fix: parent dirs are created for acwrite bufs

lua/sos/commands.lua

@@ -65,8 +65,16 @@ function M.resolve_bufspec(info)
     local arg = info.fargs[1]
 
     -- Use `[$]` for `$`, otherwise we'll get highest bufnr.
-    buf = vim.fn.bufnr(arg == '$' and '[$]' or arg or '')
-    if buf < 1 then errmsg 'argument matched none or multiple buffers' end
+    if arg == '$' then
+      buf = vim.fn.bufnr '^[$]$'
+      buf = buf > 0 and buf or vim.fn.bufnr '*[$]*'
+    else
+      buf = vim.fn.bufnr(arg or '')
+    end
+
+    if buf < 1 then
+      return errmsg 'argument matched none or multiple buffers'
+    end
   end
 
   return buf

lua/sos/impl.lua

@@ -111,8 +111,10 @@ function M.write_buf_if_needed(buf)
     return true
   end
 
-  local buftype = vim.bo[buf].bt
+  local scheme = util.uri_scheme(name)
+  if scheme then return write_buf(buf) end
 
+  local buftype = vim.bo[buf].bt
   if buftype == 'acwrite' then
     return write_buf(buf)
   elseif buftype == '' then

lua/sos/util.lua

@@ -39,4 +39,12 @@ function M.getbufs()
   return bufs
 end
 
+---@param path string
+---@return string? scheme
+function M.uri_scheme(path)
+  -- Not very strict on purpose
+  local scheme, _rest = path:match '^[%s%c%z]*(%w[%-_%w+.]+):+(/*)'
+  return scheme
+end
+
 return M