Fix some minor quoting issues with grave accent

* src/dispnew.c (add_window_display_history) [GLYPH_DEBUG]:
Remove redundant quotes.
* src/doc.c (uLSQM, uRSQM): New macros.
* src/doc.c (Fsubstitute_command_keys):
* src/syntax.c (Finternal_describe_syntax_value): Follow the user
preference for quotes rather than hardcoding the ‘grave’ style.
* src/regex.c (PUSH_FAILURE_POINT, POP_FAILURE_POINT)
(re_match_2_internal) [DEBUG]: In debugging output, quote C
strings with "...", not `...'.

1 files changed, 7 insertions, 2 deletions

diff --git a/src/doc.c b/src/doc.c
index 36619e1142e..a079cd27493 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -695,6 +695,8 @@ enum
   };
 static unsigned char const LSQM[] = { uLSQM0, uLSQM1, uLSQM2 };
 static unsigned char const RSQM[] = { uRSQM0, uRSQM1, uRSQM2 };
+#define uLSQM "\xE2\x80\x98"
+#define uRSQM "\xE2\x80\x99"
 
 DEFUN ("substitute-command-keys", Fsubstitute_command_keys,
        Ssubstitute_command_keys, 1, 1, 0,
@@ -921,11 +923,14 @@ Otherwise, return a new string.  */)
           if (NILP (tem))
             {
               name = Fsymbol_name (name);
-              insert_string ("\nUses keymap `");
+              insert1 (Fsubstitute_command_keys
+                       (build_string ("\nUses keymap "uLSQM)));
               insert_from_string (name, 0, 0,
                                   SCHARS (name),
                                   SBYTES (name), 1);
-              insert_string ("', which is not currently defined.\n");
+              insert1 (Fsubstitute_command_keys
+                       (build_string
+                        (uRSQM", which is not currently defined.\n")));
               if (start[-1] == '<') keymap = Qnil;
             }
           else if (start[-1] == '<')