vim: Import v8.2.3394

* 8.2.3394: filler lines are wrong when changing text in diff mode
* 8.2.3393: escaping for fish shell is skipping some characters
* 8.2.3392: augroup completion escapes regexp pattern characters
* 8.2.3391: crash with combination of 'linebreak' and other options
* 8.2.3390: included xdiff code is outdated
* 8.2.3389: cannot stop insert mode completion without side effects

gitlog.txt

@@ -1 +1 @@
-* [8.2.3391](https://github.com/vim/vim/commit/20e0c3d27bda770542c1c0e4c81fd6443c12f3a6): crash with combination of 'linebreak' and other options\n* [8.2.3390](https://github.com/vim/vim/commit/ba02e4720f863fdb456e7023520f0a354eec0dcf): included xdiff code is outdated\n* [8.2.3389](https://github.com/vim/vim/commit/dca29d9cf46cd1d4d4519211c7af78b6b1c56960): cannot stop insert mode completion without side effects
+* [8.2.3394](https://github.com/vim/vim/commit/04626c243c47af91c2580eaf23e12286180e0e81): filler lines are wrong when changing text in diff mode\n* [8.2.3393](https://github.com/vim/vim/commit/6631597452d4644f485a09e4036d117e5f91de70): escaping for fish shell is skipping some characters\n* [8.2.3392](https://github.com/vim/vim/commit/b4d82e2a8d610c00139a74970df772eece2daf1c): augroup completion escapes regexp pattern characters\n* [8.2.3391](https://github.com/vim/vim/commit/20e0c3d27bda770542c1c0e4c81fd6443c12f3a6): crash with combination of 'linebreak' and other options\n* [8.2.3390](https://github.com/vim/vim/commit/ba02e4720f863fdb456e7023520f0a354eec0dcf): included xdiff code is outdated\n* [8.2.3389](https://github.com/vim/vim/commit/dca29d9cf46cd1d4d4519211c7af78b6b1c56960): cannot stop insert mode completion without side effects