diff options
| -rw-r--r-- | builtin/blame.c | 23 | ||||
| -rwxr-xr-x | t/t8011-blame-split-file.sh | 117 |
2 files changed, 131 insertions, 9 deletions
diff --git a/builtin/blame.c b/builtin/blame.c index 1fccbe6bff..d4f3ce96a5 100644 --- a/builtin/blame.c +++ b/builtin/blame.c @@ -1700,13 +1700,23 @@ static void get_commit_info(struct commit *commit, } /* + * Write out any suspect information which depends on the path. This must be + * handled separately from emit_one_suspect_detail(), because a given commit + * may have changes in multiple paths. So this needs to appear each time + * we mention a new group. + * * To allow LF and other nonportable characters in pathnames, * they are c-style quoted as needed. */ -static void write_filename_info(const char *path) +static void write_filename_info(struct origin *suspect) { + if (suspect->previous) { + struct origin *prev = suspect->previous; + printf("previous %s ", oid_to_hex(&prev->commit->object.oid)); + write_name_quoted(prev->path, stdout, '\n'); + } printf("filename "); - write_name_quoted(path, stdout, '\n'); + write_name_quoted(suspect->path, stdout, '\n'); } /* @@ -1735,11 +1745,6 @@ static int emit_one_suspect_detail(struct origin *suspect, int repeat) printf("summary %s\n", ci.summary.buf); if (suspect->commit->object.flags & UNINTERESTING) printf("boundary\n"); - if (suspect->previous) { - struct origin *prev = suspect->previous; - printf("previous %s ", oid_to_hex(&prev->commit->object.oid)); - write_name_quoted(prev->path, stdout, '\n'); - } commit_info_destroy(&ci); @@ -1760,7 +1765,7 @@ static void found_guilty_entry(struct blame_entry *ent, oid_to_hex(&suspect->commit->object.oid), ent->s_lno + 1, ent->lno + 1, ent->num_lines); emit_one_suspect_detail(suspect, 0); - write_filename_info(suspect->path); + write_filename_info(suspect); maybe_flush_or_die(stdout, "stdout"); } pi->blamed_lines += ent->num_lines; @@ -1884,7 +1889,7 @@ static void emit_porcelain_details(struct origin *suspect, int repeat) { if (emit_one_suspect_detail(suspect, repeat) || (suspect->commit->object.flags & MORE_THAN_ONE_PATH)) - write_filename_info(suspect->path); + write_filename_info(suspect); } static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent, diff --git a/t/t8011-blame-split-file.sh b/t/t8011-blame-split-file.sh new file mode 100755 index 0000000000..831125047b --- /dev/null +++ b/t/t8011-blame-split-file.sh @@ -0,0 +1,117 @@ +#!/bin/sh + +test_description=' +The general idea is that we have a single file whose lines come from +multiple other files, and those individual files were modified in the same +commits. That means that we will see the same commit in multiple contexts, +and each one should be attributed to the correct file. + +Note that we need to use "blame -C" to find the commit for all lines. We will +not bother testing that the non-C case fails to find it. That is how blame +behaves now, but it is not a property we want to make sure is retained. +' +. ./test-lib.sh + +# help avoid typing and reading long strings of similar lines +# in the tests below +generate_expect () { + while read nr data + do + i=0 + while test $i -lt $nr + do + echo $data + i=$((i + 1)) + done + done +} + +test_expect_success 'setup split file case' ' + # use lines long enough to trigger content detection + test_seq 1000 1010 >one && + test_seq 2000 2010 >two && + git add one two && + test_commit base && + + sed "6s/^/modified /" <one >one.tmp && + mv one.tmp one && + sed "6s/^/modified /" <two >two.tmp && + mv two.tmp two && + git add -u && + test_commit modified && + + cat one two >combined && + git add combined && + git rm one two && + test_commit combined +' + +test_expect_success 'setup simulated porcelain' ' + # This just reads porcelain-ish output and tries + # to output the value of a given field for each line (either by + # reading the field that accompanies this line, or referencing + # the information found last time the commit was mentioned). + cat >read-porcelain.pl <<-\EOF + my $field = shift; + while (<>) { + if (/^[0-9a-f]{40} /) { + flush(); + $hash = $&; + } elsif (/^$field (.*)/) { + $cache{$hash} = $1; + } + } + flush(); + + sub flush { + return unless defined $hash; + if (defined $cache{$hash}) { + print "$cache{$hash}\n"; + } else { + print "NONE\n"; + } + } + EOF +' + +for output in porcelain line-porcelain +do + test_expect_success "generate --$output output" ' + git blame --root -C --$output combined >output + ' + + test_expect_success "$output output finds correct commits" ' + generate_expect >expect <<-\EOF && + 5 base + 1 modified + 10 base + 1 modified + 5 base + EOF + perl read-porcelain.pl summary <output >actual && + test_cmp expect actual + ' + + test_expect_success "$output output shows correct filenames" ' + generate_expect >expect <<-\EOF && + 11 one + 11 two + EOF + perl read-porcelain.pl filename <output >actual && + test_cmp expect actual + ' + + test_expect_success "$output output shows correct previous pointer" ' + generate_expect >expect <<-EOF && + 5 NONE + 1 $(git rev-parse modified^) one + 10 NONE + 1 $(git rev-parse modified^) two + 5 NONE + EOF + perl read-porcelain.pl previous <output >actual && + test_cmp expect actual + ' +done + +test_done |