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[PATCH v2 2/5] diff: move the fallback "--exit-code" code down

From
Junio C Hamano <gitster@pobox.com>
Date
Aug 17, 2023, 22:29 UTC
Message-ID
<20230817222949.3835424-3-gitster@pobox.com>
In-Reply-To
<20230817222949.3835424-1-gitster@pobox.com>

When "--exit-code" is asked and the code cannot just answer by comparing the object names on both sides but need to inspect and compare the contents, there are two ways that the result is found out.

Some output modes, like "--stat" and "--patch", inherently have to inspect the contents in order to _show_ the differences in the way they do. The codepaths for these modes set the .found_changes bit as they compute what to show.

However, other output modes do not need to inspect the contents to show the differences in the way they do. The most notable example is "--quiet", which does not need to compute any output. When they are asked to report "--exit-code", they run the codepaths for the "--patch" output with their output redirected to "/dev/null", only to set the .found_changes bit.

Currently, this fallback invocation of "--patch" output is done after the "--stat" output format and its friends and before the "--patch" and internal callback logic. Move it to the end of the sequence to clarify the fallback status of this code block.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 diff.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)
diff --git a/diff.c b/diff.c
index 03d0cfc700..ce9c8272c7 100644
--- a/diff.c
+++ b/diff.c
@@ -6555,6 +6555,21 @@ void diff_flush(struct diff_options *options)
 		separator++;
 	}
 
+	if (output_format & DIFF_FORMAT_PATCH) {
+		if (separator) {
+			emit_diff_symbol(options, DIFF_SYMBOL_SEPARATOR, NULL, 0, 0);
+			if (options->stat_sep)
+				/* attach patch instead of inline */
+				emit_diff_symbol(options, DIFF_SYMBOL_STAT_SEP,
+						 NULL, 0, 0);
+		}
+
+		diff_flush_patch_all_file_pairs(options);
+	}
+
+	if (output_format & DIFF_FORMAT_CALLBACK)
+		options->format_callback(q, options, options->format_callback_data);
+
 	if (output_format & DIFF_FORMAT_NO_OUTPUT &&
 	    options->flags.exit_with_status &&
 	    options->flags.diff_from_contents) {
@@ -6576,21 +6591,6 @@ void diff_flush(struct diff_options *options)
 		}
 	}
 
-	if (output_format & DIFF_FORMAT_PATCH) {
-		if (separator) {
-			emit_diff_symbol(options, DIFF_SYMBOL_SEPARATOR, NULL, 0, 0);
-			if (options->stat_sep)
-				/* attach patch instead of inline */
-				emit_diff_symbol(options, DIFF_SYMBOL_STAT_SEP,
-						 NULL, 0, 0);
-		}
-
-		diff_flush_patch_all_file_pairs(options);
-	}
-
-	if (output_format & DIFF_FORMAT_CALLBACK)
-		options->format_callback(q, options, options->format_callback_data);
-
 	for (i = 0; i < q->nr; i++)
 		diff_free_filepair(q->queue[i]);
 free_queue:
-- 
2.42.0-rc2
Previous: Junio C HamanoNext: Junio C Hamano
Message 16 of 36 in “git bug report”
  1. Paul WatsonAug 4, 2023
  2. rsbecker@nexbridge.comAug 4, 2023
  3. Paul WatsonAug 4, 2023
  4. rsbecker@nexbridge.comAug 4, 2023
  5. Paul WatsonAug 7, 2023
  6. Paul WatsonAug 8, 2023
  7. rsbecker@nexbridge.comAug 8, 2023
  8. Junio C HamanoAug 8, 2023
  9. diff: tighten interaction between -w and --exit-codeJunio C Hamano, Aug 16, 2023
  10. Jeff KingAug 17, 2023
  11. Junio C HamanoAug 17, 2023
  12. Jeff KingAug 17, 2023
  13. Junio C HamanoAug 17, 2023
  14. 0/5 fix interactions with "-w" and "--exit-code"Junio C Hamano, Aug 17, 2023
  15. 1/5 diff: --dirstat leakfixJunio C Hamano, Aug 17, 2023
  16. 2/5 diff: move the fallback "--exit-code" code downJunio C Hamano, Aug 17, 2023
  17. 3/5 diff: mode-only change should be noticed by "--patch -w --exit-code"Junio C Hamano, Aug 17, 2023
  18. Junio C HamanoAug 18, 2023
  19. 4/5 diff: teach "--stat -w --exit-code" to notice differencesJunio C Hamano, Aug 17, 2023
  20. 5/5 diff: teach "--name-status" and friends to honor "--exit-code -w"Junio C Hamano, Aug 17, 2023
  21. Junio C HamanoAug 17, 2023
  22. 0/5 fix interactions with "-w" and "--exit-code"Junio C Hamano, Aug 18, 2023
  23. 2/5 diff: mode-only change should be noticed by "--patch -w --exit-code"Junio C Hamano, Aug 18, 2023
  24. 3/5 diff: teach "--stat -w --exit-code" to notice differencesJunio C Hamano, Aug 18, 2023
  25. Jeff KingAug 21, 2023
  26. 4/5 t4040: remove test that succeeded for a wrong reasonJunio C Hamano, Aug 18, 2023
  27. 1/5 diff: move the fallback "--exit-code" code downJunio C Hamano, Aug 18, 2023
  28. Jeff KingAug 21, 2023
  29. 5/5 diff: the -w option breaks --exit-code for --raw and other output modesJunio C Hamano, Aug 18, 2023
  30. Jeff KingAug 21, 2023
  31. Jeff KingAug 21, 2023
  32. Jeff KingAug 21, 2023
  33. Junio C HamanoAug 21, 2023
  34. Junio C HamanoAug 21, 2023
  35. Jeff KingAug 22, 2023
  36. Jeff KingAug 21, 2023

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