patch 8.2.4657: errors for functions are sometimes hard to readv8.2.4657

Problem:    Errors for functions are sometimes hard to read.
Solution:   Use printable_func_name() in more places.

1 files changed, 22 insertions, 8 deletions

diff --git a/src/eval.c b/src/eval.c
index 4447186e22..0d24f76888 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -5296,15 +5296,29 @@ echo_string_core(
 	    break;
 
 	case VAR_FUNC:
-	    if (echo_style)
 	    {
-		*tofree = NULL;
-		r = tv->vval.v_string;
-	    }
-	    else
-	    {
-		*tofree = string_quote(tv->vval.v_string, TRUE);
-		r = *tofree;
+		char_u buf[MAX_FUNC_NAME_LEN];
+
+		if (echo_style)
+		{
+		    r = make_ufunc_name_readable(tv->vval.v_string,
+						       buf, MAX_FUNC_NAME_LEN);
+		    if (r == buf)
+		    {
+			r = vim_strsave(buf);
+			*tofree = r;
+		    }
+		    else
+			*tofree = NULL;
+		}
+		else
+		{
+		    *tofree = string_quote(tv->vval.v_string == NULL ? NULL
+			    : make_ufunc_name_readable(
+				tv->vval.v_string, buf, MAX_FUNC_NAME_LEN),
+									 TRUE);
+		    r = *tofree;
+		}
 	    }
 	    break;