diff --git a/modules/comma/README.md b/modules/comma/README.md
index e29a0df..4b43066 100644
--- a/modules/comma/README.md
+++ b/modules/comma/README.md
@@ -1,93 +1,165 @@
+# Comma, task and test runner of nu script
+
 Working dir task runner, similar to `pwd-module`, but supports completion and description through custom data formats
-- `,` or `*` need to be exported in order to use `,` directly
-- Directly execute `,` to create a new template file or edit an existing file
-- Custom tasks are written in `$env.comma` and can be nested
-    - no spaces allowed in name (except testing)
-- Generate completions based on the structure of `$env.comma`
-- You can use closure to customize completion
-- In `$_.act` of default closure, you can receive parameters after the current position
-- In `$_.cmp` , you can receive the parameter before the current position
-- Supports `computed`, the definition method refers to `$env.comma_scope.computed`, accepts two parameters, runtime parameters and `$env.comma_scope`
-- Supports `filter`, similar to `computed`, but only runs when declared, specified through `$_.flt`
-- Supports `watch` (and polling), specified through `$_.wth`.
-    - `glob` defaults to `*`, `op` defaults to `['Write']`, `postpone` defaults to `false`
-    - In watch mode (not Polling) inject `$_.wth`(op, path, new_path) into parameter `$s`
-    - when the `interval` field is included, it is polling mode(`clear` defaults to 'false')
-- Identity supports alias
-    - children sub s
-    - description desc dsc d
-    - action act a
-    - completion cmp c
-    - filter flt f
-    - computed cpu u
-    - watch wth w
-    - tag
-    - expect exp e x
-    - mock test_args m
-    - report rpt r
 
+## Quick Start
+`,` or `*` need to be exported in order to use `,` Directly
 
-example:
 ```
-$env.comma_scope = {|_|{
-    created: '2023-12-24{0}01:46:27'
-    computed: {$_.computed:{|a, s| $'($s.created)($a)' }}
-    say: {|s| print $'(ansi $_.settings.theme.info)($s)(ansi reset)' }
-    quick: {$_.filter:{|a, s| do $s.say 'run a `quick` filter' }}
-    slow: {$_.filter:{|a, s|
-        do $s.say 'run a `slow` filter'
-        sleep 1sec
-        do $s.say 'filter need to be declared'
-        sleep 1sec
-        $'($s.computed)<($a)>'
-    }}
-}}
+use comma.nu *
+```
 
+When you enter a directory, if a `,.nu` file exists, it will be loaded. (Currently you need to press the Enter key again to take effect)
+
+Or `source` any file that defines `$env.comma_scope` and `$env.comma` variables
+
+If there is no `,.nu` file in the current directory, executing `,` without arguments will create a new one from the template. If the file exists, edit it
+
+### Task Definition
+Tasks are written in `$env.comma` and can be nested, and no spaces allowed in name (except testing).
+
+The nodes of the tree can be ordinary records, and the tasks are defined in the closure of the leaf nodes.
+
+This tree will be traversed during completion. For tasks, you can customize the completion behavior.
+
+Customize completion behavior, as well as descriptions, filters, watches, tests, etc. Need to add some special attributes to the record, such as `$_.children`, `$_.action`, `$_.completion` (so `$env.comma` and `$env.comma_scope` accepts a closure to avoid potential naming conflicts).
+
+```
 $env.comma = {|_|{
-    created: {|a, s| $s.computed }
-    inspect: {|a, s| {index: $_, scope: $s, args: $a} | table -e }
-    test: {
-        $_.sub: {
-            batch: { 'created; inspect' | do $_.batch }
-            watch: {
-                $_.action: {|a, s| $s | get $_.watch }
-                $_.completion: {ls *.json | get name}
-                $_.desc: 'inspect watch context'
-                $_.watch: {
-                    glob: '*'
-                    op: ['Write', 'Create']
-                    postpone: true
-                }
-            }
-            open_file: {
-                $_.action: {|a, s| open $a.0 }
-                $_.completion: {ls | get name}
-                $_.desc: 'open a file'
-                $_.filter: ['slow']
-            }
-            ping: {
-                $_.action: {|a, s| ping -c 2 localhost }
-                $_.watch: {
-                    interval: 2sec
-                    clear: true
-                }
-            }
+    dev: {
+        run: {
+            $_.action: {|a,s| nu $a.0 }
+            $_.watch: { glob: '*.nu', clear: true }
+            $_.completion: { ls *.nu | get name }
+            $_.desc: "develop a nu script"
         }
-        $_.desc: 'run test'
-        $_.filter: ['quick']
     }
 }}
 ```
 
-### todo
+These attributes support aliases like:
+
+|  attribute  |      alias     |
+|-------------|----------------|
+| children    | sub, s         |
+| description | desc, dsc, d   |
+| action      | act, a         |
+| completion  | cmp, c         |
+| filter      | flt, f         |
+| computed    | cpu, u         |
+| watch       | wth, w         |
+| tag         |                |
+| expect      | exp, e, x      |
+| mock        | test_args, m   |
+| report      | rpt, r         |
+
+The closure of the task's `action`, `completion` accepts two parameters, the rest arguments after the breadcrumbs and `$env.comma_scope`.
