fix(lua): vim.validate `message` param #33675

Problem:
vim.validate does not handle `message` param.

Solution:
Add the missing logic.

1 files changed, 8 insertions, 8 deletions

diff --git a/runtime/lua/vim/shared.lua b/runtime/lua/vim/shared.lua
index 982cfbdf81..fa66e18ac4 100644
--- a/runtime/lua/vim/shared.lua
+++ b/runtime/lua/vim/shared.lua
@@ -865,7 +865,7 @@ do
   --- @param param_name string
   --- @param val any
   --- @param validator vim.validate.Validator
-  --- @param message? string
+  --- @param message? string "Expected" message
   --- @param allow_alias? boolean Allow short type names: 'n', 's', 't', 'b', 'f', 'c'
   --- @return string?
   local function is_valid(param_name, val, validator, message, allow_alias)
@@ -877,18 +877,18 @@ do
       end
 
       if not is_type(val, expected) then
-        return string.format('%s: expected %s, got %s', param_name, expected, type(val))
+        return ('%s: expected %s, got %s'):format(param_name, message or expected, type(val))
       end
     elseif vim.is_callable(validator) then
       -- Check user-provided validation function
       local valid, opt_msg = validator(val)
       if not valid then
-        local err_msg =
-          string.format('%s: expected %s, got %s', param_name, message or '?', tostring(val))
-
-        if opt_msg then
-          err_msg = string.format('%s. Info: %s', err_msg, opt_msg)
-        end
+        local err_msg = ('%s: expected %s, got %s'):format(
+          param_name,
+          message or '?',
+          tostring(val)
+        )
+        err_msg = opt_msg and ('%s. Info: %s'):format(err_msg, opt_msg) or err_msg
 
         return err_msg
       end