v3.9.2

Adding task started and task finished in the verbose otput

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,7 +1,6 @@
 ---
 name: Bug Report
 about: Use the template to report bugs and issues
-labels: bug
 ---
 
 - Task version:

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,7 +1,6 @@
 ---
 name: Feature Request
 about: Use the template to make feature requests
-labels: feature
 ---
 
 Describe in detail what feature do you want to see in Task.

.github/workflows/release.yml

@@ -15,12 +15,12 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: 1.15.x
+          go-version: 1.17.x
 
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v1
+        uses: goreleaser/goreleaser-action@v2
         with:
           version: latest
           args: release --rm-dist
         env:
-          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+          GITHUB_TOKEN: ${{secrets.GH_PAT}}

.github/workflows/test.yml

@@ -5,7 +5,7 @@ jobs:
     name: Test
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x]
+        go-version: [1.16.x, 1.17.x]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{matrix.platform}}
     steps:

.goreleaser.yml

@@ -1,6 +1,6 @@
 build:
   binary: task
-  main: cmd/task
+  main: ./cmd/task
   goos:
     - windows
     - darwin
@@ -25,6 +25,10 @@ gomod:
 
 archives:
   - name_template: "{{.Binary}}_{{.Os}}_{{.Arch}}"
+    files:
+      - README.md
+      - LICENSE
+      - completion/**/*
     format_overrides:
       - goos: windows
         format: zip
@@ -50,3 +54,20 @@ nfpms:
       - deb
       - rpm
     file_name_template: "{{.ProjectName}}_{{.Os}}_{{.Arch}}"
+
+brews:
+  - name: go-task
+    description: Task runner / simpler Make alternative written in Go
+    license: MIT
+    homepage: https://taskfile.dev
+    folder: Formula
+    tap:
+      owner: go-task
+      name: homebrew-tap
+    test:
+      system "#{bin}/task", "--help"
+    install: |-
+      bin.install "task"
+      bash_completion.install "completion/bash/task.bash" => "task"
+      zsh_completion.install "completion/zsh/_task" => "_task"
+      fish_completion.install "completion/fish/task.fish"

CHANGELOG.md

@@ -1,5 +1,70 @@
 # Changelog
 
+## v3.9.2 - 2021-12-02
+
+- Upgrade [mvdan/sh](https://github.com/mvdan/sh) which contains a fix a for
+  a important regression on Windows
+  ([#619](https://github.com/go-task/task/issues/619), [mvdan/sh#768](https://github.com/mvdan/sh/issues/768), [mvdan/sh#769](https://github.com/mvdan/sh/pull/769)).
+
+## v3.9.1 - 2021-11-28
+
+- Add logging in verbose mode for when a task starts and finishes
+  ([#533](https://github.com/go-task/task/issues/533), [#588](https://github.com/go-task/task/pull/588)).
+- Fix an issue with preconditions and context errors
+  ([#597](https://github.com/go-task/task/issues/597), [#598](https://github.com/go-task/task/pull/598)).
+- Quote each `{{.CLI_ARGS}}` argument to prevent one with spaces to become many
+  ([#613](https://github.com/go-task/task/pull/613)).
+- Fix  nil pointer when `cmd:` was left empty
+  ([#612](https://github.com/go-task/task/issues/612), [#614](https://github.com/go-task/task/pull/614)).
+- Upgrade [mvdan/sh](https://github.com/mvdan/sh) which contains two
+  relevant fixes:
+  - Fix quote of empty strings in `shellQuote`
+    ([#609](https://github.com/go-task/task/issues/609), [mvdan/sh#763](https://github.com/mvdan/sh/issues/763)).
+  - Fix issue of wrong environment variable being picked when there's another
+    very similar one
+    ([#586](https://github.com/go-task/task/issues/586), [mvdan/sh#745](https://github.com/mvdan/sh/pull/745)).
+- Install shell completions automatically when installing via Homebrew
+  ([#264](https://github.com/go-task/task/issues/264), [#592](https://github.com/go-task/task/pull/592), [go-task/homebrew-tap#2](https://github.com/go-task/homebrew-tap/pull/2)).
+
+## v3.9.0 - 2021-10-02
+
+- A new `shellQuote` function was added to the template system
+  (`{{shellQuote "a string"}}`) to ensure a string is safe for use in shell
+  ([mvdan/sh#727](https://github.com/mvdan/sh/pull/727), [mvdan/sh#737](https://github.com/mvdan/sh/pull/737), [Documentation](https://pkg.go.dev/mvdan.cc/sh/v3@v3.4.0/syntax#Quote))
+- In this version [mvdan.cc/sh](https://github.com/mvdan/sh) was upgraded
+  with some small fixes and features
+  - The `read -p` flag is now supported
+    ([#314](https://github.com/go-task/task/issues/314), [mvdan/sh#551](https://github.com/mvdan/sh/issues/551), [mvdan/sh#772](https://github.com/mvdan/sh/pull/722))
+  - The `pwd -P` and `pwd -L` flags are now supported
+    ([#553](https://github.com/go-task/task/issues/553), [mvdan/sh#724](https://github.com/mvdan/sh/issues/724), [mvdan/sh#728](https://github.com/mvdan/sh/pull/728))
+  - The `$GID` environment variable is now correctly being set
+    ([#561](https://github.com/go-task/task/issues/561), [mvdan/sh#723](https://github.com/mvdan/sh/pull/723))
+
+## v3.8.0 - 2021-09-26
+
+- Add `interactive: true` setting to improve support for interactive CLI apps
+  ([#217](https://github.com/go-task/task/issues/217), [#563](https://github.com/go-task/task/pull/563)).
+- Fix some `nil` errors
+  ([#534](https://github.com/go-task/task/issues/534), [#573](https://github.com/go-task/task/pull/573)).
+- Add ability to declare an included Taskfile as optional
+  ([#519](https://github.com/go-task/task/issues/519), [#552](https://github.com/go-task/task/pull/552)).
+- Add support for including Taskfiles in the home directory by using `~`
+  ([#539](https://github.com/go-task/task/issues/539), [#557](https://github.com/go-task/task/pull/557)).
+
+## v3.7.3 - 2021-09-04
+
+- Add official support to Apple M1 ([#564](https://github.com/go-task/task/pull/564), [#567](https://github.com/go-task/task/pull/567)).
+- Our [official Homebrew tap](https://github.com/go-task/homebrew-tap) will
+  support more platforms, including Apple M1
+
+## v3.7.0 - 2021-07-31
+
+- Add `run:` setting to control if tasks should run multiple times or not.
+  Available options are `always` (the default), `when_changed` (if a variable
+  modified the task) and `once` (run only once no matter what).
+  This is a long time requested feature. Enjoy!
+  ([#53](https://github.com/go-task/task/issues/53), [#359](https://github.com/go-task/task/pull/359)).
+
 ## v3.6.0 - 2021-07-10
 
