(Ffind_operation_coding_system): If a function in

XXX-coding-system-alist returns a coding system (instead of cons
of coding systems), return cons of it.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/coding.c b/src/coding.c
index 2b46877055d..9487261b78d 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -3788,14 +3788,22 @@ which is a list of all the arguments given to this function.")
               || (INTEGERP (target) && EQ (target, XCONS (elt)->car))))
         {
           val = XCONS (elt)->cdr;
+          /* Here, if VAL is both a valid coding system and a valid
+             function symbol, we return VAL as a coding system.  */
           if (CONSP (val))
             return val;
           if (! SYMBOLP (val))
             return Qnil;
           if (! NILP (Fcoding_system_p (val)))
             return Fcons (val, val);
-          if (!NILP (Ffboundp (val)))
-            return call1 (val, Flist (nargs, args));
+          if (! NILP (Ffboundp (val)))
+            {
+              val = call1 (val, Flist (nargs, args));
+              if (CONSP (val))
+                return val;
+              if (SYMBOLP (val) && ! NILP (Fcoding_system_p (val)))
+                return Fcons (val, val);
+            }
           return Qnil;
         }
     }