feat(completion): truncate arguments for callSnippet

The callSnippet always expands all the optional arguments and variable
argument that is annoying.
To truncate optional arguments and variable arguments help users more
frequently use `callSnippet`. We already have the label and signature to get
the total arguments.

This behavior is like tsserver.

1 files changed, 4 insertions, 1 deletions

diff --git a/script/core/completion/completion.lua b/script/core/completion/completion.lua
index 30df047c..05b035af 100644
--- a/script/core/completion/completion.lua
+++ b/script/core/completion/completion.lua
@@ -158,11 +158,14 @@ local function buildFunctionSnip(source, value, oop)
     local args = getArg(value, oop)
     local id = 0
     args = args:gsub('[^,]+', function (arg)
+        if arg:match('^%s+[^?]+%?:') or arg:match('^%s+%.%.%.:') then
+            return ''
+        end
         id = id + 1
         return arg:gsub('^(%s*)(.+)', function (sp, word)
             return ('%s${%d:%s}'):format(sp, id, word)
         end)
-    end)
+    end):gsub(',+$', '')
     return ('%s(%s)'):format(name, args)
 end