vim-patch:9.1.0009: Cannot easily get the list of matches (#27028)

Problem:  Cannot easily get the list of matches
Solution: Add the matchstrlist() and matchbufline() Vim script
          functions (Yegappan Lakshmanan)

closes: vim/vim#13766

Omit CHECK_LIST_MATERIALIZE(): it populates a List with numbers only,
and there is a check for strings below.

f93b1c881a

vim-patch:eb3475df0d92

runtime(doc): Replace non-breaking space with normal space (vim/vim#13868)

eb3475df0d

Co-authored-by: Yegappan Lakshmanan <4298407+yegappan@users.noreply.github.com>

src/nvim/quickfix.c

@@ -6916,7 +6916,7 @@ static int cbuffer_process_args(exarg_T *eap, buf_T **bufp, linenr_T *line1, lin
   }
 
   if (buf->b_ml.ml_mfp == NULL) {
-    emsg(_("E681: Buffer is not loaded"));
+    emsg(_(e_buffer_is_not_loaded));
     return FAIL;
   }