13 files changed, 912 insertions, 115 deletions

diff --git a/spec/inputs/try_catch.yue b/spec/inputs/try_catch.yue
index 4e05bc6..f2583b7 100644
--- a/spec/inputs/try_catch.yue
+++ b/spec/inputs/try_catch.yue
@@ -62,6 +62,126 @@ f = ->
         do
                 <- x
                 local tb, a, b, c
-                f = -> try tb.f a, b, c
+                f1 = -> try tb.f a, b, c
+
+        do
+                f1 = -> do
+                        ok, ... = try func!
+                        ...
+
+        do
+                local func
+                a, b, c = try! func!
+        
+        do
+                a, b, c = try! func!
+
+        do
+                a = (try! func!) ?? "default"
+
+        do
+                f try! func!
+        
+        do
+                f try!
+                        print 123
+                        func!
+                catch e
+                        print e
+                        e
 
         nil
+
+do
+        try
+                func 1, 2, 3
+        catch err
+                print err
+
+        try func 1, 2, 3
+        catch err
+                print err
+
+        try
+                print "trying"
+                func 1, 2, 3
+
+        do
+                success, result = try
+                        func 1, 2, 3
+                catch err
+                        print err
+
+                success, result = try func 1, 2, 3
+
+        tb = {}
+
+        try tb.func
+        try tb.func!
+        try tb.func()
+        try (tb.func!)
+        try (tb\func(1, 2, 3))
+
+        try tb.func 1
+        try tb.func(1)
+
+        if (try func 1
+        catch err
+                print err)
+                print "OK"
+
+        if try (func 1)
+        catch err
+                        print err
+                print "OK"
+
+        do
+                if success, result := try func "abc", 123
+                        print result
+
+                success, result = try func "abc", 123
+                catch err
+                        print err
+
+                print result if success, result := try func "abc", 123
+                catch err
+                        print err
+
+        do
+                try
+                        func 1, 2, 3
+
+                try func 1, 2, 3
+
+        do
+                <- x
+                local tb, a, b, c
+                f1 = -> try tb.f a, b, c
+
+        do
+                f1 = -> do
+                        ok, ... = try func!
+                        ...
+
+        do
+                local func
+                a, b, c = try! func!
+        
+        do
+                a, b, c = try! func!
+
+        do
+                a = (try! func!) ?? "default"
+
+        do
+                f try! func!
+        
+        do
+                f try!
+                        print 123
+                        func!
+                catch e
+                        print e
+                        e
+
+nil
diff --git a/spec/outputs/5.1/try_catch.lua b/spec/outputs/5.1/try_catch.lua
index efd92c6..d2b58bc 100644
--- a/spec/outputs/5.1/try_catch.lua
+++ b/spec/outputs/5.1/try_catch.lua
@@ -22,6 +22,43 @@ end
 local _anon_func_7 = function(a, b, c, tb)
         return tb.f(a, b, c)
 end
+local _anon_func_8 = function(_arg_0, ...)
+        local ok = _arg_0
+        return ...
+end
+local _anon_func_10 = function(_arg_0, ...)
+        local _ok_0 = _arg_0
+        if _ok_0 then
+                return ...
+        end
+end
+local _anon_func_9 = function(func, pcall)
+        return _anon_func_10(pcall(func))
+end
+local _anon_func_12 = function(_arg_0, ...)
+        local _ok_0 = _arg_0
+        if _ok_0 then
+                return ...
+        end
+end
+local _anon_func_11 = function(func, pcall)
+        return _anon_func_12(pcall(func))
+end
+local _anon_func_14 = function(_arg_0, ...)
+        local _ok_0 = _arg_0
+        if _ok_0 then
+                return ...
