Check the shortener and playpen urls at calltime

Author: richo

autoload/rust.vim

@@ -363,13 +363,6 @@ endfunction
 " Parts of gist.vim by Yasuhiro Matsumoto <[email protected]> reused
 " gist.vim available under the BSD license, available at
 " http://github.com/mattn/gist-vim
-if !exists('g:rust_playpen_url')
-  let g:rust_playpen_url = 'https://play.rust-lang.org/'
-endif
-if !exists('g:rust_shortener_url')
-  let g:rust_shortener_url = 'https://is.gd/'
-endif
-
 function! s:has_webapi()
   if !exists("*webapi#http#post")
     try
@@ -383,6 +376,17 @@ endfunction
 function! rust#Play(count, line1, line2, ...) abort
   redraw
 
+  if !exists('g:rust_playpen_url')
+    let l:rust_playpen_url = 'https://play.rust-lang.org/'
+  else
+    let l:rust_playpen_url = g:rust_playpen_url
+  endif
+  if !exists('g:rust_shortener_url')
+    let l:rust_shortener_url = 'https://is.gd/'
+  else
+    let l:rust_shortener_url = g:rust_shortener_url
+  endif
+
   if !s:has_webapi()
     echohl ErrorMsg | echomsg ':RustPlay depends on webapi.vim (https://github.com/mattn/webapi-vim)' | echohl None
     return
@@ -399,15 +403,15 @@ function! rust#Play(count, line1, line2, ...) abort
     call setreg('"', save_regcont, save_regtype)
   endif
 
-  let body = g:rust_playpen_url."?code=".webapi#http#encodeURI(content)
+  let body = l:rust_playpen_url."?code=".webapi#http#encodeURI(content)
 
   if strlen(body) > 5000
     echohl ErrorMsg | echomsg 'Buffer too large, max 5000 encoded characters ('.strlen(body).')' | echohl None
     return
   endif
 
   let payload = "format=simple&url=".webapi#http#encodeURI(body)
-  let res = webapi#http#post(g:rust_shortener_url.'create.php', payload, {})
+  let res = webapi#http#post(l:rust_shortener_url.'create.php', payload, {})
   let url = res.content
   redraw | echomsg 'Done: '.url
 endfunction