fix(api): nvim_buf_get_text regression (#21071)

1 files changed, 7 insertions, 7 deletions

diff --git a/src/nvim/api/buffer.c b/src/nvim/api/buffer.c
index 1101689391..0a31286df7 100644
--- a/src/nvim/api/buffer.c
+++ b/src/nvim/api/buffer.c
@@ -311,7 +311,7 @@ ArrayOf(String) nvim_buf_get_lines(uint64_t channel_id,
 
   init_line_array(lstate, &rv, size);
 
-  if (!buf_collect_lines(buf, size, (linenr_T)start, (channel_id != VIML_INTERNAL_CALL), &rv,
+  if (!buf_collect_lines(buf, size, (linenr_T)start, 0, (channel_id != VIML_INTERNAL_CALL), &rv,
                          lstate, err)) {
     goto end;
   }
@@ -857,9 +857,8 @@ ArrayOf(String) nvim_buf_get_text(uint64_t channel_id, Buffer buffer,
   }
 
   if (size > 2) {
-    Array tmp = ARRAY_DICT_INIT;
-    tmp.items = &rv.items[1];
-    if (!buf_collect_lines(buf, size - 2, (linenr_T)start_row + 1, replace_nl, &tmp, lstate, err)) {
+    if (!buf_collect_lines(buf, size - 2, (linenr_T)start_row + 1, 1, replace_nl, &rv, lstate,
+                           err)) {
       goto end;
     }
   }
@@ -1464,12 +1463,13 @@ static void push_linestr(lua_State *lstate, Array *a, const char *s, size_t len,
 /// @param n Number of lines to collect
 /// @param replace_nl Replace newlines ("\n") with NUL
 /// @param start Line number to start from
+/// @param start_idx First index to push to
 /// @param[out] l If not NULL, Lines are copied here
 /// @param[out] lstate If not NULL, Lines are pushed into a table onto the stack
 /// @param err[out] Error, if any
 /// @return true unless `err` was set
-bool buf_collect_lines(buf_T *buf, size_t n, linenr_T start, bool replace_nl, Array *l,
-                       lua_State *lstate, Error *err)
+bool buf_collect_lines(buf_T *buf, size_t n, linenr_T start, int start_idx, bool replace_nl,
+                       Array *l, lua_State *lstate, Error *err)
 {
   for (size_t i = 0; i < n; i++) {
     linenr_T lnum = start + (linenr_T)i;
@@ -1482,7 +1482,7 @@ bool buf_collect_lines(buf_T *buf, size_t n, linenr_T start, bool replace_nl, Ar
     }
 
     char *bufstr = ml_get_buf(buf, lnum, false);
-    push_linestr(lstate, l, bufstr, strlen(bufstr), (int)i, replace_nl);
+    push_linestr(lstate, l, bufstr, strlen(bufstr), start_idx + (int)i, replace_nl);
   }
 
   return true;