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-rw-r--r--msed.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/msed.c b/msed.c
index 7bb0b82..c545278 100644
--- a/msed.c
+++ b/msed.c
@@ -138,7 +138,7 @@ sed(char *file)
 					if (*s == ':')
 						*s = '|';
 				int rv;
-				if ((rv = regcomp(&headerrx, headersel, REG_EXTENDED)) != 0) {
+				if ((rv = regcomp(&headerrx, headersel, REG_EXTENDED | REG_ICASE)) != 0) {
 					char buf[100];
 					regerror(rv, &headerrx, buf, sizeof buf);
 					fprintf(stderr, "msed: %s\n", buf);