More tests and documentation

Also improve find file and switch buffer a bit.

Implement word backward/forward.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/text.c b/src/text.c
index d1a0db3..ec80643 100644
--- a/src/text.c
+++ b/src/text.c
@@ -80,6 +80,11 @@ uint32_t byteidx_to_charidx(struct line *line, uint32_t byte_idx) {
   return utf8_nchars(line->data, byte_idx);
 }
 
+uint32_t text_byteindex_to_col(struct text *text, uint32_t line,
+                               uint32_t byteindex) {
+  return byteidx_to_charidx(&text->lines[line], byteindex);
+}
+
 void insert_at_col(struct line *line, uint32_t col, uint8_t *text, uint32_t len,
                    uint32_t nchars) {