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-rw-r--r--src/nvim/api/buffer.c10
-rw-r--r--test/functional/api/extmark_spec.lua9
2 files changed, 15 insertions, 4 deletions
diff --git a/src/nvim/api/buffer.c b/src/nvim/api/buffer.c
index 6f74ec905c..e77870dcf3 100644
--- a/src/nvim/api/buffer.c
+++ b/src/nvim/api/buffer.c
@@ -1393,15 +1393,17 @@ Integer nvim_buf_set_extmark(Buffer buffer, Integer ns_id,
}
if (col2 >= 0) {
- if (line2 >= 0) {
- len = STRLEN(ml_get_buf(buf, (linenr_T)line2+1, false));
+ if (line2 >= 0 && line2 < buf->b_ml.ml_line_count) {
+ len = STRLEN(ml_get_buf(buf, (linenr_T)line2 + 1, false));
+ } else if (line2 == buf->b_ml.ml_line_count) {
+ // We are trying to add an extmark past final newline
+ len = 0;
} else {
// reuse len from before
line2 = (int)line;
}
if (col2 > (Integer)len) {
- api_set_error(err, kErrorTypeValidation,
- "end_col value outside range");
+ api_set_error(err, kErrorTypeValidation, "end_col value outside range");
goto error;
}
} else if (line2 >= 0) {
diff --git a/test/functional/api/extmark_spec.lua b/test/functional/api/extmark_spec.lua
index a2a188d036..ab913ba4a4 100644
--- a/test/functional/api/extmark_spec.lua
+++ b/test/functional/api/extmark_spec.lua
@@ -100,6 +100,15 @@ describe('API/extmarks', function()
ns2 = request('nvim_create_namespace', "my-fancy-plugin2")
end)
+ it("can end extranges past final newline using end_col = 0", function()
+ set_extmark(ns, marks[1], 0, 0, {
+ end_col = 0,
+ end_line = 1
+ })
+ eq("end_col value outside range",
+ pcall_err(set_extmark, ns, marks[2], 0, 0, { end_col = 1, end_line = 1 }))
+ end)
+
it('adds, updates and deletes marks', function()
local rv = set_extmark(ns, marks[1], positions[1][1], positions[1][2])
eq(marks[1], rv)