diff options
| -rw-r--r-- | diff.c | 2 | ||||
| -rwxr-xr-x | t/t3419-rebase-patch-id.sh | 109 | ||||
| -rw-r--r-- | xdiff/xemit.c | 38 |
3 files changed, 124 insertions, 25 deletions
@@ -3894,7 +3894,7 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1) xpp.flags = 0; xecfg.ctxlen = 3; - xecfg.flags = XDL_EMIT_FUNCNAMES; + xecfg.flags = 0; xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data, &xpp, &xecfg); } diff --git a/t/t3419-rebase-patch-id.sh b/t/t3419-rebase-patch-id.sh new file mode 100755 index 0000000000..1aee483510 --- /dev/null +++ b/t/t3419-rebase-patch-id.sh @@ -0,0 +1,109 @@ +#!/bin/bash + +test_description='git rebase - test patch id computation' + +. ./test-lib.sh + +test_set_prereq NOT_EXPENSIVE +test -n "$GIT_PATCHID_TIMING_TESTS" && test_set_prereq EXPENSIVE +test -x /usr/bin/time && test_set_prereq USR_BIN_TIME + +count() +{ + i=0 + while test $i -lt $1 + do + echo "$i" + i=$(($i+1)) + done +} + +scramble() +{ + i=0 + while read x + do + if test $i -ne 0 + then + echo "$x" + fi + i=$(((i+1) % 10)) + done < "$1" > "$1.new" + mv -f "$1.new" "$1" +} + +run() +{ + echo \$ "$@" + /usr/bin/time "$@" >/dev/null +} + +test_expect_success 'setup' ' + git commit --allow-empty -m initial + git tag root +' + +do_tests() +{ + pr=$1 + nlines=$2 + + test_expect_success $pr "setup: $nlines lines" " + rm -f .gitattributes && + git checkout -q -f master && + git reset --hard root && + count $nlines >file && + git add file && + git commit -q -m initial && + git branch -f other && + + scramble file && + git add file && + git commit -q -m 'change big file' && + + git checkout -q other && + : >newfile && + git add newfile && + git commit -q -m 'add small file' && + + git cherry-pick master >/dev/null 2>&1 + " + + test_debug " + run git diff master^\! + " + + test_expect_success $pr 'setup attributes' " + echo 'file binary' >.gitattributes + " + + test_debug " + run git format-patch --stdout master && + run git format-patch --stdout --ignore-if-in-upstream master + " + + test_expect_success $pr 'detect upstream patch' " + git checkout -q master && + scramble file && + git add file && + git commit -q -m 'change big file again' && + git checkout -q other^{} && + git rebase master && + test_must_fail test -n \"\$(git rev-list master...HEAD~)\" + " + + test_expect_success $pr 'do not drop patch' " + git branch -f squashed master && + git checkout -q -f squashed && + git reset -q --soft HEAD~2 && + git commit -q -m squashed && + git checkout -q other^{} && + test_must_fail git rebase squashed && + rm -rf .git/rebase-apply + " +} + +do_tests NOT_EXPENSIVE 500 +do_tests EXPENSIVE 50000 + +test_done diff --git a/xdiff/xemit.c b/xdiff/xemit.c index c4bedf0d1c..277e2eec5b 100644 --- a/xdiff/xemit.c +++ b/xdiff/xemit.c @@ -85,27 +85,6 @@ static long def_ff(const char *rec, long len, char *buf, long sz, void *priv) return -1; } -static void xdl_find_func(xdfile_t *xf, long i, char *buf, long sz, long *ll, - find_func_t ff, void *ff_priv) { - - /* - * Be quite stupid about this for now. Find a line in the old file - * before the start of the hunk (and context) which starts with a - * plausible character. - */ - - const char *rec; - long len; - - while (i-- > 0) { - len = xdl_get_rec(xf, i, &rec); - if ((*ll = ff(rec, len, buf, sz, ff_priv)) >= 0) - return; - } - *ll = 0; -} - - static int xdl_emit_common(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb, xdemitconf_t const *xecfg) { xdfile_t *xdf = &xe->xdf1; @@ -127,6 +106,7 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb, xdchange_t *xch, *xche; char funcbuf[80]; long funclen = 0; + long funclineprev = -1; find_func_t ff = xecfg->find_func ? xecfg->find_func : def_ff; if (xecfg->flags & XDL_EMIT_COMMON) @@ -150,9 +130,19 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb, */ if (xecfg->flags & XDL_EMIT_FUNCNAMES) { - xdl_find_func(&xe->xdf1, s1, funcbuf, - sizeof(funcbuf), &funclen, - ff, xecfg->find_func_priv); + long l; + for (l = s1 - 1; l >= 0 && l > funclineprev; l--) { + const char *rec; + long reclen = xdl_get_rec(&xe->xdf1, l, &rec); + long newfunclen = ff(rec, reclen, funcbuf, + sizeof(funcbuf), + xecfg->find_func_priv); + if (newfunclen >= 0) { + funclen = newfunclen; + break; + } + } + funclineprev = s1 - 1; } if (xdl_emit_hunk_hdr(s1 + 1, e1 - s1, s2 + 1, e2 - s2, funcbuf, funclen, ecb) < 0) |