+        end
+end
+local _anon_func_13 = function(func, print, xpcall)
+        return _anon_func_14(xpcall(function()
+                print(123)
+                return func()
+        end, function(e)
+                print(e)
+                return e
+        end))
+end
 local f
 f = function()
         xpcall(function()
@@ -104,10 +141,236 @@ f = function()
         do
                 x(function()
                         local tb, a, b, c
-                        f = function()
+                        local f1
+                        f1 = function()
                                 return pcall(_anon_func_7, a, b, c, tb)
                         end
                 end)
         end
+        do
+                local f1
+                f1 = function()
+                        do
+                                return _anon_func_8(pcall(function()
+                                        return func()
+                                end))
+                        end
+                end
+        end
+        do
+                local func
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(func)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                        return func()
+                end)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a
+                local _exp_0 = (_anon_func_9(func, pcall))
+                if _exp_0 ~= nil then
+                        a = _exp_0
+                else
+                        a = "default"
+                end
+        end
+        do
+                f(_anon_func_11(func, pcall))
+        end
+        do
+                f(_anon_func_13(func, print, xpcall))
+        end
         return nil
 end
+local _anon_func_15 = function(a, b, c, tb)
+        return tb.f(a, b, c)
+end
+local _anon_func_16 = function(_arg_0, ...)
+        local ok = _arg_0
+        return ...
+end
+do
+        xpcall(function()
+                return func(1, 2, 3)
+        end, function(err)
+                return print(err)
+        end)
+        xpcall(function()
+                return func(1, 2, 3)
+        end, function(err)
+                return print(err)
+        end)
+        pcall(function()
+                print("trying")
+                return func(1, 2, 3)
+        end)
+        do
+                local success, result = xpcall(function()
+                        return func(1, 2, 3)
+                end, function(err)
+                        return print(err)
+                end)
+                success, result = pcall(function()
+                        return func(1, 2, 3)
+                end)
+        end
+        local tb = { }
+        pcall(function()
+                return tb.func
+        end)
+        pcall(function()
+                return tb.func()
+        end)
+        pcall(function()
+                return tb.func()
+        end)
+        pcall(function()
+                return (tb.func())
+        end)
+        pcall(function()
+                return (tb:func(1, 2, 3))
+        end)
+        pcall(function()
+                return tb.func(1)
+        end)
+        pcall(function()
+                return tb.func(1)
+        end)
+        if (xpcall(function()
+                return func(1)
+        end, function(err)
+                return print(err)
+        end)) then
+                print("OK")
+        end
+        if xpcall(function()
+                return (func(1))
+        end, function(err)
+                return print(err)
+        end) then
+                print("OK")
+        end
+        do
+                do
+                        local success, result = pcall(function()
+                                return func("abc", 123)
+                        end)
+                        if success then
+                                print(result)
+                        end
+                end
+                local success, result = xpcall(function()
+                        return func("abc", 123)
+                end, function(err)
+                        return print(err)
+                end)
+                success, result = xpcall(function()
+                        return func("abc", 123)
+                end, function(err)
+                        return print(err)
+                end)
+                if success then
+                        print(result)
+                end
+        end
+        do
+                pcall(function()
+                        return func(1, 2, 3)
+                end)
+                pcall(function()
+                        return func(1, 2, 3)
+                end)
+        end
+        do
+                x(function()
+                        local tb, a, b, c
+                        local f1
+                        f1 = function()
+                                return pcall(_anon_func_15, a, b, c, tb)
+                        end
+                end)
+        end
+        do
+                local f1
+                f1 = function()
+                        do
+                                return _anon_func_16(pcall(function()
+                                        return func()
+                                end))
+                        end
+                end
+        end
+        do
+                local func
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(func)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                        return func()
+                end)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a
+                local _exp_0 = ((function()
+                        return (function(_arg_0, ...)
+                                local _ok_0 = _arg_0
+                                if _ok_0 then
+                                        return ...
+                                end
+                        end)(pcall(function()
+                                return func()
+                        end))
+                end)())
+                if _exp_0 ~= nil then
+                        a = _exp_0
+                else
+                        a = "default"
+                end
+        end
+        do
+                f((function()
+                        return (function(_arg_0, ...)
