[PATCH] diff.c: offer config option to control ws handling in move detection

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Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
---

This is the cherry on the cake named sb/diff-color-move-more.

 Documentation/config.txt       | 5 +++++
 Documentation/diff-options.txt | 7 +++++--
 diff.c                         | 9 +++++++++
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 2659153cb37..6ca7118b018 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1122,6 +1122,11 @@ diff.colorMoved::
 	true the default color mode will be used. When set to false,
 	moved lines are not colored.
 
+diff.colorMovedWS::
+	When moved lines are colored using e.g. the `diff.colorMoved` setting,
+	this option controls the `<mode>` how spaces are treated
+	for details of valid modes see '--color-moved-ws' in linkgit:git-diff[1].
+
 color.diff.<slot>::
 	Use customized color for diff colorization.  `<slot>` specifies
 	which part of the patch to use the specified color, and is one
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 143acd9417e..8da7fed4e22 100644
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -294,8 +294,11 @@ dimmed_zebra::
 
 --color-moved-ws=<modes>::
 	This configures how white spaces are ignored when performing the
-	move detection for `--color-moved`. These modes can be given
-	as a comma separated list:
+	move detection for `--color-moved`.
+ifdef::git-diff[]
+	It can be set by the `diff.colorMovedWS` configuration setting.
+endif::git-diff[]
+	These modes can be given as a comma separated list:
 +
 --
 ignore-space-at-eol::
diff --git a/diff.c b/diff.c
index f51f0ac32f4..9de917108d8 100644
--- a/diff.c
+++ b/diff.c
@@ -35,6 +35,7 @@ static int diff_rename_limit_default = 400;
 static int diff_suppress_blank_empty;
 static int diff_use_color_default = -1;
 static int diff_color_moved_default;
+static int diff_color_moved_ws_default;
 static int diff_context_default = 3;
 static int diff_interhunk_context_default;
 static const char *diff_word_regex_cfg;
@@ -332,6 +333,13 @@ int git_diff_ui_config(const char *var, const char *value, void *cb)
 		diff_color_moved_default = cm;
 		return 0;
 	}
+	if (!strcmp(var, "diff.colormovedws")) {
+		int cm = parse_color_moved_ws(value);
+		if (cm < 0)
+			return -1;
+		diff_color_moved_ws_default = cm;
+		return 0;
+	}
 	if (!strcmp(var, "diff.context")) {
 		diff_context_default = git_config_int(var, value);
 		if (diff_context_default < 0)
@@ -4327,6 +4335,7 @@ void diff_setup(struct diff_options *options)
 	}
 
 	options->color_moved = diff_color_moved_default;
+	options->color_moved_ws_handling = diff_color_moved_ws_default;
 }
 
 void diff_setup_done(struct diff_options *options)
-- 
2.18.0.233.g985f88cf7e-goog




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