patch 8.0.1553: cannot see what digraph is used to insert a character

Problem:    Cannot see what digraph is used to insert a character.
Solution:   Show the digraph with the "ga" command. (Christian Brabandt)
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index e05215a..5b8e2d5 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -49,6 +49,9 @@
     char	buf1[20];
     char	buf2[20];
     char_u	buf3[7];
+#ifdef FEAT_DIGRAPHS
+    char_u      *dig;
+#endif
 #ifdef FEAT_MBYTE
     int		cc[MAX_MCO];
     int		ci = 0;
@@ -94,7 +97,15 @@
 	else
 #endif
 	    buf2[0] = NUL;
-	vim_snprintf((char *)IObuff, IOSIZE,
+#ifdef FEAT_DIGRAPHS
+	dig = get_digraph_for_char(cval);
+	if (dig != NULL)
+	    vim_snprintf((char *)IObuff, IOSIZE,
+		_("<%s>%s%s  %d,  Hex %02x,  Oct %03o, Digr %s"),
+			      transchar(c), buf1, buf2, cval, cval, cval, dig);
+	else
+#endif
+	    vim_snprintf((char *)IObuff, IOSIZE,
 		_("<%s>%s%s  %d,  Hex %02x,  Octal %03o"),
 				  transchar(c), buf1, buf2, cval, cval, cval);
 #ifdef FEAT_MBYTE
@@ -121,9 +132,19 @@
 		)
 	    IObuff[len++] = ' '; /* draw composing char on top of a space */
 	len += (*mb_char2bytes)(c, IObuff + len);
-	vim_snprintf((char *)IObuff + len, IOSIZE - len,
-			c < 0x10000 ? _("> %d, Hex %04x, Octal %o")
-				    : _("> %d, Hex %08x, Octal %o"), c, c, c);
+#ifdef FEAT_DIGRAPHS
+	dig = get_digraph_for_char(c);
+	if (dig != NULL)
+	    vim_snprintf((char *)IObuff + len, IOSIZE - len,
+			c < 0x10000 ? _("> %d, Hex %04x, Oct %o, Digr %s")
+				    : _("> %d, Hex %08x, Oct %o, Digr %s"),
+					c, c, c, dig);
+	else
+#endif
+	    vim_snprintf((char *)IObuff + len, IOSIZE - len,
+			 c < 0x10000 ? _("> %d, Hex %04x, Octal %o")
+				     : _("> %d, Hex %08x, Octal %o"),
+				     c, c, c);
 	if (ci == MAX_MCO)
 	    break;
 	if (enc_utf8)