Support scheme mapping overwrite

Author: lambdalisue

autoload/fern/internal/scheme.vim

@@ -11,13 +11,17 @@ function! fern#internal#scheme#provider_new(scheme) abort
 endfunction
 
 function! fern#internal#scheme#mapping_init(scheme, disable_default_mappings) abort
-  return call('s:call', [a:scheme, 'mapping#init', a:disable_default_mappings])
+  let mappings = get(g:, printf('fern#scheme#%s#mapping#mappings', a:scheme), [])
+  for name in mappings
+    call s:call(a:scheme, printf('mapping#%s#init', name), a:disable_default_mappings)
+  endfor
+  return s:call(a:scheme, 'mapping#init', a:disable_default_mappings)
 endfunction
 
 function! fern#internal#scheme#complete_url(scheme, arglead, cmdline, cursorpos) abort
-  return call('s:call', [a:scheme, 'complete#url', a:arglead, a:cmdline, a:cursorpos])
+  return s:call(a:scheme, 'complete#url', a:arglead, a:cmdline, a:cursorpos)
 endfunction
 
 function! fern#internal#scheme#complete_reveal(scheme, arglead, cmdline, cursorpos) abort
-  return call('s:call', [a:scheme, 'complete#reveal', a:arglead, a:cmdline, a:cursorpos])
+  return s:call(a:scheme, 'complete#reveal', a:arglead, a:cmdline, a:cursorpos)
 endfunction

autoload/fern/scheme/dict/mapping.vim

@@ -2,9 +2,6 @@ let s:Prompt = vital#fern#import('Prompt')
 let s:Promise = vital#fern#import('Async.Promise')
 
 function! fern#scheme#dict#mapping#init(disable_default_mappings) abort
-  call fern#scheme#dict#mapping#clipboard#init(a:disable_default_mappings)
-  call fern#scheme#dict#mapping#rename#init(a:disable_default_mappings)
-
   nnoremap <buffer><silent> <Plug>(fern-action-new-leaf)   :<C-u>call <SID>call('new_leaf')<CR>
   nnoremap <buffer><silent> <Plug>(fern-action-new-branch) :<C-u>call <SID>call('new_branch')<CR>
   nnoremap <buffer><silent> <Plug>(fern-action-copy)       :<C-u>call <SID>call('copy')<CR>
@@ -204,3 +201,8 @@ function! s:map_edit_leaf(helper) abort
         \.then({ -> a:helper.async.reload_node(root.__key) })
         \.then({ -> a:helper.async.redraw() })
 endfunction
+
+let g:fern#scheme#dict#mapping#mappings = get(g:, 'fern#scheme#dict#mapping#mappings', [
+      \ 'clipboard',
+      \ 'rename',
+      \])

autoload/fern/scheme/file/mapping.vim

@@ -2,13 +2,6 @@ let s:Promise = vital#fern#import('Async.Promise')
 let s:Prompt = vital#fern#import('Prompt')
 
 function! fern#scheme#file#mapping#init(disable_default_mappings) abort
-  call fern#scheme#file#mapping#cd#init(a:disable_default_mappings)
-  call fern#scheme#file#mapping#system#init(a:disable_default_mappings)
-  call fern#scheme#file#mapping#clipboard#init(a:disable_default_mappings)
-  call fern#scheme#file#mapping#rename#init(a:disable_default_mappings)
-  call fern#scheme#file#mapping#terminal#init(a:disable_default_mappings)
-  call fern#scheme#file#mapping#grep#init(a:disable_default_mappings)
-
   nnoremap <buffer><silent> <Plug>(fern-action-new-file) :<C-u>call <SID>call('new_file')<CR>
   nnoremap <buffer><silent> <Plug>(fern-action-new-dir)  :<C-u>call <SID>call('new_dir')<CR>
   nnoremap <buffer><silent> <Plug>(fern-action-copy)     :<C-u>call <SID>call('copy')<CR>
@@ -198,3 +191,12 @@ function! s:map_remove(helper) abort
         \.then({ -> a:helper.async.redraw() })
         \.then({ -> a:helper.sync.echo(printf('%d items are removed', len(ps))) })
 endfunction
+
+let g:fern#scheme#file#mapping#mappings = get(g:, 'fern#scheme#file#mapping#mappings', [
+      \ 'cd',
+      \ 'clipboard',
+      \ 'grep',
+      \ 'rename',
+      \ 'system',
+      \ 'terminal',
+      \])