Add support with Go language.

sources_non_forked/vim-go/autoload/go/uri.vim

@@ -0,0 +1,55 @@
+" don't spam the user when Vim is started in Vi compatibility mode
+let s:cpo_save = &cpo
+set cpo&vim
+
+function! go#uri#Encode(value) abort
+    return s:encode(a:value, '[^A-Za-z0-9_.~-]')
+endfunction
+
+function! go#uri#EncodePath(value) abort
+    let l:separator = '/'
+    if go#util#IsWin()
+      let l:separator = '\\'
+    endif
+    return s:encode(a:value, '[^' . l:separator . 'A-Za-z0-9_.~-]')
+endfunction
+
+function! s:encode(value, unreserved)
+    return substitute(
+    \   a:value,
+    \   a:unreserved,
+    \   '\=s:encodechar(submatch(0))',
+    \   'g'
+    \)
+endfunction
+
+function! go#uri#Decode(value) abort
+    return substitute(
+    \   a:value,
+    \   '%\(\x\x\)',
+    \   '\=s:decodehex(submatch(1))',
+    \   'g'
+    \)
+endfunction
+
+function! s:encodechar(value)
+  let l:idx = 0
+  let l:encoded = ''
+  while l:idx < strlen(a:value)
+    let l:byte = strpart(a:value, l:idx, 1)
+    let l:encoded = printf('%s%%%02X', l:encoded, char2nr(l:byte))
+    let l:idx += 1
+  endwhile
+
+  return l:encoded
+endfunction
+
+function! s:decodehex(value)
+  return eval(printf('"\x%s"', a:value))
+endfunction
+
+" restore Vi compatibility settings
+let &cpo = s:cpo_save
+unlet s:cpo_save
+
+" vim: sw=2 ts=2 et