Support g:scratch_buffer_file_pattern & Fix test failing

README.md

@@ -75,10 +75,22 @@ Compared to scratch.vim, vim-scratch-buffer provides these additional features:
     - See `:help :ScratchBufferOpen` and `:help :ScratchBufferOpenFile`
 
 - Customization options
-    - Specify filetype for syntax highlighting
+    - Specify filetype for syntax highlighting, for `:QuickRun`, and for etc
     - Choose opening method (`:split` or `:vsplit`)
     - Control buffer height/width
-    - Configurable auto-hiding behavior
+    - Configurable auto-hiding behavior: [scratch.vim compatibility](#sparkles-scratchvim-compatibility)
+    - Customize buffer file locations:
+      ```vim
+      " Configure different paths for temporary and persistent buffers
+      let g:scratch_buffer_file_pattern = #{
+        \ when_tmp_buffer: '/tmp/scratch-tmp-%d',      " For :ScratchBufferOpen
+        \ when_file_buffer: expand('~/scratch/%d'),    " For :ScratchBufferOpenFile
+      \ }
+      " This is useful if you want to keep a file buffer directory
+      " (`~/tmp` in the above case) with `.prettier`, etc.
+      ```
+
+Please also see [doc/vim-scratch-buffer.txt](./doc/vim-scratch-buffer.txt) for other functions.
 
 ### :gear: Detailed Usage
 
@@ -122,6 +134,8 @@ Compared to scratch.vim, vim-scratch-buffer provides these additional features:
 :ScratchBufferClean
 ```
 
+Please also see [doc/vim-scratch-buffer.txt](./doc/vim-scratch-buffer.txt) for other usage.
+
 ## :keyboard: Default Keymappings
 
 When `g:scratch_buffer_use_default_keymappings` is enabled (default: `v:false`), the following keymappings are available:
@@ -152,7 +166,7 @@ nnoremap <silent> <leader>s <Cmd>ScratchBufferOpen<CR>
 nnoremap <silent> <leader>S <Cmd>ScratchBufferOpenFile<CR>
 ```
 
-## :sparkles: scratch.vim Compatibility
+## :sparkles: scratch.vim compatibility
 
 To make the plugin behave like scratch.vim, you can enable automatic buffer hiding!
 When enabled, scratch buffers will automatically hide when you leave the window.

autoload/scratch_buffer.vim

@@ -1,6 +1,3 @@
-scriptencoding utf-8
-scriptversion 3
-
 " Params:
 " - (first argument) {string | undefined} (Optional)
 "     - File extension without '.', e.g., 'md', 'ts', or 'sh'
@@ -10,29 +7,51 @@ scriptversion 3
 " - (third argument) {number | undefined} (Optional) A positive number to `:resize buffer_size`
 function! scratch_buffer#open(opening_next_fresh_buffer, ...) abort
   return s:open_buffer(#{
-    \ opening_temporary_buffer: v:true,
+    \ opening_as_tmp_buffer: v:true,
     \ opening_next_fresh_buffer: a:opening_next_fresh_buffer,
     \ args: a:000,
   \ })
 endfunction
 
 function! scratch_buffer#open_file(opening_next_fresh_buffer, ...) abort
   return s:open_buffer(#{
-    \ opening_temporary_buffer: v:false,
+    \ opening_as_tmp_buffer: v:false,
     \ opening_next_fresh_buffer: a:opening_next_fresh_buffer,
     \ args: a:000,
   \ })
 endfunction
 
+" Initialize augroup in case options were updated
+function! scratch_buffer#initialize_augroup() abort
+  augroup VimScratchBuffer
+    autocmd!
+    execute
+      \ 'autocmd'
+      \ 'TextChanged'
+      \ substitute(g:scratch_buffer_file_pattern.when_file_buffer, '%d', '*', '')
+      \ 'call scratch_buffer#autocmd#save_file_buffer_if_enabled()'
+    execute
+      \ 'autocmd'
+      \ 'WinLeave'
+      \ substitute(g:scratch_buffer_file_pattern.when_tmp_buffer, '%d', '*', '')
+      \ 'call scratch_buffer#autocmd#hide_buffer_if_enabled()'
+    execute
+      \ 'autocmd'
+      \ 'WinLeave'
+      \ substitute(g:scratch_buffer_file_pattern.when_file_buffer, '%d', '*', '')
+      \ 'call scratch_buffer#autocmd#hide_buffer_if_enabled()'
+  augroup END
+endfunction
+
 function! s:open_buffer(options) abort
   const args = a:options.args
-  const opening_temporary_buffer = a:options.opening_temporary_buffer
+  const opening_as_tmp_buffer = a:options.opening_as_tmp_buffer
   const opening_next_fresh_buffer = a:options.opening_next_fresh_buffer
 
