Check if it's a valid URL, otherwise (optional) fallback to investigate.vim

README.md

@@ -12,6 +12,9 @@ Here's a quick example:
 
 ```vim
 " OpenUrl.nvim binding
-nnoremap <leader>e :call OpenUrl#UnderCursor()<CR>
+nnoremap <leader>q :call OpenUrl#UnderCursor()<CR>
+
+" Use keith/investigate.vim as a fallback, if it's not an URL
+let g:loaded_OpenUrl_DarkInvestigate = 1
 ```
 

plugin/OpenUrl.vim

@@ -5,17 +5,24 @@ let g:loaded_OpenUrl = 1
 
 function! OpenUrl#UnderCursor()
         let s:url = OpenUrl#GetWordUnderCursor()
-        if has('win16') || has('win32') || has('win64')
-          exe '!start cmd /cstart /b '.s:url.''
-        elseif has('mac') || has('macunix') || has('gui_macvim')
-          exe 'silent !open "'.s:url.'"'
+        let s:is_url = OpenUrl#IsUrl(s:url)
+        if s:is_url == 1
+                call OpenUrl#WithDefaultBrowser(s:url)
         else
-          exe 'silent !xdg-open "'.s:url.'"'
+                call OpenUrl#PassToDarkInvestigate()
+        endif
+endfunction
+
+function! OpenUrl#PassToDarkInvestigate()
+        let s:url = OpenUrl#GetWordUnderCursor()
+        if exists('g:loaded_OpenUrl_DarkInvestigate')
+                call investigate#Investigate()
+        else
+                echo 'No valid URL found: '.s:url
         endif
-        redraw!
 endfunction
 
-function! OpenUrl#Open(url)
+function! OpenUrl#WithDefaultBrowser(url)
         if has('win16') || has('win32') || has('win64')
                 exe '!start cmd /cstart /b '.a:url.''
         elseif has('mac') || has('macunix') || has('gui_macvim')
@@ -36,6 +43,15 @@ function! OpenUrl#OpenWith(app, file)
         endif
 endfunction
 
+function! OpenUrl#IsUrl(str)
+        let s:url = matchstr(a:str, '[a-z]*:\/\/[^ >,;]*')
+        if empty(s:url) 
+                return 0
+        else
+                return 1
+        endif
+endfunction
+
 function! OpenUrl#GetWordUnderCursor()
         return expand("<cWORD>")
 endfunction