Merged open devdocs improvement

Author: leafOfTree

README.md

@@ -75,6 +75,7 @@ Set global variable to `1` to enable or `0` to disable. Ex:
 | g:vim_svelte_plugin_has_init_indent    | Initially indent one tab inside `style/script` tags.                                                                                                                        | 1       |
 | g:vim_svelte_plugin_use_foldexpr       | Enable builtin `foldexpr` foldmethod.                                                                                                                                       | 0       |
 | g:vim_svelte_plugin_debug              | Echo debug messages in `messages` list. Useful to debug if unexpected indents occur.                                                                                        | 0       |
+| g:vim_svelte_plugin_open_devdocs       | Key mapping to search documentation on https://devdocs.io for the word under the cursor or selected | `<F1>`       |
 
 \*: Vim may be slow if the feature is enabled. Find a balance between syntax highlight and speed. By the way, custom syntax can be added in `~/.vim/syntax` or `$VIM/vimfiles/syntax`.
 

ftplugin/svelte.vim

@@ -29,12 +29,42 @@ if executable('npx') && !empty(globpath(&runtimepath, 'compiler/svelte-check.vim
   compiler svelte-check
   let b:undo_ftplugin .= " | compiler make"
 endif
-if exists(':Open') == 2
-  " let &keywordprg = ':Open https://devdocs.io/\#q='..&filetype
-  nnoremap <buffer> <expr> <F1> '<cmd>Open https://devdocs.io/\#q='..&filetype..' '..expand('<cword>')..'<CR>'
-  let b:undo_ftplugin .= " | exe 'nunmap <buffer> <F1>'"
-  if exists('*getregion')
-    vnoremap <buffer> <expr> <F1> '<cmd>Open https://devdocs.io/\#q='..&filetype..' '..join(getregion(getpos('v'), getpos('.')))..'<CR>'
-    let b:undo_ftplugin .= " | exe 'vunmap <buffer> <F1>'"
+
+if !exists(':Open')
+  function! s:Open(arg)
+    let cmd = ''
+    if has('mac')
+      let cmd = 'open'
+    endif
+    if has('linux')
+      let cmd = 'xdg-open'
+    endif
+    if has('win32')
+      let cmd = 'start'
+    endif
+  
+    execute '!'.cmd.' "'.a:arg.'"'
+  endfunction
+
+  command -nargs=1 Open call <SID>Open(<q-args>)
+endif
+
+function! s:OpenDevDocs() range
+  if mode() =~# "[vV\<C-v>]" && exists('*getregion')
+    let text = join(getregion(getpos('v'), getpos('.')))
+  else
+    let text = expand('<cword>')
   endif
+  
+  " Remove special symbols
+  let clean_text = substitute(text, '[#@$%^&*(){}[\]<>]', '', 'g')
+  
+  let filetype = &filetype
+  execute 'Open https://devdocs.io?q='.filetype.' '.clean_text
+endfunction
+
+let s:open_devdocs = svelte#GetConfig('open_devdocs', '<F1>')
+if !empty(s:open_devdocs)
+  execute 'noremap <buffer> '.s:open_devdocs.' <Cmd>call <SID>OpenDevDocs()<CR>'
+  let b:undo_ftplugin .= " | exe 'unmap <buffer> ".s:open_devdocs."'"
 endif