+                                local _ok_0 = _arg_0
+                                if _ok_0 then
+                                        return ...
+                                end
+                        end)(pcall(function()
+                                return func()
+                        end))
+                end)())
+        end
+        do
+                f((function()
+                        return (function(_arg_0, ...)
+                                local _ok_0 = _arg_0
+                                if _ok_0 then
+                                        return ...
+                                end
+                        end)(xpcall(function()
+                                print(123)
+                                return func()
+                        end, function(e)
+                                print(e)
+                                return e
+                        end))
+                end)())
+        end
+end
+return nil
diff --git a/spec/outputs/assign.lua b/spec/outputs/assign.lua
index 162c5a8..89c5f8a 100644
--- a/spec/outputs/assign.lua
+++ b/spec/outputs/assign.lua
@@ -43,10 +43,8 @@ do
         end
 end
 local _anon_func_0 = function(print)
-        do
-                print(123)
-                return { }
-        end
+        print(123)
+        return { }
 end
 return _(function()
         setmetatable(a, _anon_func_0(print))
diff --git a/spec/outputs/codes_from_doc.lua b/spec/outputs/codes_from_doc.lua
index 55be7df..cce0516 100644
--- a/spec/outputs/codes_from_doc.lua
+++ b/spec/outputs/codes_from_doc.lua
@@ -688,6 +688,56 @@ end)
 if success then
         print(result)
 end
+local a, b, c
+do
+        local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                return func()
+        end)
+        if _ok_0 then
+                a, b, c = _ret_0, _ret_1, _ret_2
+        end
+end
+do
+        local _exp_0 = ((function()
+                return (function(_arg_0, ...)
+                        local _ok_0 = _arg_0
+                        if _ok_0 then
+                                return ...
+                        end
+                end)(pcall(function()
+                        return func()
+                end))
+        end)())
+        if _exp_0 ~= nil then
+                a = _exp_0
+        else
+                a = "default"
+        end
+end
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(pcall(function()
+                return func()
+        end))
+end)())
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(xpcall(function()
+                print(123)
+                return func()
+        end, function(e)
+                print(e)
+                return e
+        end))
+end)())
 local a <const> = 123
 local _ <close> = setmetatable({ }, {
         __close = function()
@@ -2909,6 +2959,56 @@ end)
 if success then
         print(result)
 end
+local a, b, c
+do
+        local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                return func()
+        end)
+        if _ok_0 then
+                a, b, c = _ret_0, _ret_1, _ret_2
+        end
+end
+do
+        local _exp_0 = ((function()
+                return (function(_arg_0, ...)
+                        local _ok_0 = _arg_0
+                        if _ok_0 then
+                                return ...
+                        end
+                end)(pcall(function()
+                        return func()
+                end))
+        end)())
+        if _exp_0 ~= nil then
+                a = _exp_0
+        else
+                a = "default"
+        end
+end
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(pcall(function()
+                return func()
+        end))
+end)())
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(xpcall(function()
+                print(123)
+                return func()
+        end, function(e)
+                print(e)
+                return e
+        end))
+end)())
 local a <const> = 123
 local _ <close> = setmetatable({ }, {
         __close = function()
diff --git a/spec/outputs/codes_from_doc_zh.lua b/spec/outputs/codes_from_doc_zh.lua
index 399f8c1..e267709 100644
--- a/spec/outputs/codes_from_doc_zh.lua
+++ b/spec/outputs/codes_from_doc_zh.lua
@@ -688,6 +688,56 @@ end)
 if success then
         print(result)
 end
+local a, b, c
+do
+        local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                return func()
+        end)
+        if _ok_0 then
+                a, b, c = _ret_0, _ret_1, _ret_2
+        end
+end
+do
+        local _exp_0 = ((function()
+                return (function(_arg_0, ...)
