From b10d6c09ca74b6c603df180b82428a87a5b90746 Mon Sep 17 00:00:00 2001
From: Harald Nordgren <haraldnordgren@gmail.com>
Date: Fri, 19 Dec 2025 00:20:00 +0100
Subject: [PATCH] diff: add --no-indicators option

Add --no-indicators to replace '+', '-', and ' ' indicators in the
left margin with spaces. Colors are preserved, allowing diffs to be
distinguished by color alone.

This is useful when copy-pasting diff output, as the indicators no
longer need to be manually removed.

Signed-off-by: Harald Nordgren <haraldnordgren@gmail.com>
---
 diff.c                 | 16 ++++++++++++++++
 t/t4000-diff-format.sh | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/diff.c b/diff.c
index 436da250eb150d..adc311100ecb64 100644
--- a/diff.c
+++ b/diff.c
@@ -5290,6 +5290,19 @@ static int diff_opt_char(const struct option *opt,
 	return 0;
 }
 
+static int diff_opt_no_indicators(const struct option *opt,
+				  const char *arg, int unset)
+{
+	struct diff_options *options = opt->value;
+
+	BUG_ON_OPT_NEG(unset);
+	BUG_ON_OPT_ARG(arg);
+
+	options->output_indicators[OUTPUT_INDICATOR_NEW] = ' ';
+	options->output_indicators[OUTPUT_INDICATOR_OLD] = ' ';
+	return 0;
+}
+
 static int diff_opt_color_moved(const struct option *opt,
 				const char *arg, int unset)
 {
@@ -5828,6 +5841,9 @@ struct option *add_diff_options(const struct option *opts,
 		OPT_INTEGER_F(0, "inter-hunk-context", &options->interhunkcontext,
 			      N_("show context between diff hunks up to the specified number of lines"),
 			      PARSE_OPT_NONEG),
+		OPT_CALLBACK_F(0, "no-indicators", options, NULL,
+			       N_("do not show '+', '-' and ' ' indicators in the left margin"),
+			       PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_no_indicators),
 		OPT_CALLBACK_F(0, "output-indicator-new",
 			       &options->output_indicators[OUTPUT_INDICATOR_NEW],
 			       N_("<char>"),
diff --git a/t/t4000-diff-format.sh b/t/t4000-diff-format.sh
index 32b14e3a714b0b..18635530563b53 100755
--- a/t/t4000-diff-format.sh
+++ b/t/t4000-diff-format.sh
@@ -95,6 +95,38 @@ test_expect_success 'git diff-files --patch --no-patch does not show the patch'
 	test_must_be_empty err
 '
 
+cat >expected_no_indicators <<\EOF
+diff --git a/path0 b/path0
+old mode 100644
+new mode 100755
+--- a/path0
++++ b/path0
+@@ -1,3 +1,3 @@
+ Line 1
+ Line 2
+ line 3
+ Line 3
+diff --git a/path1 b/path1
+deleted file mode 100755
+--- a/path1
++++ /dev/null
+@@ -1,3 +0,0 @@
+ Line 1
+ Line 2
+ line 3
+EOF
+
+test_expect_success 'git diff-files --no-indicators replaces +/- with spaces' '
+	git diff-files -p --no-indicators >actual &&
+	compare_diff_patch expected_no_indicators actual
+'
+
+test_expect_success 'git diff-files --no-indicators --color preserves colors' '
+	git diff-files -p --no-indicators --color --ws-error-highlight=none >actual.raw &&
+	test_decode_color <actual.raw >actual &&
+	grep -F "<RED> line 3<RESET>" actual &&
+	grep -F "<GREEN> Line 3<RESET>" actual
+'
 
 # Smudge path2/path3 so that dirstat has something to show
 date >path2/path3