 - Allow using both `sources:` and `status:` in the same task

cmd/task/task.go

@@ -12,6 +12,7 @@ import (
 	"syscall"
 
 	"github.com/spf13/pflag"
+	"mvdan.cc/sh/v3/syntax"
 
 	"github.com/go-task/task/v3"
 	"github.com/go-task/task/v3/args"
@@ -159,18 +160,22 @@ func main() {
 	}
 
 	var (
-		calls                 []taskfile.Call
-		globals               *taskfile.Vars
-		tasksAndVars, cliArgs = getArgs()
+		calls   []taskfile.Call
+		globals *taskfile.Vars
 	)
 
+	tasksAndVars, cliArgs, err := getArgs()
+	if err != nil {
+		log.Fatal(err)
+	}
+
 	if v >= 3.0 {
 		calls, globals = args.ParseV3(tasksAndVars...)
 	} else {
 		calls, globals = args.ParseV2(tasksAndVars...)
 	}
 
-	globals.Set("CLI_ARGS", taskfile.Var{Static: strings.Join(cliArgs, " ")})
+	globals.Set("CLI_ARGS", taskfile.Var{Static: cliArgs})
 	e.Taskfile.Vars.Merge(globals)
 
 	ctx := context.Background()
@@ -191,20 +196,25 @@ func main() {
 	}
 }
 
-func getArgs() (tasksAndVars, cliArgs []string) {
+func getArgs() ([]string, string, error) {
 	var (
 		args          = pflag.Args()
 		doubleDashPos = pflag.CommandLine.ArgsLenAtDash()
 	)
 
-	if doubleDashPos != -1 {
-		tasksAndVars = args[:doubleDashPos]
-		cliArgs = args[doubleDashPos:]
-	} else {
-		tasksAndVars = args
+	if doubleDashPos == -1 {
+		return args, "", nil
 	}
 
