vis-lua: add file.path property denoting the absolute path to the file

Close #407

2 files changed, 7 insertions, 1 deletions

diff --git a/README.md b/README.md
index 1bdbe6c..ab8d3dc 100644
--- a/README.md
+++ b/README.md
@@ -621,7 +621,8 @@ At this time there exists no API stability guarantees.
    - `insert(pos, data)`
    - `delete(pos, len)` or `delete({start, finish})`
    - `lines_iterator()`
-   - `name`
+   - `name` file path relative to current working directory or `nil` if not yet associated
+   - `path` absolute path or `nil` if not yet associated
    - `lines[0..#lines+1]` array giving read/write access to lines
    - `newlines` type of newlines either `"lf"` or `"crlf"`
    - `size` current file size in bytes
diff --git a/vis-lua.c b/vis-lua.c
index 0c13d2d..f533b41 100644
--- a/vis-lua.c
+++ b/vis-lua.c
@@ -1096,6 +1096,11 @@ static int file_index(lua_State *L) {
 			return 1;
 		}
 
+		if (strcmp(key, "path") == 0) {
+			lua_pushstring(L, file->name);
+			return 1;
+		}
+
 		if (strcmp(key, "lines") == 0) {
 			obj_ref_new(L, file->text, "vis.file.text");
 			return 1;