+  call scratch_buffer#initialize_augroup()
+
   const file_ext = get(args, 0, g:scratch_buffer_default_file_ext)
-  const file_pattern = (file_ext ==# '--no-file-ext' || file_ext ==# '')
-    \ ? $'{g:scratch_buffer_tmp_file_pattern}'
-    \ : $'{g:scratch_buffer_tmp_file_pattern}.{file_ext}'
+  const file_pattern = s:get_file_pattern(opening_as_tmp_buffer, file_ext)
 
   const index = s:find_current_index(file_pattern) + (opening_next_fresh_buffer ? 1 : 0)
   const file_name = expand(printf(file_pattern, index))
@@ -42,7 +61,7 @@ function! s:open_buffer(options) abort
 
   execute 'silent' open_method file_name
 
-  if opening_temporary_buffer
+  if opening_as_tmp_buffer
     setlocal buftype=nofile
     setlocal bufhidden=hide
   else
@@ -55,6 +74,15 @@ function! s:open_buffer(options) abort
   endif
 endfunction
 
+function! s:get_file_pattern(opening_as_tmp_buffer, file_ext) abort
+  const type = a:opening_as_tmp_buffer
+    \ ? 'when_tmp_buffer'
+    \ : 'when_file_buffer'
+  return a:file_ext ==# '--no-file-ext' || a:file_ext ==# ''
+    \ ? $'{g:scratch_buffer_file_pattern[type]}'
+    \ : $'{g:scratch_buffer_file_pattern[type]}.{a:file_ext}'
+endfunction
+
 function! s:find_current_index(pattern) abort
   " NOTE: `[]->max()` returns 0
   const max_buffer_index = scratch_buffer#helper#get_all_buffer_names()
@@ -72,23 +100,24 @@ function! s:extract_index_from_name(name, pattern) abort
   return len(matches) > 1 ? str2nr(matches[1]) : v:null
 endfunction
 
-function! s:find_next_index(pattern) abort
-  return  + 1
-endfunction
-
 " Clean up all scratch buffers and files
 function! scratch_buffer#clean() abort
-  const files = glob(
-    \ substitute(g:scratch_buffer_tmp_file_pattern, '%d', '*', ''),
+  const persistent_files = glob(
+    \ substitute(g:scratch_buffer_file_pattern.when_file_buffer, '%d', '*', ''),
     \ v:false,
     \ v:true,
   \ )
-  for file in files
-    call delete(file)
+  for persistent_file in persistent_files
+    call delete(persistent_file)
   endfor
 
+  call s:wipe_buffers(g:scratch_buffer_file_pattern.when_tmp_buffer)
+  call s:wipe_buffers(g:scratch_buffer_file_pattern.when_file_buffer)
+endfunction
+
+function! s:wipe_buffers(file_pattern) abort
   const scratch_prefix = '^' .. substitute(
-    \ g:scratch_buffer_tmp_file_pattern,
+    \ a:file_pattern,
     \ '%d',
     \ '',
     \ '',

autoload/scratch_buffer/autocmd.vim

@@ -1,21 +1,10 @@
-scriptencoding utf-8
-scriptversion 3
-
-function! s:is_scratch_buffer() abort
-  return expand('%:p') =~# substitute(g:scratch_buffer_tmp_file_pattern, '%d', '*', '')
-endfunction
-
-function! scratch_buffer#autocmd#save_file_buffer() abort
-  if g:scratch_buffer_auto_save_file_buffer && (&buftype !=# 'nofile') && s:is_scratch_buffer()
-    silent! write
+function! scratch_buffer#autocmd#save_file_buffer_if_enabled() abort
+  if g:scratch_buffer_auto_save_file_buffer && (&buftype !=# 'nofile')
+    silent write
   endif
 endfunction
 
-function! scratch_buffer#autocmd#hide_buffer() abort
-  if !s:is_scratch_buffer()
-    return
-  endif
-
+function! scratch_buffer#autocmd#hide_buffer_if_enabled() abort
   if (&buftype ==# 'nofile') && g:scratch_buffer_auto_hide_buffer.when_tmp_buffer
     quit
     return