-	return
+	var quotedCliArgs []string
+	for _, arg := range args[doubleDashPos:] {
+		quotedCliArg, err := syntax.Quote(arg, syntax.LangBash)
+		if err != nil {
+			return nil, "", err
+		}
+		quotedCliArgs = append(quotedCliArgs, quotedCliArg)
+	}
+	return args[:doubleDashPos], strings.Join(quotedCliArgs, " "), nil
 }
 
 func getSignalContext() context.Context {

completion/bash/task.bash

@@ -15,7 +15,7 @@ _task_completion()
     return
   fi
 
-  COMPREPLY=($(compgen -c | echo "$scripts" | grep $curr_arg));
+  COMPREPLY=($(compgen -c | echo "$scripts" | grep -- $curr_arg));
 }
 
 complete -F _task_completion task

completion/fish/task.fish

@@ -1,5 +1,5 @@
 function __task_get_tasks --description "Prints all available tasks with their description"
-	task -l | sed '1d' | awk '{ $1=""; print $0 }' | tr ': ', '\t' | string trim
+	task -l | sed '1d' | awk '{ $1=""; print $0 }' | sed 's/:\ /\t/g' | string trim
 end
 
 complete -c task -d 'Runs the specified task(s). Falls back to the "default" task if no task name was specified, or lists all tasks if an unknown task name was 

docs/community.md

@@ -23,6 +23,12 @@ Additionally, there's also some work done by
 extension, which has its code [here](https://github.com/paulvarache/vscode-taskfile)
 and is published [here](https://marketplace.visualstudio.com/items?itemName=paulvarache.vscode-taskfile).
 
+### Sublime Text 4 package
+
+There is a convenience wrapper for initializing and running tasks from Sublime Text's command palette. The package is 
+developed by [@biozz](https://github.com/biozz), the source code is available [here](https://github.com/biozz/sublime-taskfile)
+and it is published on Package Control [here](https://packagecontrol.io/packages/Taskfile).
+
 ## Installation methods
 
 Some installation methods are maintained by third party:

docs/styleguide.md

@@ -28,7 +28,7 @@ officially supported. On Linux, only `Taskfile.yml` will work, though.
 
 - `version:`
 - `includes:`
-- Configuration ones, like `output:`, `expansions:` or `silent:`
+- Configuration ones, like `output:` or `silent:`
 - `vars:`
 - `env:`
 - `tasks:`
@@ -60,7 +60,6 @@ version: '3'
 includes:
   docker: ./docker/Taskfile.yml
 output: prefixed
-expansions: 3
 vars:
   FOO: bar
 env:
@@ -76,7 +75,6 @@ includes:
   docker: ./docker/Taskfile.yml
 
 output: prefixed
-expansions: 3
 
 vars:
   FOO: bar

docs/usage.md

@@ -154,6 +154,25 @@ includes:
 > This was a deliberate decision to keep use and implementation simple.
 > If you disagree, open an GitHub issue and explain your use case. =)
 
+### Optional includes
+
+Includes marked as optional will allow Task to continue execution as normal if
+the included file is missing.
+
+```yaml
+version: '3'
+
+includes:
+  tests:
+    taskfile: ./tests/Taskfile.yml
+    optional: true
+
+tasks:
+  greet:
+    cmds:
+      - echo "This command can still be successfully executed if ./tests/Taskfile.yml does not exist"
+```
+
 ## Task directory
 
