sed: accept s///i as a synonym for s///I ("ignore case")

Signed-off-by: David A. Wheeler <dwheeler@dwheeler.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/editors/sed.c b/editors/sed.c
index 31fb103ec..e18e48ab5 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -381,7 +381,7 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, const char *substr)
 
         /*
          * A substitution command should look something like this:
-         *    s/match/replace/ #gIpw
+         *    s/match/replace/ #giIpw
          *    ||     |        |||
          *    mandatory       optional
          */
@@ -429,6 +429,7 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, const char *substr)
                         break;
                 }
                 /* Ignore case (gnu exension) */
+                case 'i':
                 case 'I':
                         cflags |= REG_ICASE;
                         break;