+                        local _ok_0 = _arg_0
+                        if _ok_0 then
+                                return ...
+                        end
+                end)(pcall(function()
+                        return func()
+                end))
+        end)())
+        if _exp_0 ~= nil then
+                a = _exp_0
+        else
+                a = "default"
+        end
+end
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(pcall(function()
+                return func()
+        end))
+end)())
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(xpcall(function()
+                print(123)
+                return func()
+        end, function(e)
+                print(e)
+                return e
+        end))
+end)())
 local a <const> = 123
 local _ <close> = setmetatable({ }, {
         __close = function()
@@ -2903,6 +2953,56 @@ end)
 if success then
         print(result)
 end
+local a, b, c
+do
+        local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                return func()
+        end)
+        if _ok_0 then
+                a, b, c = _ret_0, _ret_1, _ret_2
+        end
+end
+do
+        local _exp_0 = ((function()
+                return (function(_arg_0, ...)
+                        local _ok_0 = _arg_0
+                        if _ok_0 then
+                                return ...
+                        end
+                end)(pcall(function()
+                        return func()
+                end))
+        end)())
+        if _exp_0 ~= nil then
+                a = _exp_0
+        else
+                a = "default"
+        end
+end
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(pcall(function()
+                return func()
+        end))
+end)())
+f((function()
+        return (function(_arg_0, ...)
+                local _ok_0 = _arg_0
+                if _ok_0 then
+                        return ...
+                end
+        end)(xpcall(function()
+                print(123)
+                return func()
+        end, function(e)
+                print(e)
+                return e
+        end))
+end)())
 local a <const> = 123
 local _ <close> = setmetatable({ }, {
         __close = function()
diff --git a/spec/outputs/try_catch.lua b/spec/outputs/try_catch.lua
index efd92c6..edb2341 100644
--- a/spec/outputs/try_catch.lua
+++ b/spec/outputs/try_catch.lua
@@ -22,6 +22,44 @@ end
 local _anon_func_7 = function(a, b, c, tb)
         return tb.f(a, b, c)
 end
+local _anon_func_8 = function(_arg_0, ...)
+        local ok = _arg_0
+        return ...
+end
+local _anon_func_10 = function(_arg_0, ...)
+        local _ok_0 = _arg_0
+        if _ok_0 then
+                return ...
+        end
+end
+local _anon_func_9 = function(func, pcall)
+        return _anon_func_10(pcall(func))
+end
+local _anon_func_12 = function(_arg_0, ...)
+        local _ok_0 = _arg_0
+        if _ok_0 then
+                return ...
+        end
+end
+local _anon_func_11 = function(func, pcall)
+        return _anon_func_12(pcall(func))
+end
+local _anon_func_14 = function(_arg_0, ...)
+        local _ok_0 = _arg_0
+        if _ok_0 then
+                return ...
+        end
+end
+local _anon_func_15 = function(func, print)
+        print(123)
+        return func()
+end
+local _anon_func_13 = function(func, print, xpcall)
+        return _anon_func_14(xpcall(_anon_func_15, function(e)
+                print(e)
+                return e
+        end, func, print))
+end
 local f
 f = function()
         xpcall(function()
@@ -104,10 +142,236 @@ f = function()
         do
                 x(function()
                         local tb, a, b, c
-                        f = function()
+                        local f1
+                        f1 = function()
                                 return pcall(_anon_func_7, a, b, c, tb)
                         end
                 end)
         end
+        do
+                local f1
+                f1 = function()
+                        do
+                                return _anon_func_8(pcall(function()
+                                        return func()
+                                end))
+                        end
+                end
+        end
+        do
+                local func
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(func)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                        return func()
+                end)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a
+                local _exp_0 = (_anon_func_9(func, pcall))
+                if _exp_0 ~= nil then
+                        a = _exp_0
+                else
+                        a = "default"
+                end
+        end
+        do
+                f(_anon_func_11(func, pcall))
+        end
+        do
+                f(_anon_func_13(func, print, xpcall))
+        end
         return nil
 end
+local _anon_func_16 = function(a, b, c, tb)
+        return tb.f(a, b, c)
+end
+local _anon_func_17 = function(_arg_0, ...)
