Support line- & column-based match locations

1 files changed, 20 insertions, 0 deletions

diff --git a/vendor/librune/lib/utf8/u8cbspn.c b/vendor/librune/lib/utf8/u8cbspn.c
new file mode 100644
index 0000000..b51c300
--- /dev/null
+++ b/vendor/librune/lib/utf8/u8cbspn.c
@@ -0,0 +1,20 @@
+#include "utf8.h"
+
+size_t
+u8cbspn(const char8_t *s, size_t n, const rune *p, size_t m)
+{
+	rune ch;
+	size_t k = 0;
+
+	while (u8next(&ch, &s, &n)) {
+		for (size_t i = 0; i < m; i++) {
+			if (p[i] == ch)
+				goto found;
+		}
+
+		k += u8wdth(ch);
+	}
+
+found:
+	return k;
+}