nano

commit 0167f78dcae4e53f12d27ff1d1c0c3f41af85c20
parent 282ec08e5e7d69983d323830f7a669378fe3c25a
Author: Benno Schulenberg <bensberg@telfort.nl>
Date:   Sun, 20 Nov 2022 11:25:45 +0100

feedback: warn when the cursor sits on a Byte Order Mark (BOM)

The ceck is only done at the start of a line, because in other places
the BOM will be glued to the preceding character.

This partially addresses https://bugs.debian.org/964901.
Reported-by: Nils König <oneric@oneric.de>

Diffstat:
M
src/nano.c
 | 
10
++++++++++

1 file changed, 10 insertions(+), 0 deletions(-)
diff --git a/src/nano.c b/src/nano.c
@@ -2683,6 +2683,16 @@ int main(int argc, char **argv)
 
 		as_an_at = TRUE;
 
+#if defined(ENABLE_UTF8) && !defined(NANO_TINY)
+#define byte(n)  (unsigned char)openfile->current->data[n]
+		/* Tell the user when the cursor sits on a BOM. */
+		if (openfile->current_x == 0 && byte(0) == 0xEF && byte(1) == 0xBB &&
+										byte(2) == 0xBF && using_utf8()) {
+			statusline(NOTICE, _("Byte Order Mark"));
+			set_blankdelay_to_one();
+		}
+#endif
+
 		if ((refresh_needed && LINES > 1) || (LINES == 1 && lastmessage <= HUSH))
 			edit_refresh();
 		else