 By default, tasks will be executed in the directory where the Taskfile is
@@ -453,6 +472,47 @@ tasks:
       - echo "I will not run"
 ```
 
+### Limiting when tasks run
+
+If a task executed by multiple `cmds` or multiple `deps` you can control
+when it is executed using `run`. `run` can also be set at the root
+of the Taskfile to change the behavior of all the tasks unless explicitly
+overridden.
+
+Supported values for `run`:
+
+ * `always` (default) always attempt to invoke the task regardless of the
+  number of previous executions
+ * `once` only invoke this task once regardless of the number of references
+ * `when_changed` only invokes the task once for each unique set of variables
+  passed into the task
+
+```yaml
+version: '3'
+
+tasks:
+  default:
+    cmds:
+      - task: generate-file
+        vars: { CONTENT: '1' }
+      - task: generate-file
+        vars: { CONTENT: '2' }
+      - task: generate-file
+        vars: { CONTENT: '2' }
+
+  generate-file:
+    run: when_changed
+    deps:
+      - install-deps
+    cmds:
+      - echo {{.CONTENT}}
+
+  install-deps:
+    run: once
+    cmds:
+      - sleep 5 # long operation like installing packages
+```
+
 ## Variables
 
 When doing interpolation of variables, Task will look for the below.
@@ -529,7 +589,7 @@ This works for all types of variables.
 
 ## Forwarding CLI arguments to commands
 
-If `--` is given in the CLI, all following paramaters are added to a
+If `--` is given in the CLI, all following parameters are added to a
 special `.CLI_ARGS` variable. This is useful to forward arguments to another
 command.
 
@@ -576,9 +636,12 @@ Task also adds the following functions:
 - `toSlash`: Does nothing on Unix, but on Windows converts a string from `\`
   path format to `/`.
 - `fromSlash`: Opposite of `toSlash`. Does nothing on Unix, but on Windows
-  converts a string from `\` path format to `/`.
+  converts a string from `/` path format to `\`.
 - `exeExt`: Returns the right executable extension for the current OS
   (`".exe"` for Windows, `""` for others).
+- `shellQuote`: Quotes a string to make it safe for use in shell scripts.
+  Task uses [this Go function](https://pkg.go.dev/mvdan.cc/sh/v3@v3.4.0/syntax#Quote)
+  for this. The Bash dialect is assumed.
 
 Example:
 
@@ -890,6 +953,28 @@ $ task default
 
 > The `output` option can also be specified by the `--output` or `-o` flags.
 
+## Interactive CLI application
+
+When running interactive CLI applications inside Task they can sometimes behave
+weirdly, specially when the [output mode](#output-syntax) is set to something
+other than `interleaved` (the default), or when interactive apps are ran in
+parallel with other tasks.
+
+The `interactive: true` tells Task this is an interactive application, and Task
+will try to optimize for it:
+
+```yaml
+version: '3'
+
+tasks:
+  cmds:
+    - vim my-file.txt
+  interactive: true
+```
+
+If you still have problem running an interactive app through Task, please open
+an issue about it.
+
 ## Short task syntax
 
 Starting on Task v3, you can now write tasks with a shorter syntax if they

go.mod

@@ -1,16 +1,17 @@
 module github.com/go-task/task/v3
 
 require (
-	github.com/fatih/color v1.12.0
+	github.com/fatih/color v1.13.0
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0
-	github.com/joho/godotenv v1.3.0
+	github.com/joho/godotenv v1.4.0
 	github.com/mattn/go-zglob v0.0.3
+	github.com/mitchellh/hashstructure/v2 v2.0.2
 	github.com/radovskyb/watcher v1.0.7
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.7.0
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
 	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c
-	mvdan.cc/sh/v3 v3.3.0
+	mvdan.cc/sh/v3 v3.4.2-0.20211202103622-5ae9d64e1402
 )
 
-go 1.13
+go 1.16

go.sum

@@ -1,38 +1,47 @@
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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-github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/creack/pty v1.1.15 h1:cKRCLMj3Ddm54bKSpemfQ8AtYFBhAI2MPmdys22fBdc=
