diff options
Diffstat (limited to 'src/nvim/lua/stdlib.c')
| -rw-r--r-- | src/nvim/lua/stdlib.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/nvim/lua/stdlib.c b/src/nvim/lua/stdlib.c index 5fea1ba5d8..8f58fd1a1a 100644 --- a/src/nvim/lua/stdlib.c +++ b/src/nvim/lua/stdlib.c @@ -226,11 +226,12 @@ static int nlua_str_utf_start(lua_State *const lstate) FUNC_ATTR_NONNULL_ALL size_t s1_len; const char *s1 = luaL_checklstring(lstate, 1, &s1_len); ptrdiff_t offset = luaL_checkinteger(lstate, 2); - if (offset < 0 || offset > (intptr_t)s1_len) { + if (offset <= 0 || offset > (intptr_t)s1_len) { return luaL_error(lstate, "index out of range"); } - int head_offset = -utf_cp_head_off(s1, s1 + offset - 1); - lua_pushinteger(lstate, head_offset); + size_t const off = (size_t)(offset - 1); + int head_off = -utf_cp_bounds_len(s1, s1 + off, (int)(s1_len - off)).begin_off; + lua_pushinteger(lstate, head_off); return 1; } @@ -246,11 +247,12 @@ static int nlua_str_utf_end(lua_State *const lstate) FUNC_ATTR_NONNULL_ALL size_t s1_len; const char *s1 = luaL_checklstring(lstate, 1, &s1_len); ptrdiff_t offset = luaL_checkinteger(lstate, 2); - if (offset < 0 || offset > (intptr_t)s1_len) { + if (offset <= 0 || offset > (intptr_t)s1_len) { return luaL_error(lstate, "index out of range"); } - int tail_offset = utf_cp_tail_off(s1, s1 + offset - 1); - lua_pushinteger(lstate, tail_offset); + size_t const off = (size_t)(offset - 1); + int tail_off = utf_cp_bounds_len(s1, s1 + off, (int)(s1_len - off)).end_off - 1; + lua_pushinteger(lstate, tail_off); return 1; } |