vim: Import v9.1.0821

* 9.1.0821: 'findexpr' completion doesn't set v:fname to cmdline argument
* 9.1.0820: tests: Mac OS tests are too flaky
* runtime(awk): Highlight more awk comments in syntax script
* runtime(netrw): add missing change for s:redir()
* 9.1.0819: tests: using findexpr and imported func not tested
* runtime(netrw): improve netrw's open-handling further
* runtime(netrw): fix syntax error in netrwPlugin.vim

Author: github-actions[bot]

gitlog.txt

@@ -1 +1 @@
-* [runtime(netrw): simplify gx file handling](https://github.com/vim/vim/commit/3d7e567ea7392e43a90a6ffb3cd49b71a7b59d1a)\n* [9.1.0818](https://github.com/vim/vim/commit/a04003a929e443813c8060242e9809135b134a4c): some global functions are only used in single files\n* [9.1.0817](https://github.com/vim/vim/commit/8f1d09828a92469a7fa824a8653bf689a7864d21): termdebug: cannot evaluate expr in a popup\n* [runtime(defaults): Detect putty terminal and switch to dark background](https://github.com/vim/vim/commit/2abec431e1ab5f4f6e21c2bb490241732622a8c5)\n* [9.1.0816](https://github.com/vim/vim/commit/ce35ee89864784930d16392d5fd5dea1fab17f9c): tests: not clear what tests cause asan failures\n* [runtime(doc): Remove some completed items from todo.txt](https://github.com/vim/vim/commit/912fbaf6e8f50db44ece9b3f3a1babe21e77fa49)\n* [9.1.0815](https://github.com/vim/vim/commit/91d26aa338224fd0370c75fac9dc062cdcd18470): "above" virtual text causes wrong 'colorcolumn' position
+* [9.1.0821](https://github.com/vim/vim/commit/20e045f78148c0ef0143c33ffe686fee72d29376): 'findexpr' completion doesn't set v:fname to cmdline argument\n* [9.1.0820](https://github.com/vim/vim/commit/baab7c08653a4e1b7227d6426d96cab030ccf9e8): tests: Mac OS tests are too flaky\n* [runtime(awk): Highlight more awk comments in syntax script](https://github.com/vim/vim/commit/1e2007e6437da2696d0239d487720eb51e94e15f)\n* [runtime(netrw): add missing change for s:redir()](https://github.com/vim/vim/commit/d69ffbe4bc2196c4fc2b9377167a9a194213a686)\n* [9.1.0819](https://github.com/vim/vim/commit/bdac2ef6fe3bf286dbe61f9511ba3e2347a9da2a): tests: using findexpr and imported func not tested\n* [runtime(netrw): improve netrw's open-handling further](https://github.com/vim/vim/commit/70197885a8957071e4ab6816141ce6e8026635c6)\n* [runtime(netrw): fix syntax error in netrwPlugin.vim](https://github.com/vim/vim/commit/7c96776729a671b7c5f6be81bc29d860920ea1c1)