+github.com/creack/pty v1.1.15/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fatih/color v1.12.0 h1:mRhaKNwANqRgUBGKmnI5ZxEk7QXmjQeCcuYFMX2bfcc=
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 github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
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+github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
 github.com/mattn/go-zglob v0.0.3 h1:6Ry4EYsScDyt5di4OI6xw1bYhOqfE5S33Z1OPy+d+To=
 github.com/mattn/go-zglob v0.0.3/go.mod h1:9fxibJccNxU2cnpIKLRRFA7zX7qhkJIQWBb449FYHOo=
+github.com/mitchellh/hashstructure/v2 v2.0.2 h1:vGKWl0YJqUNxE8d+h8f6NJLcCJrgbhC4NcD46KavDd4=
+github.com/mitchellh/hashstructure/v2 v2.0.2/go.mod h1:MG3aRVU/N29oo/V/IhBX8GR/zz4kQkprJgF2EVszyDE=
 github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/radovskyb/watcher v1.0.7 h1:AYePLih6dpmS32vlHfhCeli8127LzkIgwJGcwwe8tUE=
 github.com/radovskyb/watcher v1.0.7/go.mod h1:78okwvY5wPdzcb1UYnip1pvrZNIVEIh/Cm+ZuvsUYIg=
-github.com/rogpeppe/go-internal v1.7.0/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
+github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
+github.com/rogpeppe/go-internal v1.8.1-0.20210923151022-86f73c517451 h1:d1PiN4RxzIFXCJTvRkvSkKqwtRAl5ZV4lATKtQI0B7I=
+github.com/rogpeppe/go-internal v1.8.1-0.20210923151022-86f73c517451/go.mod h1:JeRgkft04UBgHMgCIwADu4Pn6Mtm5d4nPKWu0nJ5d+o=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -43,11 +52,14 @@ golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cO
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210503080704-8803ae5d1324 h1:pAwJxDByZctfPwzlNGrDN2BQLsdPb9NkhoTJtUkAO28=
-golang.org/x/sys v0.0.0-20210503080704-8803ae5d1324/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/term v0.0.0-20210503060354-a79de5458b56 h1:b8jxX3zqjpqb2LklXPzKSGJhzyxCOZSz8ncv8Nv+y7w=
-golang.org/x/term v0.0.0-20210503060354-a79de5458b56/go.mod h1:tfny5GFUkzUvx4ps4ajbZsCe5lw1metzhBm9T3x7oIY=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210925032602-92d5a993a665 h1:QOQNt6vCjMpXE7JSK5VvAzJC1byuN3FgTNSBwf+CJgI=
+golang.org/x/sys v0.0.0-20210925032602-92d5a993a665/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20210916214954-140adaaadfaf h1:Ihq/mm/suC88gF8WFcVwk+OV6Tq+wyA1O0E5UEvDglI=
+golang.org/x/term v0.0.0-20210916214954-140adaaadfaf/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -56,5 +68,5 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 mvdan.cc/editorconfig v0.2.0/go.mod h1:lvnnD3BNdBYkhq+B4uBuFFKatfp02eB6HixDvEz91C0=
-mvdan.cc/sh/v3 v3.3.0 h1:ujzElMnry63f4I5sjPFxzo6xia+gwsHZM0yyauuyZ6k=
-mvdan.cc/sh/v3 v3.3.0/go.mod h1:dh3avhLDhJJ/MJKzbak6FYn+DJKUWk7Fb6Dh5mGdv6Y=
+mvdan.cc/sh/v3 v3.4.2-0.20211202103622-5ae9d64e1402 h1:IhYcaLRZjSJqGoLrn+sXXFq3Xhd40I0wBkoIyg6cSZs=
+mvdan.cc/sh/v3 v3.4.2-0.20211202103622-5ae9d64e1402/go.mod h1:p/tqPPI4Epfk2rICAe2RoaNd8HBSJ8t9Y2DA9yQlbzY=

hash.go

@@ -0,0 +1,28 @@
+package task
+
+import (
+	"fmt"
+
+	"github.com/go-task/task/v3/internal/hash"
+	"github.com/go-task/task/v3/taskfile"
+)
+
+func (e *Executor) GetHash(t *taskfile.Task) (string, error) {
+	r := t.Run
+	if r == "" {
+		r = e.Taskfile.Run
+	}
+
+	var h hash.HashFunc
+	switch r {
+	case "always":
+		h = hash.Empty
+	case "once":
+		h = hash.Name
+	case "when_changed":
+		h = hash.Hash
+	default:
+		return "", fmt.Errorf(`task: invalid run "%s"`, r)
+	}
+	return h(t)
+}

internal/hash/hash.go

@@ -0,0 +1,24 @@
+package hash
+
+import (
+	"fmt"
+
+	"github.com/mitchellh/hashstructure/v2"
+
+	"github.com/go-task/task/v3/taskfile"
+)
+
+type HashFunc func(*taskfile.Task) (string, error)
+
+func Empty(*taskfile.Task) (string, error) {
+	return "", nil
+}
+
+func Name(t *taskfile.Task) (string, error) {
+	return t.Task, nil
+}
+
+func Hash(t *taskfile.Task) (string, error) {
+	h, err := hashstructure.Hash(t, hashstructure.FormatV2, nil)
+	return fmt.Sprintf("%s:%d", t.Task, h), err
+}

internal/templater/funcs.go

@@ -6,7 +6,8 @@ import (
 	"strings"
 	"text/template"
 
-	"github.com/go-task/slim-sprig"
+	sprig "github.com/go-task/slim-sprig"
+	"mvdan.cc/sh/v3/syntax"
 )
 
 var (
@@ -37,6 +38,9 @@ func init() {
