine work tree */ + cached = o->index_only || (idx && (idx->ce_flags & CE_VALID)); /* * Backward compatibility wart - "diff-index -m" does * not mean "do not ignore merges", but "match_missing". @@ -344,7 +347,6 @@ static void do_oneway_diff(struct unpack_trees_options *o, * But with the revision flag parsing, that's found in * "!revs->ignore_merges". */ - cached = o->index_only; match_missing = !revs->ignore_merges; if (cached && idx && ce_stage(idx)) { diff --git a/t/t4039-diff-assume-unchanged.sh b/t/t4039-diff-assume-unchanged.sh new file mode 100755 index 0000000000..9d9498bd95 --- /dev/null +++ b/t/t4039-diff-assume-unchanged.sh @@ -0,0 +1,31 @@ +#!/bin/sh + +test_description='diff with assume-unchanged entries' + +. ./test-lib.sh + +# external diff has been tested in t4020-diff-external.sh + +test_expect_success 'setup' ' + echo zero > zero && + git add zero && + git commit -m zero && + echo one > one && + echo two > two && + git add one two && + git commit -m onetwo && + git update-index --assume-unchanged one && + echo borked >> one && + test "$(git ls-files -v one)" = "h one" +' + +test_expect_success 'diff-index does not examine assume-unchanged entries' ' + git diff-index HEAD^ -- one | grep -q 5626abf0f72e58d7a153368ba57db4c673c0e171 +' + +test_expect_success 'diff-files does not examine assume-unchanged entries' ' + rm one && + test -z "$(git diff-files -- one)" +' + +test_done |