+
+`computed` and `filter` are defined in `$env.comma_scope` which is used to share data, alse accept these two parameters.
+
+`computed` is calculated in the defined order and replaced with the result.
+```
+$env.comma_scope = {|_|{
+    hello: 'hello'
+    greet: {$_.computed:{|a, s| $'($s.hello): ($a)' }}
+}}
+```
+
+`filter` is called when it is declared. If a record is returned, it will be merged back to the $env.comma_scope.
+```
+$env.comma_scope = {|_|{
+    log: {$_.filter:{|a, s| do $_.tips 'run filter' `foo` }}
+}}
+
+$env.comma = {|_|{
+    foo: {
+        $_.sub: {
+            bar: {
+                $_.action: { echo 'hello' }
+                $_.filter: ['log']
+            }
+        }
+        $_.filter: ['log']
+    }
+}}
+```
+
+#### Dry run
+If execute the command in `$_.action` with `pp`, and pass `--print` flag with `,`, only prints the arguments received by `pp` without actually executing it.
+
+`pp` can be run alone with flag `--print`.
+```
+pp --print aaa bbbb ccccc dddddd eeeeee  [
+    ffffff gggggggggg [
+        hhhhhhhhh iiiiiiiiii lllllllll
+    ] mmmmmmmmmmmmm nnnnnnnnnnnn
+    aaaaaaaaaaaaaaa
+    xxxxxxxxxxxxxxxx
+    yyyyyyyyyyyyyyyy
+    zzzzzzzzzzzzzzz
+    jjjjjjjjjjjjj
+] oooooooo ppppppppp [qqqqqq [rrrrrr ssssss tttttt] uuuuuu]
+```
+
+### Watch and polling
+If `$_.watch` is defined and run with `--watch` flag, it will be run in watch mode.
+```
+$env.comma = {|_|{
+    foo: {
+        $_.watch: {
+            glob: '*'
+            op: ['Write', 'Create']
+            postpone: true
+        }
+    }
+}}
+```
+- `glob` defaults to `*`, `op` defaults to `['Write']`, `postpone` defaults to `false`
+- In watch mode (not Polling) inject `$_.watch`(op, path, new_path) into parameter `$s`
+- when the `interval` field is included, it is polling mode(`clear` defaults to 'false')
+
+### Test
+If run with the `--test` flag, it will detect that all nodes with `$_.expect` under the current and run their actions.
+
+If there is also the --watch flag, it will run in watch mode without defining `$_.watch`.
+
+If `$_.mock` exists, it will be passed as arguments to the `$_.action` and `$_.expect`.
+
+If `$_.expect` is closure, pass it the result of `$_.action`, rest arguments and `$_.comma_scope`, if return True and the test passes.
+
+If `$_.expect` is list, will use the closures in it as a set of tests.
+
+If `$_.expect` is a scalar, it is compared directly with the result of actions.
+
+If `$_.report` exists and the test fails, execute `$_.report` (has a predefined report  `$_.diff`)
+
+### vscode-tasks
+The default template contains `vscode-tasks` and outputs a `.vscode/tasks.json`.
+
+```
+$env.comma = {|_|{
+    vscode-tasks: {
+        $_.a: {
+            mkdir .vscode
+            ', --vscode -j' | do $_.batch ',.nu' | save -f .vscode/tasks.json
+        }
+        $_.d: "generate .vscode/tasks.json"
+        $_.w: { glob: ',.nu' }
+    }
+}}
+```
+> requires `augustocdias.tasks-shell-input` to run `$_.completion` closure.