 			}
 			return ""
 		},
+		"shellQuote": func(str string) (string, error) {
+			return syntax.Quote(str, syntax.LangBash)
+		},
 		// IsSH is deprecated.
 		"IsSH": func() bool { return true },
 	}

task.go

@@ -58,6 +58,8 @@ type Executor struct {
 	concurrencySemaphore chan struct{}
 	taskCallCount        map[string]*int32
 	mkdirMutexMap        map[string]*sync.Mutex
+	executionHashes      map[string]context.Context
+	executionHashesMutex sync.Mutex
 }
 
 // Run runs Task
@@ -149,9 +151,12 @@ func (e *Executor) Setup() error {
 	if v == 2.0 {
 		v = 2.6
 	}
+	if v == 3.0 {
+		v = 3.7
+	}
 
-	if v > 3.0 {
-		return fmt.Errorf(`task: Taskfile versions greater than v3.0 not implemented in the version of Task`)
+	if v > 3.7 {
+		return fmt.Errorf(`task: Taskfile versions greater than v3.7 not implemented in the version of Task`)
 	}
 
 	// Color available only on v3
@@ -260,6 +265,24 @@ func (e *Executor) Setup() error {
 		}
 	}
 
+	if v < 3.7 {
+		if e.Taskfile.Run != "" {
+			return errors.New(`task: Setting the "run" type is only available starting on Taskfile version v3.7`)
+		}
+
+		for _, task := range e.Taskfile.Tasks {
+			if task.Run != "" {
+				return errors.New(`task: Setting the "run" type is only available starting on Taskfile version v3.7`)
+			}
+		}
+	}
+
+	if e.Taskfile.Run == "" {
+		e.Taskfile.Run = "always"
+	}
+
+	e.executionHashes = make(map[string]context.Context)
+
 	e.taskCallCount = make(map[string]*int32, len(e.Taskfile.Tasks))
 	e.mkdirMutexMap = make(map[string]*sync.Mutex, len(e.Taskfile.Tasks))
 	for k := range e.Taskfile.Tasks {
@@ -286,48 +309,56 @@ func (e *Executor) RunTask(ctx context.Context, call taskfile.Call) error {
 	release := e.acquireConcurrencyLimit()
 	defer release()
 
-	if err := e.runDeps(ctx, t); err != nil {
-		return err
-	}
-
-	if !e.Force {
-		preCondMet, err := e.areTaskPreconditionsMet(ctx, t)
-		if err != nil {
+	return e.startExecution(ctx, t, func(ctx context.Context) error {
+		e.Logger.VerboseErrf(logger.Magenta, `task: "%s" started`, call.Task)
+		if err := e.runDeps(ctx, t); err != nil {
 			return err
 		}
 
-		upToDate, err := e.isTaskUpToDate(ctx, t)
-		if err != nil {
-			return err
-		}
-
-		if upToDate && preCondMet {
-			if !e.Silent {
-				e.Logger.Errf(logger.Magenta, `task: Task "%s" is up to date`, t.Name())
-			}
-			return nil
-		}
-	}
-
-	if err := e.mkdir(t); err != nil {
-		e.Logger.Errf(logger.Red, "task: cannot make directory %q: %v", t.Dir, err)
-	}
-
-	for i := range t.Cmds {
-		if err := e.runCommand(ctx, t, call, i); err != nil {
-			if err2 := e.statusOnError(t); err2 != nil {
-				e.Logger.VerboseErrf(logger.Yellow, "task: error cleaning status on error: %v", err2)
+		if !e.Force {
+			if err := ctx.Err(); err != nil {
+				return err
 			}
 
-			if execext.IsExitError(err) && t.IgnoreError {
-				e.Logger.VerboseErrf(logger.Yellow, "task: task error ignored: %v", err)
-				continue
+			preCondMet, err := e.areTaskPreconditionsMet(ctx, t)
+			if err != nil {
+				return err
 			}
 
-			return &taskRunError{t.Task, err}
+			upToDate, err := e.isTaskUpToDate(ctx, t)
+			if err != nil {
+				return err
+			}
+
+			if upToDate && preCondMet {
+				if !e.Silent {
+					e.Logger.Errf(logger.Magenta, `task: Task "%s" is up to date`, t.Name())
+				}
+				return nil
+			}
 		}
-	}
-	return nil
+
+		if err := e.mkdir(t); err != nil {
+			e.Logger.Errf(logger.Red, "task: cannot make directory %q: %v", t.Dir, err)
+		}
+
+		for i := range t.Cmds {
+			if err := e.runCommand(ctx, t, call, i); err != nil {
+				if err2 := e.statusOnError(t); err2 != nil {
+					e.Logger.VerboseErrf(logger.Yellow, "task: error cleaning status on error: %v", err2)
+				}
+
+				if execext.IsExitError(err) && t.IgnoreError {
+					e.Logger.VerboseErrf(logger.Yellow, "task: task error ignored: %v", err)
+					continue
+				}
+
+				return &taskRunError{t.Task, err}
+			}
+		}
+		e.Logger.VerboseErrf(logger.Magenta, `task: "%s" finished`, call.Task)
+		return nil
+	})
 }
 
 func (e *Executor) mkdir(t *taskfile.Task) error {
