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[PATCH 1/3] format-patch: refactor output selection

From
Jeff King <peff@peff.net>
Date
Nov 4, 2020, 13:25 UTC
Message-ID
<20201104132522.GA3030146@coredump.intra.peff.net>
In-Reply-To
<20201104132428.GA2491189@coredump.intra.peff.net>

The --stdout and --output-directory options are mutually exclusive, but it's hard to tell from reading the code. We have three separate conditionals that check for use_stdout, and it's only after we've set up the output_directory fully that we check whether the user also specified --stdout.

Instead, let's check the exclusion explicitly first, then have a single conditional that handles stdout versus an output directory. This is slightly easier to follow now, and also will keep things sane when we add another output mode in a future patch.

Signed-off-by: Jeff King <peff@peff.net>
---
 builtin/log.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/builtin/log.c b/builtin/log.c
index 9f939e6cdf..4c391ba3ca 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1942,20 +1942,20 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
 	if (rev.show_notes)
 		load_display_notes(&rev.notes_opt);
 
-	if (!output_directory && !use_stdout)
-		output_directory = config_output_directory;
+	if (use_stdout + !!output_directory > 1)
+		die(_("specify only one of --stdout, --output, and --output-directory"));
 
-	if (!use_stdout)
-		output_directory = set_outdir(prefix, output_directory);
-	else
+	if (use_stdout) {
 		setup_pager();
-
-	if (output_directory) {
+	} else {
 		int saved;
+
+		if (!output_directory)
+			output_directory = config_output_directory;
+		output_directory = set_outdir(prefix, output_directory);
+
 		if (rev.diffopt.use_color != GIT_COLOR_ALWAYS)
 			rev.diffopt.use_color = GIT_COLOR_NEVER;
-		if (use_stdout)
-			die(_("standard output, or directory, which one?"));
 		/*
 		 * We consider <outdir> as 'outside of gitdir', therefore avoid
 		 * applying adjust_shared_perm in s-c-l-d.
-- 
2.29.2.559.g8ec94df761
Previous: Jeff KingNext: Eric Sunshine
Message 3 of 17 in “[Bug report] Crash when creating patch”
  1. Johannes PostlerNov 4, 2020
  2. Jeff KingNov 4, 2020
  3. 1/3 format-patch: refactor output selectionJeff King, Nov 4, 2020
  4. Eric SunshineNov 4, 2020
  5. Jeff KingNov 4, 2020
  6. 2/3 format-patch: tie file-opening logic to output_directoryJeff King, Nov 4, 2020
  7. Eric SunshineNov 4, 2020
  8. 3/3 format-patch: support --output optionJeff King, Nov 4, 2020
  9. Eric SunshineNov 4, 2020
  10. Jeff KingNov 4, 2020
  11. Eric SunshineNov 4, 2020
  12. Junio C HamanoNov 4, 2020
  13. format-patch --outputJeff King, Nov 4, 2020
  14. 1/3 format-patch: refactor output selectionJeff King, Nov 4, 2020
  15. 2/3 format-patch: tie file-opening logic to output_directoryJeff King, Nov 4, 2020
  16. 3/3 format-patch: support --output optionJeff King, Nov 4, 2020
  17. Johannes PostlerNov 5, 2020

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