+        local ok = _arg_0
+        return ...
+end
+do
+        xpcall(function()
+                return func(1, 2, 3)
+        end, function(err)
+                return print(err)
+        end)
+        xpcall(function()
+                return func(1, 2, 3)
+        end, function(err)
+                return print(err)
+        end)
+        pcall(function()
+                print("trying")
+                return func(1, 2, 3)
+        end)
+        do
+                local success, result = xpcall(function()
+                        return func(1, 2, 3)
+                end, function(err)
+                        return print(err)
+                end)
+                success, result = pcall(function()
+                        return func(1, 2, 3)
+                end)
+        end
+        local tb = { }
+        pcall(function()
+                return tb.func
+        end)
+        pcall(function()
+                return tb.func()
+        end)
+        pcall(function()
+                return tb.func()
+        end)
+        pcall(function()
+                return (tb.func())
+        end)
+        pcall(function()
+                return (tb:func(1, 2, 3))
+        end)
+        pcall(function()
+                return tb.func(1)
+        end)
+        pcall(function()
+                return tb.func(1)
+        end)
+        if (xpcall(function()
+                return func(1)
+        end, function(err)
+                return print(err)
+        end)) then
+                print("OK")
+        end
+        if xpcall(function()
+                return (func(1))
+        end, function(err)
+                return print(err)
+        end) then
+                print("OK")
+        end
+        do
+                do
+                        local success, result = pcall(function()
+                                return func("abc", 123)
+                        end)
+                        if success then
+                                print(result)
+                        end
+                end
+                local success, result = xpcall(function()
+                        return func("abc", 123)
+                end, function(err)
+                        return print(err)
+                end)
+                success, result = xpcall(function()
+                        return func("abc", 123)
+                end, function(err)
+                        return print(err)
+                end)
+                if success then
+                        print(result)
+                end
+        end
+        do
+                pcall(function()
+                        return func(1, 2, 3)
+                end)
+                pcall(function()
+                        return func(1, 2, 3)
+                end)
+        end
+        do
+                x(function()
+                        local tb, a, b, c
+                        local f1
+                        f1 = function()
+                                return pcall(_anon_func_16, a, b, c, tb)
+                        end
+                end)
+        end
+        do
+                local f1
+                f1 = function()
+                        do
+                                return _anon_func_17(pcall(function()
+                                        return func()
+                                end))
+                        end
+                end
+        end
+        do
+                local func
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(func)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a, b, c
+                local _ok_0, _ret_0, _ret_1, _ret_2 = pcall(function()
+                        return func()
+                end)
+                if _ok_0 then
+                        a, b, c = _ret_0, _ret_1, _ret_2
+                end
+        end
+        do
+                local a
+                local _exp_0 = ((function()
+                        return (function(_arg_0, ...)
+                                local _ok_0 = _arg_0
+                                if _ok_0 then
+                                        return ...
+                                end
+                        end)(pcall(function()
+                                return func()
+                        end))
+                end)())
+                if _exp_0 ~= nil then
+                        a = _exp_0
+                else
+                        a = "default"
+                end
+        end
+        do
+                f((function()
+                        return (function(_arg_0, ...)
+                                local _ok_0 = _arg_0
+                                if _ok_0 then
+                                        return ...
+                                end
+                        end)(pcall(function()
+                                return func()
+                        end))
+                end)())
+        end
+        do
+                f((function()
+                        return (function(_arg_0, ...)
+                                local _ok_0 = _arg_0
+                                if _ok_0 then
+                                        return ...
