diff options
| -rw-r--r-- | Documentation/pretty-formats.txt | 8 | ||||
| -rw-r--r-- | pretty.c | 42 | ||||
| -rwxr-xr-x | t/t6006-rev-list-format.sh | 22 |
3 files changed, 70 insertions, 2 deletions
diff --git a/Documentation/pretty-formats.txt b/Documentation/pretty-formats.txt index 2a845b1e5..ca9c6d1f8 100644 --- a/Documentation/pretty-formats.txt +++ b/Documentation/pretty-formats.txt @@ -132,6 +132,14 @@ The placeholders are: - '%n': newline - '%x00': print a byte from a hex code +If you add a `{plus}` (plus sign) after '%' of a placeholder, a line-feed +is inserted immediately before the expansion if and only if the +placeholder expands to a non-empty string. + +If you add a `-` (minus sign) after '%' of a placeholder, line-feeds that +immediately precede the expansion are deleted if and only if the +placeholder expands to an empty string. + * 'tformat:' + The 'tformat:' format works exactly like 'format:', except that it @@ -595,8 +595,8 @@ static void format_decoration(struct strbuf *sb, const struct commit *commit) strbuf_addch(sb, ')'); } -static size_t format_commit_item(struct strbuf *sb, const char *placeholder, - void *context) +static size_t format_commit_one(struct strbuf *sb, const char *placeholder, + void *context) { struct format_commit_context *c = context; const struct commit *commit = c->commit; @@ -739,6 +739,44 @@ static size_t format_commit_item(struct strbuf *sb, const char *placeholder, return 0; /* unknown placeholder */ } +static size_t format_commit_item(struct strbuf *sb, const char *placeholder, + void *context) +{ + int consumed; + size_t orig_len; + enum { + NO_MAGIC, + ADD_LF_BEFORE_NON_EMPTY, + DEL_LF_BEFORE_EMPTY, + } magic = NO_MAGIC; + + switch (placeholder[0]) { + case '-': + magic = DEL_LF_BEFORE_EMPTY; + break; + case '+': + magic = ADD_LF_BEFORE_NON_EMPTY; + break; + default: + break; + } + if (magic != NO_MAGIC) + placeholder++; + + orig_len = sb->len; + consumed = format_commit_one(sb, placeholder, context); + if (magic == NO_MAGIC) + return consumed; + + if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) { + while (sb->len && sb->buf[sb->len - 1] == '\n') + strbuf_setlen(sb, sb->len - 1); + } else if ((orig_len != sb->len) && magic == ADD_LF_BEFORE_NON_EMPTY) { + strbuf_insert(sb, orig_len, "\n", 1); + } + return consumed + 1; +} + void format_commit_message(const struct commit *commit, const void *format, struct strbuf *sb, enum date_mode dmode) diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh index 59d1f6283..18a77a739 100755 --- a/t/t6006-rev-list-format.sh +++ b/t/t6006-rev-list-format.sh @@ -162,4 +162,26 @@ test_expect_success 'empty email' ' } ' +test_expect_success 'del LF before empty (1)' ' + git show -s --pretty=format:"%s%n%-b%nThanks%n" HEAD^^ >actual && + test $(wc -l <actual) = 2 +' + +test_expect_success 'del LF before empty (2)' ' + git show -s --pretty=format:"%s%n%-b%nThanks%n" HEAD >actual && + test $(wc -l <actual) = 6 && + grep "^$" actual +' + +test_expect_success 'add LF before non-empty (1)' ' + git show -s --pretty=format:"%s%+b%nThanks%n" HEAD^^ >actual && + test $(wc -l <actual) = 2 +' + +test_expect_success 'add LF before non-empty (2)' ' + git show -s --pretty=format:"%s%+b%nThanks%n" HEAD >actual && + test $(wc -l <actual) = 6 && + grep "^$" actual +' + test_done |