mpick: add mmsg(7) style ranges to msglist

man/mpick.1

@@ -32,7 +32,7 @@ see
 .El
 .Sh MSGLISTS
 .Nm
-message lists (msglist) mostly compatible with
+message lists (msglist) are mostly compatible with
 .Xr mailx 1
 are message
 specifications used as shortened
@@ -42,7 +42,7 @@ and can include:
 .It Ar n
 Message number
 .Ar n .
-.It Ar n Ns Cm "-" Ns Ar m
+.It Ar n Ns Cm ":" Ns Ar m , Ar n Ns Cm "-" Ns Ar m
 An inclusive range of message numbers between
 .Ar n
 and

mpick.c

@@ -671,8 +671,8 @@ parse_msglist(const char *s)
 	default:
 		pos = (char *)s;
 
-		if ((d = strchr(s, '-')) && parse_num(&n) &&
-		    (pos = (char *)d + 1) && parse_num(&m)) {
+		if (((d = strchr(s, ':')) || (d = strchr(s, '-')))
+		    && parse_num(&n) && (pos = (char *)d + 1) && parse_num(&m)) {
 			/* index >= n */
 			e1 = mkexpr(EXPR_GE);
 			e1->a.prop = PROP_INDEX;