@@ -390,8 +421,13 @@ func (e *Executor) runCommand(ctx context.Context, t *taskfile.Task, call taskfi
 			return nil
 		}
 
-		stdOut := e.Output.WrapWriter(e.Stdout, t.Prefix)
-		stdErr := e.Output.WrapWriter(e.Stderr, t.Prefix)
+		outputWrapper := e.Output
+		if t.Interactive {
+			outputWrapper = output.Interleaved{}
+		}
+		stdOut := outputWrapper.WrapWriter(e.Stdout, t.Prefix)
+		stdErr := outputWrapper.WrapWriter(e.Stderr, t.Prefix)
+
 		defer func() {
 			if _, ok := stdOut.(*os.File); !ok {
 				if closer, ok := stdOut.(io.Closer); ok {
@@ -445,3 +481,32 @@ func getEnviron(t *taskfile.Task) []string {
 
 	return environ
 }
+
+func (e *Executor) startExecution(ctx context.Context, t *taskfile.Task, execute func(ctx context.Context) error) error {
+	h, err := e.GetHash(t)
+	if err != nil {
+		return err
+	}
+
+	if h == "" {
+		return execute(ctx)
+	}
+
+	e.executionHashesMutex.Lock()
+	otherExecutionCtx, ok := e.executionHashes[h]
+
+	if ok {
+		e.executionHashesMutex.Unlock()
+		e.Logger.VerboseErrf(logger.Magenta, "task: skipping execution of task: %s", h)
+		<-otherExecutionCtx.Done()
+		return nil
+	}
+
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	e.executionHashes[h] = ctx
+	e.executionHashesMutex.Unlock()
+
+	return execute(ctx)
+}

task_test.go

@@ -755,6 +755,41 @@ func TestIncludesCallingRoot(t *testing.T) {
 	tt.Run(t)
 }
 
+func TestIncludesOptional(t *testing.T) {
+	tt := fileContentTest{
+		Dir:       "testdata/includes_optional",
+		Target:    "default",
+		TrimSpace: true,
+		Files: map[string]string{
+			"called_dep.txt": "called_dep",
+		}}
+	tt.Run(t)
+}
+
+func TestIncludesOptionalImplicitFalse(t *testing.T) {
+	e := task.Executor{
+		Dir:    "testdata/includes_optional_implicit_false",
+		Stdout: ioutil.Discard,
+		Stderr: ioutil.Discard,
+	}
+
+	err := e.Setup()
+	assert.Error(t, err)
+	assert.Equal(t, "stat testdata/includes_optional_implicit_false/TaskfileOptional.yml: no such file or directory", err.Error())
+}
+
+func TestIncludesOptionalExplicitFalse(t *testing.T) {
+	e := task.Executor{
+		Dir:    "testdata/includes_optional_explicit_false",
+		Stdout: ioutil.Discard,
+		Stderr: ioutil.Discard,
+	}
+
+	err := e.Setup()
+	assert.Error(t, err)
+	assert.Equal(t, "stat testdata/includes_optional_explicit_false/TaskfileOptional.yml: no such file or directory", err.Error())
+}
+
 func TestSummary(t *testing.T) {
 	const dir = "testdata/summary"
 
@@ -979,3 +1014,41 @@ func TestExitImmediately(t *testing.T) {
 	assert.Error(t, e.Run(context.Background(), taskfile.Call{Task: "default"}))
 	assert.Contains(t, buff.String(), `"this_should_fail": executable file not found in $PATH`)
 }
+
+func TestRunOnlyRunsJobsHashOnce(t *testing.T) {
+	tt := fileContentTest{
+		Dir:    "testdata/run",
+		Target: "generate-hash",
+		Files: map[string]string{
+			"hash.txt": "starting 1\n1\n2\n",
+		},
+	}
+	tt.Run(t)
+}
+
+func TestIgnoreNilElements(t *testing.T) {
+	tests := []struct {
+		name string
+		dir  string
+	}{
+		{"nil cmd", "testdata/ignore_nil_elements/cmds"},
+		{"nil dep", "testdata/ignore_nil_elements/deps"},
+		{"nil include", "testdata/ignore_nil_elements/includes"},
+		{"nil precondition", "testdata/ignore_nil_elements/preconditions"},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			var buff bytes.Buffer
+			e := task.Executor{
+				Dir:    test.dir,
+				Stdout: &buff,
+				Stderr: &buff,
+				Silent: true,
+			}
+			assert.NoError(t, e.Setup())
+			assert.NoError(t, e.Run(context.Background(), taskfile.Call{Task: "default"}))
+			assert.Equal(t, "string-slice-1\n", buff.String())
+		})
+	}
+}

taskfile/included_taskfile.go

@@ -10,6 +10,7 @@ import (
 type IncludedTaskfile struct {
 	Taskfile       string
 	Dir            string
+	Optional       bool
 	AdvancedImport bool
 }
 
@@ -92,12 +93,14 @@ func (it *IncludedTaskfile) UnmarshalYAML(unmarshal func(interface{}) error) err
 	var includedTaskfile struct {
 		Taskfile string
 		Dir      string
+		Optional bool
 	}
 	if err := unmarshal(&includedTaskfile); err != nil {
 		return err
 	}
-	it.Dir = includedTaskfile.Dir
