From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Fri, 23 Aug 2019 04:20:41 +0000 (+0200)
Subject: Give a better error message when reading invalid "\unicode" escapes.
X-Git-Tag: emacs-27.0.90~1328^2~116
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=fbbc257190d115dc76e1a8cf4e4992d52d7f55b9;p=emacs.git

Give a better error message when reading invalid "\unicode" escapes.

* src/lread.c (read_escape): Give a clearer error message on
Unicode escape sequences (bug#36988).
---

diff --git a/src/lread.c b/src/lread.c
index e444830c99a..6ae7a0d8ba0 100644
--- a/src/lread.c
+++ b/src/lread.c
@@ -2585,7 +2585,8 @@ read_escape (Lisp_Object readcharfun, bool stringp)
 	       want.  */
 	    int digit = char_hexdigit (c);
 	    if (digit < 0)
-	      error ("Non-hex digit used for Unicode escape");
+	      error ("Non-hex character used for Unicode escape: %c (%d)",
+		     c, c);
 	    i = (i << 4) + digit;
 	  }
 	if (i > 0x10FFFF)