+
+## todo
 - [x] run
-    - [ ] dry
-        - [ ] dry wrap lines
-        - [ ] accept list<string>
+    - [x] dry
+        - [x] dry wrap lines
+        - [x] accept list<string>
     - [x] formatter: outdent
 - [x] complete
     - [x] with args
 - [x] scoped test
+    - [x] pass scoped
     - [x] tree map
     - [x] test
     - [ ] tag
@@ -116,7 +188,6 @@ $env.comma = {|_|{
             - [ ] pickString
             - [x] augustocdias.tasks-shell-input
             - [x] allow rest args as `promptString`
-            - https://code.visualstudio.com/docs/editor/variables-reference
         - [x] clean filter output
         - [x] add gen vscode-tasks to template
         - [ ] test and watch
diff --git a/modules/comma/comma.nu b/modules/comma/comma.nu
index 505b803..3300d8a 100644
--- a/modules/comma/comma.nu
+++ b/modules/comma/comma.nu
@@ -1,6 +1,12 @@
 export def lg [tag?] {
     let o = $in
-    print -e $'---($tag)---($o | describe)(char newline)($o | to yaml)'
+    let t = [
+        $'(ansi xterm_grey)--------(ansi xterm_olive)($tag)(ansi xterm_grey)--------'
+        $'(ansi xterm_grey39)($o | describe)'
+        $'(ansi xterm_grey66)($o | to yaml)'
+        (ansi reset)
+    ]
+    print -e ($t | str join (char newline))
     $o
 }
 
@@ -190,7 +196,9 @@ module resolve {
         }
         for i in ($flts | default []) {
             if $i in $flt {
-                $vs = ($vs | merge {$i: (do ($flt | get $i) $args $vs)} )
+                let fr = do ($flt | get $i) $args $vs
+                let fr = if ($fr | describe -d).type == 'record' { $fr } else { {} }
+                $vs = ($vs | merge $fr)
             } else {
                 error make -u {msg: $"filter `($i)` not found" }
             }
@@ -770,8 +778,8 @@ export-env {
                     print -e $"(ansi light_gray_italic)($m.0)(ansi reset) (ansi yellow_bold)($m.1?)(ansi reset)"
                 }
             }
-            T: { true }
-            F: { false }
+            T: {|f| {|r,a,s| do $f $r $a $s; true } }
+            F: {|f| {|r,a,s| do $f $r $a $s; false } }
             I: {|x| $x }
             diff: {|x|
                 use test
diff --git a/modules/comma/comma_test.nu b/modules/comma/comma_test.nu
index ad4d39a..1405311 100644
--- a/modules/comma/comma_test.nu
+++ b/modules/comma/comma_test.nu
@@ -65,8 +65,8 @@ $env.comma = {|_|{
             'example a b c e': {
                 $_.act: {, -c example a b c e }
                 $_.x: [
-                    {|r,a| $r | where value == 'f' | not ($in | is-empty) }
-                    $_.T
+                    {|r,a,s| $r | where value == 'f' | not ($in | is-empty) }
+                    (do $_.T {|r,a,s| $s | lg 'expect'})
                     {|r,a| 'q1|q2|q3|q4| open a file' == ($r | get 1.description) }
                 ]
             }
@@ -105,8 +105,8 @@ $env.comma = {|_|{
             b: {
                 $_.sub: {
                     t1: {
-                        $_.act: $_.T
-                        $_.exp: $_.T
+                        $_.act: { true }
+                        $_.exp: { true }
                     }
                     open_file: {
                         $_.act: {|a, s| open $a.0 }
@@ -119,7 +119,7 @@ $env.comma = {|_|{
                             e: {
                                 $_.sub: {
                                     f: {
-                                        $_.act: $_.T
+                                        $_.act: { true }
                                     }
                                     open_file: {
                                         $_.act: {|a, s| open $a.0 }
@@ -131,8 +131,8 @@ $env.comma = {|_|{
                                         $_.report: $_.diff
                                     }
                                     t3: {
-                                        $_.act: $_.T
-                                        $_.exp: $_.T
+                                        $_.act: { true }
+                                        $_.exp: { true }
                                     }
                                 }
                                 $_.dsc: 'ok'
@@ -141,8 +141,8 @@ $env.comma = {|_|{
                         }
