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Re: [PATCH v3 0/4] showing existing ws breakage

From
Jeff King <peff@peff.net>
Date
May 27, 2015, 07:22 UTC
Message-ID
<20150527072218.GB6898@peff.net>
In-Reply-To
<1432708232-29892-1-git-send-email-gitster@pobox.com>
On Tue, May 26, 2015 at 11:30:28PM -0700, Junio C Hamano wrote:
Show 17 quoted lines
> The fourth one in v2 used a new option "--[no-]ws-check-deleted",
> but in this round a new option "--ws-error-highlight=<kinds>" is
> defined instead.  With that, you can say
> 
> 	diff --ws-error-highlight=new,old
> 
> to say "I want to see whitespace errors on new and old lines", and
> 
> 	diff --ws-error-highlight=new,old,context
> 	diff --ws-error-highlight=all
> 	
> can be used to also see whitespace errors on context lines.  Being
> able to see whitespace errors on context lines, i.e. the ones that
> were there in the original and you left intact, would help you see
> how prevalent whitespace errors are in the original and hopefully
> would make it easier for you to decide if a separate preliminary
> clean-up to only fix these whitespace errors is warranted.
That makes sense. Neat feature.

In color.diff.*, these are called "new", "old", and "plain". I am of the opinion that "context" is a far better name than "plain", but perhaps we should support both for consistency.

Here's a patch for the color.diff side, if we want to go that route.
-- >8 --
Subject: diff: accept color.diff.context as a synonym for "plain"

The term "plain" is a bit ambiguous; let's allow the more specific "context", but keep "plain" around for compatibility.

Signed-off-by: Jeff King <peff@peff.net>
---
I didn't bother mentioning the historical "plain" in the documentation.
I don't know if it's better to (for people who find it in the wild and
wonder what it means) or if it simply clutters the description. It may
also be that people don't find "plain" as meaningless as I do, and would
rather leave it as the primary in the documentation (and accepting
"context" is just a nicety).

I also resisted the urge to refactor every internal variable and enum mentioning "plain" into "context". I guess whether that is a good idea depends on how strongly you agree that "plain" is a bad name. :)

 Documentation/config.txt | 2 +-
 diff.c                   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 5f76e8c..34ef9fe 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -914,7 +914,7 @@ command line with the `--color[=<when>]` option.
 color.diff.<slot>::
 	Use customized color for diff colorization.  `<slot>` specifies
 	which part of the patch to use the specified color, and is one
-	of `plain` (context text), `meta` (metainformation), `frag`
+	of `context` (context text), `meta` (metainformation), `frag`
 	(hunk header), 'func' (function in hunk header), `old` (removed lines),
 	`new` (added lines), `commit` (commit headers), or `whitespace`
 	(highlighting whitespace errors).
diff --git a/diff.c b/diff.c
index 7500c55..27bd371 100644
--- a/diff.c
+++ b/diff.c
@@ -54,7 +54,7 @@ static char diff_colors[][COLOR_MAXLEN] = {
 
 static int parse_diff_color_slot(const char *var)
 {
-	if (!strcasecmp(var, "plain"))
+	if (!strcasecmp(var, "context") || !strcasecmp(var, "plain"))
 		return DIFF_PLAIN;
 	if (!strcasecmp(var, "meta"))
 		return DIFF_METAINFO;
-- 
2.4.1.552.g6de66a4
Previous: Junio C HamanoNext: Junio C Hamano
Message 21 of 30 in “Mark trailing whitespace error in del lines of diff”
  1. Christian BrabandtMay 25, 2015
  2. brian m. carlsonMay 25, 2015
  3. Junio C HamanoMay 25, 2015
  4. brian m. carlsonMay 25, 2015
  5. Christian BrabandtMay 26, 2015
  6. Junio C HamanoMay 26, 2015
  7. Junio C HamanoMay 26, 2015
  8. Christian BrabandtMay 26, 2015
  9. Junio C HamanoMay 26, 2015
  10. Christian BrabandtMay 26, 2015
  11. 0/5 showing existing ws breakageJunio C Hamano, May 26, 2015
  12. 1/4 t4015: modernise styleJunio C Hamano, May 26, 2015
  13. 2/4 t4015: separate common setup and per-test expectationJunio C Hamano, May 26, 2015
  14. 3/4 diff.c: add emit_del_line() and update callers of emit_line_0()Junio C Hamano, May 26, 2015
  15. 4/4 diff.c: --ws-check-deleted optionJunio C Hamano, May 26, 2015
  16. 0/4 showing existing ws breakageJunio C Hamano, May 27, 2015
  17. 1/4 t4015: modernise styleJunio C Hamano, May 27, 2015
  18. 2/4 t4015: separate common setup and per-test expectationJunio C Hamano, May 27, 2015
  19. 3/4 diff.c: add emit_del_line() and emit_context_line()Junio C Hamano, May 27, 2015
  20. 4/4 diff.c: --ws-error-highlight=<kind> optionJunio C Hamano, May 27, 2015
  21. Jeff KingMay 27, 2015
  22. Junio C HamanoMay 27, 2015
  23. Jeff KingMay 27, 2015
  24. Junio C HamanoMay 27, 2015
  25. Jeff KingMay 27, 2015
  26. Junio C HamanoMay 27, 2015
  27. Jeff KingMay 27, 2015
  28. Junio C HamanoMay 26, 2015
  29. Christian BrabandtMay 26, 2015
  30. Junio C HamanoMay 26, 2015

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