+                                end
+                        end)(xpcall(function()
+                                print(123)
+                                return func()
+                        end, function(e)
+                                print(e)
+                                return e
+                        end))
+                end)())
+        end
+end
+return nil
diff --git a/spec/outputs/unicode/assign.lua b/spec/outputs/unicode/assign.lua
index d4ad56a..e00d016 100644
--- a/spec/outputs/unicode/assign.lua
+++ b/spec/outputs/unicode/assign.lua
@@ -43,10 +43,8 @@ do
         end
 end
 local _anon_func_0 = function(_u6253_u5370)
-        do
-                _u6253_u5370(123)
-                return { }
-        end
+        _u6253_u5370(123)
+        return { }
 end
 return __u65e0_u6548_u53d8_u91cf(function()
         setmetatable(a_u53d8_u91cf, _anon_func_0(_u6253_u5370))
diff --git a/spec/outputs/unicode/macro.lua b/spec/outputs/unicode/macro.lua
index 3b9327a..b4e78cd 100644
--- a/spec/outputs/unicode/macro.lua
+++ b/spec/outputs/unicode/macro.lua
@@ -216,17 +216,15 @@ do
 end
 local _ = require('下划线')
 local _anon_func_0 = function(_)
-        do
-                local _call_0 = (_({
-                        1,
-                        2,
-                        3,
-                        4,
-                        -2,
-                        3
-                }))
-                return _call_0["链"](_call_0)
-        end
+        local _call_0 = (_({
+                1,
+                2,
+                3,
+                4,
+                -2,
+                3
+        }))
+        return _call_0["链"](_call_0)
 end
 local _call_0 = ((function()
         local _call_0 = ((function()
@@ -241,17 +239,15 @@ local _call_0 = ((function()
 end)())
 local _u7ed3_u679ca = _call_0["取值"](_call_0)
 local _anon_func_1 = function(_)
-        do
-                local _call_1 = (_({
-                        1,
-                        2,
-                        3,
-                        4,
-                        -2,
-                        3
-                }))
-                return _call_1["链"](_call_1)
-        end
+        local _call_1 = (_({
+                1,
+                2,
+                3,
+                4,
+                -2,
+                3
+        }))
+        return _call_1["链"](_call_1)
 end
 do
         local _call_1 = ((function()
@@ -270,10 +266,8 @@ do
         end)
 end
 local _anon_func_2 = function(_u539f_u70b9)
-        do
-                local _call_1 = _u539f_u70b9["变换"]["根节点"]["游戏对象"]
-                return _call_1["父节点"](_call_1)
-        end
+        local _call_1 = _u539f_u70b9["变换"]["根节点"]["游戏对象"]
+        return _call_1["父节点"](_call_1)
 end
 local _call_1 = ((function()
         local _call_1 = ((function()
diff --git a/spec/outputs/unicode/multiline_chain.lua b/spec/outputs/unicode/multiline_chain.lua
index c1da13f..61e7057 100644
--- a/spec/outputs/unicode/multiline_chain.lua
+++ b/spec/outputs/unicode/multiline_chain.lua
@@ -59,10 +59,8 @@ _u51fd_u6570 = function()
         return _accum_0
 end
 local _anon_func_0 = function(_u53d8_u91cfa)
-        do
-                local _call_1 = _u53d8_u91cfa
-                return (_call_1["变量b"](_call_1, 123))["变量c"]("abc")
-        end
+        local _call_1 = _u53d8_u91cfa
+        return (_call_1["变量b"](_call_1, 123))["变量c"]("abc")
 end
 local _u51fd_u65701
 _u51fd_u65701 = function()
diff --git a/spec/outputs/unicode/syntax.lua b/spec/outputs/unicode/syntax.lua
index 1984f40..a13302b 100644
--- a/spec/outputs/unicode/syntax.lua
+++ b/spec/outputs/unicode/syntax.lua
@@ -286,10 +286,8 @@ _ = 5 - _u4ec0_u4e48(_u65e0_u804a)
 _u4ec0_u4e48(_u65e0_u804a - 5)
 _u53d8_u91cfx = _u4f60_u597d - _u4e16_u754c - _u67d0_u7269
 local _anon_func_0 = function(_u4ec0_u4e48)
-        do
-                local _call_8 = _u4ec0_u4e48
-                return _call_8["酷"](_call_8, 100)
-        end
+        local _call_8 = _u4ec0_u4e48
+        return _call_8["酷"](_call_8, 100)
 end
 (function(_u67d0_u7269)
         if _u67d0_u7269 == nil then
diff --git a/spec/outputs/unicode/vararg.lua b/spec/outputs/unicode/vararg.lua
index b837006..fc894ff 100644
--- a/spec/outputs/unicode/vararg.lua
+++ b/spec/outputs/unicode/vararg.lua
@@ -125,14 +125,10 @@ local _anon_func_11 = function(_u9879_u76ee, ...)
