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branch, for-each-ref, tag: add option to omit empty lines

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If the given format string expands to the empty string, a newline is
still printed. This makes using the output linewise more tedious. For
example, git update-ref --stdin does not accept empty lines.

Add options to "git branch", "git for-each-ref", and "git tag" to
not print these empty lines.  The default behavior remains the same.

Signed-off-by: Øystein Walle <oystwa@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Øystein Walle
2023-04-07 19:53:16 +02:00
committed by Junio C Hamano
parent 73876f4861
commit aabfdc9514
9 changed files with 75 additions and 4 deletions
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6
builtin/branch.c
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@ -41,6 +41,7 @@ static const char *head;
static struct object_id head_oid;
static int recurse_submodules = 0;
static int submodule_propagate_branches = 0;
static int omit_empty = 0;
static int branch_use_color = -1;
static char branch_colors[][COLOR_MAXLEN] = {
@ -461,7 +462,8 @@ static void print_ref_list(struct ref_filter *filter, struct ref_sorting *sortin
string_list_append(output, out.buf);
} else {
fwrite(out.buf, 1, out.len, stdout);
putchar('\n');
if (out.len || !omit_empty)
putchar('\n');
}
}
@ -670,6 +672,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
OPT_BIT('D', NULL, &delete, N_("delete branch (even if not merged)"), 2),
OPT_BIT('m', "move", &rename, N_("move/rename a branch and its reflog"), 1),
OPT_BIT('M', NULL, &rename, N_("move/rename a branch, even if target exists"), 2),
OPT_BOOL(0, "omit-empty", &omit_empty,
N_("do not output a newline after empty formatted refs")),
OPT_BIT('c', "copy", &copy, N_("copy a branch and its reflog"), 1),
OPT_BIT('C', NULL, &copy, N_("copy a branch, even if target exists"), 2),
OPT_BOOL('l', "list", &list, N_("list branch names")),