diff options
| -rw-r--r-- | diff.c | 8 | ||||
| -rwxr-xr-x | t/t4020-diff-external.sh | 59 |
2 files changed, 64 insertions, 3 deletions
@@ -2992,9 +2992,8 @@ static void run_diff_cmd(const char *pgm, int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score; int must_show_header = 0; - if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL)) - pgm = NULL; - else { + + if (DIFF_OPT_TST(o, ALLOW_EXTERNAL)) { struct userdiff_driver *drv = userdiff_find_by_path(attr_path); if (drv && drv->external) pgm = drv->external; @@ -3074,6 +3073,9 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o) if (o->prefix_length) strip_prefix(o->prefix_length, &name, &other); + if (!DIFF_OPT_TST(o, ALLOW_EXTERNAL)) + pgm = NULL; + if (DIFF_PAIR_UNMERGED(p)) { run_diff_cmd(pgm, name, NULL, attr_path, NULL, NULL, NULL, o, p); diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh index 533afc118..2e7d73f09 100755 --- a/t/t4020-diff-external.sh +++ b/t/t4020-diff-external.sh @@ -48,7 +48,53 @@ test_expect_success 'GIT_EXTERNAL_DIFF environment and --no-ext-diff' ' ' +test_expect_success SYMLINKS 'typechange diff' ' + rm -f file && + ln -s elif file && + GIT_EXTERNAL_DIFF=echo git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$_z40" && + test "z$newmode" = z120000 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } && + GIT_EXTERNAL_DIFF=echo git diff --no-ext-diff >actual && + git diff >expect && + test_cmp expect actual +' + +test_expect_success 'diff.external' ' + git reset --hard && + echo third >file && + test_config diff.external echo && + git diff | { + read path oldfile oldhex oldmode newfile newhex newmode && + test "z$path" = zfile && + test "z$oldmode" = z100644 && + test "z$newhex" = "z$_z40" && + test "z$newmode" = z100644 && + oh=$(git rev-parse --verify HEAD:file) && + test "z$oh" = "z$oldhex" + } +' + +test_expect_success 'diff.external should apply only to diff' ' + test_config diff.external echo && + git log -p -1 HEAD | + grep "^diff --git a/file b/file" +' + +test_expect_success 'diff.external and --no-ext-diff' ' + test_config diff.external echo && + git diff --no-ext-diff | + grep "^diff --git a/file b/file" +' + test_expect_success 'diff attribute' ' + git reset --hard && + echo third >file && git config diff.parrot.command echo && @@ -113,6 +159,19 @@ test_expect_success 'diff attribute and --no-ext-diff' ' ' +test_expect_success 'GIT_EXTERNAL_DIFF trumps diff.external' ' + >.gitattributes && + test_config diff.external "echo ext-global" && + GIT_EXTERNAL_DIFF="echo ext-env" git diff | grep ext-env +' + +test_expect_success 'attributes trump GIT_EXTERNAL_DIFF and diff.external' ' + test_config diff.foo.command "echo ext-attribute" && + test_config diff.external "echo ext-global" && + echo "file diff=foo" >.gitattributes && + GIT_EXTERNAL_DIFF="echo ext-env" git diff | grep ext-attribute +' + test_expect_success 'no diff with -diff' ' echo >.gitattributes "file -diff" && git diff | grep Binary |