[PATCH] trailer: allow spaces in tokens

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From: Max Bernstein <max@xxxxxxxxxxxxxxxxx>

The docs (for example, https://git-scm.com/docs/git-interpret-trailers)
say that whitespace should be allowed inside tokens:

> There can also be whitespaces inside the token and the value.

The code since e4319562bc2834096fade432fd90c985b96476db does not allow
that, so re-enable and add a test.

Signed-off-by: Max Bernstein <max@xxxxxxxxxxxxxxxxx>
---
    trailer: allow spaces in tokens

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1309%2Ftekknolagi%2Fmaint-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1309/tekknolagi/maint-v1
Pull-Request: https://github.com/git/git/pull/1309

 t/t7513-interpret-trailers.sh | 40 +++++++++++++++++++++++++++++++++++
 trailer.c                     |  7 +-----
 2 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/t/t7513-interpret-trailers.sh b/t/t7513-interpret-trailers.sh
index 97f10905d23..47bf83003ef 100755
--- a/t/t7513-interpret-trailers.sh
+++ b/t/t7513-interpret-trailers.sh
@@ -1481,6 +1481,46 @@ test_expect_success 'only-trailers omits non-trailer in middle of block' '
 	test_cmp expected actual
 '
 
+test_expect_success 'supports spaces inside token' '
+	git config --unset trailer.sign.command &&
+	cat >expected <<-\EOF &&
+		Signed-off-by: nobody <nobody@nowhere>
+		some other trailer: a value
+		Signed-off-by: somebody <somebody@somewhere>
+	EOF
+	echo "wrote to expected" 1>&2 &&
+	git interpret-trailers --only-trailers >actual <<-\EOF &&
+		subject
+
+		it is important that the trailers below are signed-off-by
+		so that they meet the "25% trailers Git knows about" heuristic
+
+		Signed-off-by: nobody <nobody@nowhere>
+		some other trailer: a value
+		Signed-off-by: somebody <somebody@somewhere>
+	EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'does not support space at beginning of token' '
+	cat >expected <<-\EOF &&
+		Signed-off-by: nobody <nobody@nowhere> not a trailer: thing
+		Signed-off-by: somebody <somebody@somewhere>
+	EOF
+	echo "wrote to expected" 1>&2 &&
+	git interpret-trailers --only-trailers --unfold >actual <<-\EOF &&
+		subject
+
+		it is important that the trailers below are signed-off-by
+		so that they meet the "25% trailers Git knows about" heuristic
+
+		Signed-off-by: nobody <nobody@nowhere>
+		 not a trailer: thing
+		Signed-off-by: somebody <somebody@somewhere>
+	EOF
+	test_cmp expected actual
+'
+
 test_expect_success 'only input' '
 	git config trailer.sign.command "echo config-value" &&
 	cat >expected <<-\EOF &&
diff --git a/trailer.c b/trailer.c
index d419c20735e..d02a9154512 100644
--- a/trailer.c
+++ b/trailer.c
@@ -618,17 +618,12 @@ static int token_matches_item(const char *tok, struct arg_item *item, size_t tok
  */
 static ssize_t find_separator(const char *line, const char *separators)
 {
-	int whitespace_found = 0;
 	const char *c;
 	for (c = line; *c; c++) {
 		if (strchr(separators, *c))
 			return c - line;
-		if (!whitespace_found && (isalnum(*c) || *c == '-'))
+		if (isalnum(*c) || *c == '-' || (c != line && (*c == ' ' || *c == '\t')))
 			continue;
-		if (c != line && (*c == ' ' || *c == '\t')) {
-			whitespace_found = 1;
-			continue;
-		}
 		break;
 	}
 	return -1;

base-commit: ad60dddad72dfb8367bd695028b5b8dc6c33661b
-- 
gitgitgadget



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