         return _tbl_0
 end
 local _anon_func_12 = function(_u51fd_u6570)
-        do
-                return _u51fd_u6570()
-        end
+        return _u51fd_u6570()
 end
 local _anon_func_13 = function(_u51fd_u6570, ...)
-        do
-                return _u51fd_u6570(...)
-        end
+        return _u51fd_u6570(...)
 end
 local _anon_func_14 = function(_u51fd_u6570)
         local _accum_0 = { }
@@ -195,15 +191,11 @@ local _anon_func_23 = function(_u51fd_u6570, ...)
         return nil
 end
 local _anon_func_24 = function(_u6253_u5370, select, ...)
-        do
-                _u6253_u5370(select("#", ...))
-                return _u6253_u5370(...)
-        end
+        _u6253_u5370(select("#", ...))
+        return _u6253_u5370(...)
 end
 local _anon_func_25 = function(_u6253_u5370, ...)
-        do
-                return _u6253_u5370(...)
-        end
+        return _u6253_u5370(...)
 end
 local _anon_func_26 = function(_u53d8_u91cfx, _u8868, _u88682)
         if 1 == _u53d8_u91cfx then
@@ -214,9 +206,7 @@ local _anon_func_26 = function(_u53d8_u91cfx, _u8868, _u88682)
         end
 end
 local _anon_func_27 = function(_u6253_u5370, ...)
-        do
-                return _u6253_u5370(...)
-        end
+        return _u6253_u5370(...)
 end
 local _anon_func_28 = function(_u6761_u4ef6)
         if _u6761_u4ef6 then
@@ -224,10 +214,8 @@ local _anon_func_28 = function(_u6761_u4ef6)
         end
 end
 local _anon_func_29 = function(_u6253_u5370, _arg_0, ...)
-        do
-                local _u8868 = _arg_0
-                return _u6253_u5370(...)
-        end
+        local _u8868 = _arg_0
+        return _u6253_u5370(...)
 end
 local _u8fde_u63a5
 _u8fde_u63a5 = function(...)
diff --git a/spec/outputs/upvalue_func.lua b/spec/outputs/upvalue_func.lua
index 3181adf..3e088be 100644
--- a/spec/outputs/upvalue_func.lua
+++ b/spec/outputs/upvalue_func.lua
@@ -214,10 +214,8 @@ local _anon_func_1 = function(valueB)
         end
 end
 local _anon_func_2 = function(print, select, _arg_0, ...)
-        do
-                local ok = _arg_0
-                return print(select(3, ...))
