nano

commit 01477d3b81a918cf711fedafd4c713199b9bba76
parent ebf9279f95f690dcba98babcc8bc2ecd99d48cfa
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Wed, 11 Mar 2020 13:46:46 +0100

justify: never break a line in leading whitespace

This fixes https://savannah.gnu.org/bugs/?57984.

The bug was old -- it existed since at least version 2.0.6.

Diffstat:
M
src/text.c
 | 
7
+++++++

1 file changed, 7 insertions(+), 0 deletions(-)
diff --git a/src/text.c b/src/text.c
@@ -1367,6 +1367,13 @@ ssize_t break_line(const char *line, ssize_t goal, bool snap_at_nl)
 	int charlen = 0;
 		/* The length of the current character, in bytes. */
 
+	/* Skip over leading whitespace, where a line should never be broken. */
+	while (*line != '\0' && is_blank_mbchar(line)) {
+		charlen = advance_over(line, &column);
+		line += charlen;
+		index += charlen;
+	}
+
 	/* Find the last blank that does not overshoot the target column. */
 	while (*line != '\0' && ((ssize_t)column <= goal)) {
 		if (is_blank_mbchar(line))