perf: optimize Path.getSortOrderIndex() method. (#1429)

* speedup: Path.getSortOrderIndex() optimisation.

* refactor: remove the redundant new line

---------

Co-authored-by: rzvxa <3788964+rzvxa@users.noreply.github.com>

CHANGELOG.md

@@ -13,6 +13,10 @@
             - Pull Request Title n (PR Author) [PR Number](Link to PR)
 -->
 #### 7.1
+- **.3**:
+    - docs: update FAQ snippets containing quit command. (rzvxa) [#1417](https://github.com/preservim/nerdtree/pull/1417)
+    - feat: jump to bookmark table shortcut. (ds2606, rzvxa) [#1394](https://github.com/preservim/nerdtree/pull/1394)
+    - fix: typo in docs for show file lines setting. (lothardp) [#1426](https://github.com/preservim/nerdtree/pull/1426)
 - **.2**:
     - fix: GetWinNum regex pattern. (rzvxa) [#1409](https://github.com/preservim/nerdtree/pull/1409)
     - fix: session restore for nerdtree buffers. (rzvxa) [#1405](https://github.com/preservim/nerdtree/pull/1405)

README.markdown

@@ -150,6 +150,24 @@ autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists('s:std_in
 
 ### How can I close Vim or a tab automatically when NERDTree is the last window?
 
+Because of the changes in how Vim handles its `autocmd` and layout locking `quit` command is no longer available in Vim9 auto commands, Depending on which version you're running select one of these solutions.
+
+__NeoVim users should be able to choose either one of them!__
+
+#### Vim9
+
+```vim
+" Exit Vim if NERDTree is the only window remaining in the only tab.
+autocmd BufEnter * if tabpagenr('$') == 1 && winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | call feedkeys(":quit\<CR>:\<BS>") | endif
+```
+---
+```vim
+" Close the tab if NERDTree is the only window remaining in it.
+autocmd BufEnter * if winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | call feedkeys(":quit\<CR>:\<BS>") | endif
+```
+
+#### Vim8 or older
+
 ```vim
 " Exit Vim if NERDTree is the only window remaining in the only tab.
 autocmd BufEnter * if tabpagenr('$') == 1 && winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif

doc/NERDTree.txt

@@ -1073,7 +1073,7 @@ mapping and is useful for drastically shrinking the tree when you are
 navigating to a different part of the tree.
 
 ------------------------------------------------------------------------------
-                                                        *NERDTreeShowFilesLines*
+                                                             *NERDTreeFileLines*
 Values: 0 or 1.
 Default: 0.
 
@@ -1083,8 +1083,8 @@ file.
 This setting can be toggled dynamically, per tree, with the |NERDTree-FL|
 mapping.
 Use one of the follow lines for this setting: >
-    let NERDTreeShowFilesLines=0
+    let NERDTreeFileLines=0
-    let NERDTreeShowFilesLines=1
+    let NERDTreeFileLines=1
 <
 ------------------------------------------------------------------------------
                                                             *NERDTreeShowHidden*

lib/nerdtree/path.vim

@@ -362,9 +362,10 @@ endfunction
 " returns the index of the pattern in g:NERDTreeSortOrder that this path matches
 function! s:Path.getSortOrderIndex()
     let i = 0
+    let l:lpc = self.getLastPathComponent(1)
     while i < len(g:NERDTreeSortOrder)
         if g:NERDTreeSortOrder[i] !~? '\[\[-\?\(timestamp\|size\|extension\)\]\]' &&
-        \ self.getLastPathComponent(1) =~# g:NERDTreeSortOrder[i]
+        \ l:lpc =~# g:NERDTreeSortOrder[i]
             return i
         endif
         let i = i + 1