-        end
+        local ok = _arg_0
+        return print(select(3, ...))
 end
 local _anon_func_3 = function(tb)
         if tb ~= nil then
@@ -242,11 +240,9 @@ local _anon_func_5 = function(getmetatable, tb)
         return _obj_0[1 + 1](_obj_0, "abc")
 end
 local _anon_func_6 = function(tb)
-        do
-                local _call_0 = tb
-                local _call_1 = _call_0["end"](_call_0)
-                return _call_1["🤣"](_call_1, 123)
-        end
+        local _call_0 = tb
+        local _call_1 = _call_0["end"](_call_0)
+        return _call_1["🤣"](_call_1, 123)
 end
 local _anon_func_7 = function(itemA, listA)
         for _index_0 = 1, #listA do
@@ -354,17 +350,13 @@ local _anon_func_16 = function(pairs, tb, tostring)
         return _tbl_0
 end
 local _anon_func_17 = function(print)
-        do
-                print(123)
-                return "abc"
-        end
+        print(123)
+        return "abc"
 end
 local _anon_func_18 = function(print, select, _arg_0, ...)
-        do
-                local success = _arg_0
-                if success then
-                        return print(select('#', ...))
-                end
+        local success = _arg_0
+        if success then
+                return print(select('#', ...))
         end
 end
 local _anon_func_19 = function(cond, i)
@@ -459,11 +451,9 @@ local _anon_func_25 = function(itemA, listA)
         return false
 end
 local _anon_func_24 = function(itemA, listA, tb)
-        do
-                local _call_0 = tb
-                local _call_1 = _call_0["end"](_call_0)
-                return _call_1["🤣"](_call_1, 123 and (#listA > 0 and _anon_func_25(itemA, listA)))
-        end
+        local _call_0 = tb
+        local _call_1 = _call_0["end"](_call_0)
+        return _call_1["🤣"](_call_1, 123 and (#listA > 0 and _anon_func_25(itemA, listA)))
 end
 GameEngine:onEvent("SomeEvent", function()
         return func(value + (_anon_func_21(cond)) + (_anon_func_22(valueB)) > _anon_func_23(tb) + _anon_func_24(itemA, listA, tb))
@@ -503,13 +493,11 @@ local _anon_func_27 = function(char)
         return nil
 end
 local _anon_func_28 = function(os, _arg_0, ...)
-        do
-                local ok = _arg_0
-                if ok then
-                        return ...
-                else
-                        return os.exit(1)
-                end
+        local ok = _arg_0
+        if ok then
+                return ...
+        else
+                return os.exit(1)
         end
 end
 local _anon_func_29 = function(debug_env_after, debug_env_before, env, func)
diff --git a/spec/outputs/vararg.lua b/spec/outputs/vararg.lua
index dabba44..254aa6a 100644
--- a/spec/outputs/vararg.lua
+++ b/spec/outputs/vararg.lua
@@ -125,14 +125,10 @@ local _anon_func_11 = function(items, ...)
         return _tbl_0
 end
 local _anon_func_12 = function(func)
-        do
-                return func()
-        end
+        return func()
 end
 local _anon_func_13 = function(func, ...)
-        do
-                return func(...)
-        end
+        return func(...)
 end
 local _anon_func_14 = function(func)
         local _accum_0 = { }
@@ -195,15 +191,11 @@ local _anon_func_23 = function(func, ...)
         return nil
 end
 local _anon_func_24 = function(print, select, ...)
-        do
-                print(select("#", ...))
-                return print(...)
-        end
+        print(select("#", ...))
+        return print(...)
 end
 local _anon_func_25 = function(print, ...)
-        do
-                return print(...)
-        end
+        return print(...)
 end
 local _anon_func_26 = function(tb, tb2, x)
         if 1 == x then
@@ -214,9 +206,7 @@ local _anon_func_26 = function(tb, tb2, x)
         end
 end
 local _anon_func_27 = function(print, ...)
-        do
-                return print(...)
-        end
+        return print(...)
 end
 local _anon_func_28 = function(cond)
         if cond then
@@ -224,10 +214,8 @@ local _anon_func_28 = function(cond)
         end
 end
 local _anon_func_29 = function(print, _arg_0, ...)
-        do
-                local tb = _arg_0
-                return print(...)
-        end
+        local tb = _arg_0
+        return print(...)
 end
 local join
 join = function(...)