sync with Plan 9

1 files changed, 19 insertions, 0 deletions

diff --git a/lib9/runestrchr.c b/lib9/runestrchr.c
new file mode 100644
index 00000000..f7bc4198
--- /dev/null
+++ b/lib9/runestrchr.c
@@ -0,0 +1,19 @@
+#include "lib9.h"
+
+Rune*
+runestrchr(Rune *s, Rune c)
+{
+	Rune c0 = c;
+	Rune c1;
+
+	if(c == 0) {
+		while(*s++)
+			;
+		return s-1;
+	}
+
+	while(c1 = *s++)
+		if(c1 == c0)
+			return s-1;
+	return 0;
+}