                     }
                     t2: {
-                        $_.act: $_.T
-                        $_.exp: $_.T
+                        $_.act: { true }
+                        $_.exp: { true }
                     }
                 }
                 $_.dsc: 'this way'
@@ -198,15 +198,15 @@ $env.comma = {|_|{
                 args: [example a b c e]
             }
             do $_.test 'run test' {
-                expect: $_.T
+                expect: { true }
                 spec: {, -e test example }
             }
             do $_.test 'run leaf test' {
-                expect: $_.T
+                expect: { true }
                 spec: { , -t example a b t1 }
             }
             do $_.test 'suit' {
-                expect: $_.T
+                expect: { true }
                 spec: { , -t suit }
             }
         }
@@ -244,7 +244,7 @@ $env.comma = {|_|{
                 $_.wth: { glob: '*.nu' }
             }
             complete: {
-                $_.act: $_.T
+                $_.act: { true }
                 $_.wth: { glob: '*.nu' }
             }
         }
diff --git a/modules/comma/comma_tmpl.nu b/modules/comma/comma_tmpl.nu
index 3963c53..6f97197 100644
--- a/modules/comma/comma_tmpl.nu
+++ b/modules/comma/comma_tmpl.nu
@@ -1,14 +1,7 @@
 $env.comma_scope = {|_|{
     created: '{{time}}'
     computed: {$_.computed:{|a, s| $'($s.created)($a)' }}
-    quick: {$_.filter:{|a, s| do $_.tips 'run filter' `quick` }}
-    slow: {$_.filter:{|a, s|
-        do $_.tips 'run filter' `slow`
-        sleep 1sec
-        do $_.tips 'filter need to be declared'
-        sleep 1sec
-        $'($s.computed)<($a)>'
-    }}
+    log_args: {$_.filter:{|a, s| do $_.tips 'received arguments' $a }}
 }}
 
 $env.comma = {|_|{
@@ -29,36 +22,42 @@ $env.comma = {|_|{
             $_.completion: { ls *.nu | get name }
             $_.desc: "develop a nu script"
         }
-        watch: {
-            $_.a: {|a,s| $', dev run ($a.0)' | do $_.batch ',.nu' }
-            $_.x: {|r,a| false }
-            $_.m: [,.nu]
-            $_.c: { ls *.nu | get name }
-        }
-    }
-    test: {
-        $_.sub: {
-            batch: { ', created; , inspect' | do $_.batch ',.nu' }
-            watch: {
-                $_.act: {|a, s| $s | get $_.watch }
-                $_.cmp: {ls *.json | get name}
-                $_.dsc: 'inspect watch context'
-                $_.wth: {
-                    glob: '*'
-                    op: ['Write', 'Create']
-                    postpone: true
+        build: {
+            image: {
+                $_.a: {|a,s|
+                    ^$env.docker-cli pull $a.0
+                    let tmp = mktemp
+                    $"
+                    FROM ($a.0)
+
+                    RUN apt update \\
+                     && apt-get upgrade -y \\
+                     && DEBIAN_FRONTEND=noninteractive \\
+                        apt-get install -y --no-install-recommends \\
+                            curl ca-certificates \\
+                     && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* \\
+                     && curl -sSL ($a.2) | tar zxf - -C /opt/vendor \\
+                     && chown -R 33:33 /opt/vendor"
+                    | do $_.outdent
+                    | save -f $tmp
+
+                    ^$env.docker-cli build -f $tmp -t $a.1 .
+                    rm -f $tmp
+                    ^$env.docker-cli push $a.1
                 }
-            }
-            ping: {
-                $_.action: {|a, s| ping -c 2 localhost }
-                $_.watch: {
-                    interval: 2sec
-                    clear: true
+                $_.c: {|a,s|
+                    let l = $a | length
+                    if $l < 1 {
+                        ['ubuntu', 'alpine', 'nginx']
+                    } else if $l < 2 {
+                        ['target']
+                    } else {
+                        ['vendor']
+                    }
                 }
-                $_.filter: ['slow']
+                $_.d: 'build docker image'
+                $_.f: ['log_args']
             }
         }
-        $_.desc: 'run test'
-        $_.filter: ['quick']
     }
 }}