nano

commit e8f69e40d1a51299b1fae4858d73bd524c163671
parent 297fb013cb18bcceb15366c7877880a5ce0299e2
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Sun, 21 Apr 2019 10:06:56 +0200

wrapping: add a missing space only when the remainder will be prepended

When automatic hard-wrapping causes some piece of a line to be pushed
to the next line, then a separating space needs to be added at the tail
of this piece only when this piece actually gets prepended.

This fixes https://savannah.gnu.org/bugs/?56185.

Bug existed since version 2.9.2, commit 29f7654a.

Diffstat:
M
src/text.c
 | 
5
++---

1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/src/text.c b/src/text.c
@@ -1466,7 +1466,8 @@ bool do_wrap(void)
 	/* We prepend the wrapped text to the next line, if the prepend_wrap
 	 * flag is set, there is a next line, and prepending would not make
 	 * the line too long. */
-	if (prepend_wrap && line != openfile->filebot) {
+	if (prepend_wrap && line != openfile->filebot &&
+					rest_length + strlen(line->next->data) <= wrap_at) {
 		const char *tail = remainder + move_mbleft(remainder, rest_length);
 
 		/* Go to the end of the line. */
@@ -1488,13 +1489,11 @@ bool do_wrap(void)
 #endif
 		}
 
-		if (rest_length + strlen(line->next->data) <= wrap_at) {
 			/* Delete the LF to join the two lines. */
 			do_delete();
 			/* Delete any leading blanks from the joined-on line. */
 			while (is_blank_mbchar(&line->data[openfile->current_x]))
 				do_delete();
-		}
 	}
 
 	/* Go to the wrap location. */