The apropos(1) manual still documents the unary -i operator for

regular expression search terms, but it appears that somewhere
along the way, the implementation got lost, so restore it.
Bug found while investigating other reports from Gonzalo Tornaria.

diff --git a/usr.bin/mandoc/mansearch.c b/usr.bin/mandoc/mansearch.c
index e56e758..cad99d5 100644 (file)
--- a/usr.bin/mandoc/mansearch.c
+++ b/usr.bin/mandoc/mansearch.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mansearch.c,v 1.54 2017/04/18 13:57:12 schwarze Exp $ */
+/*     $OpenBSD: mansearch.c,v 1.55 2017/04/18 15:04:35 schwarze Exp $ */
 /*
  * Copyright (c) 2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2013-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -669,6 +669,12 @@ exprterm(const struct mansearch *search, int argc, char *argv[], int *argi)
                return e;
        }
 
+       if (strcmp("-i", argv[*argi]) == 0 && *argi + 1 < argc) {
+               cs = 0;
+               ++*argi;
+       } else
+               cs = 1;
+
        e = mandoc_calloc(1, sizeof(*e));
        e->type = EXPR_TERM;
        e->bits = 0;
@@ -687,7 +693,6 @@ exprterm(const struct mansearch *search, int argc, char *argv[], int *argi)
         * If needed, request regular expression handling.
         */
 
-       cs = 1;
        if (search->argmode == ARG_WORD) {
                e->bits = TYPE_Nm;
                e->match.type = DBM_REGEX;