 	it.Taskfile = includedTaskfile.Taskfile
+	it.Dir = includedTaskfile.Dir
+	it.Optional = includedTaskfile.Optional
 	it.AdvancedImport = true
 	return nil
 }

taskfile/merge.go

@@ -49,7 +49,7 @@ func Merge(t1, t2 *Taskfile, namespaces ...string) error {
 			dep.Task = taskNameWithNamespace(dep.Task, namespaces...)
 		}
 		for _, cmd := range v.Cmds {
-			if cmd.Task != "" {
+			if cmd != nil && cmd.Task != "" {
 				cmd.Task = taskNameWithNamespace(cmd.Task, namespaces...)
 			}
 		}

taskfile/read/taskfile.go

@@ -9,6 +9,7 @@ import (
 
 	"gopkg.in/yaml.v3"
 
+	"github.com/go-task/task/v3/internal/execext"
 	"github.com/go-task/task/v3/internal/templater"
 	"github.com/go-task/task/v3/taskfile"
 )
@@ -42,6 +43,7 @@ func Taskfile(dir string, entrypoint string) (*taskfile.Taskfile, error) {
 			includedTask = taskfile.IncludedTaskfile{
 				Taskfile:       tr.Replace(includedTask.Taskfile),
 				Dir:            tr.Replace(includedTask.Dir),
+				Optional:       includedTask.Optional,
 				AdvancedImport: includedTask.AdvancedImport,
 			}
 			if err := tr.Err(); err != nil {
@@ -49,14 +51,19 @@ func Taskfile(dir string, entrypoint string) (*taskfile.Taskfile, error) {
 			}
 		}
 
-		if filepath.IsAbs(includedTask.Taskfile) {
-			path = includedTask.Taskfile
-		} else {
-			path = filepath.Join(dir, includedTask.Taskfile)
+		path, err := execext.Expand(includedTask.Taskfile)
+		if err != nil {
+			return err
+		}
+		if !filepath.IsAbs(path) {
+			path = filepath.Join(dir, path)
 		}
 
 		info, err := os.Stat(path)
 		if err != nil {
+			if includedTask.Optional {
+				return nil
+			}
 			return err
 		}
 		if info.IsDir() {

taskfile/task.go

@@ -19,9 +19,11 @@ type Task struct {
 	Vars          *Vars
 	Env           *Vars
 	Silent        bool
+	Interactive   bool
 	Method        string
 	Prefix        string
 	IgnoreError   bool
+	Run           string
 }
 
 func (t *Task) Name() string {
@@ -58,9 +60,11 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		Vars          *Vars
 		Env           *Vars
 		Silent        bool
+		Interactive   bool
 		Method        string
 		Prefix        string
 		IgnoreError   bool `yaml:"ignore_error"`
+		Run           string
 	}
 	if err := unmarshal(&task); err != nil {
 		return err
@@ -78,8 +82,10 @@ func (t *Task) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	t.Vars = task.Vars
 	t.Env = task.Env
 	t.Silent = task.Silent
+	t.Interactive = task.Interactive
 	t.Method = task.Method
 	t.Prefix = task.Prefix
 	t.IgnoreError = task.IgnoreError
+	t.Run = task.Run
 	return nil
 }

taskfile/taskfile.go

@@ -17,6 +17,7 @@ type Taskfile struct {
 	Tasks      Tasks
 	Silent     bool
 	Dotenv     []string
+	Run        string
 }
 
 // UnmarshalYAML implements yaml.Unmarshaler interface
@@ -32,6 +33,7 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 		Tasks      Tasks
 		Silent     bool
 		Dotenv     []string
+		Run        string
 	}
 	if err := unmarshal(&taskfile); err != nil {
 		return err
@@ -46,6 +48,7 @@ func (tf *Taskfile) UnmarshalYAML(unmarshal func(interface{}) error) error {
 	tf.Tasks = taskfile.Tasks
 	tf.Silent = taskfile.Silent
 	tf.Dotenv = taskfile.Dotenv
+	tf.Run = taskfile.Run
 	if tf.Expansions <= 0 {
 		tf.Expansions = 2
 	}

testdata/ignore_nil_elements/cmds/Taskfile.yml

@@ -0,0 +1,7 @@
+version: '3'
+
+tasks:
+  default:
+    cmds:
+      - echo "string-slice-1"
+      -

testdata/ignore_nil_elements/deps/Taskfile.yml

@@ -0,0 +1,11 @@
+version: '3'
+
+tasks:
+  default:
+    deps:
+      -
+      - task: dep
+
+  dep:
+    cmds:
+      - echo "string-slice-1"

testdata/ignore_nil_elements/includes/Taskfile.yml

@@ -0,0 +1,9 @@
+version: '3'
+
+includes:
+  inc: inc.yml
+
+tasks:
+  default:
+    cmds:
+      - task: inc:default

testdata/ignore_nil_elements/includes/inc.yml

@@ -0,0 +1,7 @@
+version: '3'
+
+tasks:
+  default:
+    cmds:
+      - 
+      - echo "string-slice-1"

testdata/ignore_nil_elements/preconditions/Taskfile.yml

@@ -0,0 +1,9 @@
+version: '3'
+
+tasks:
+  default:
+    preconditions:
+      -
+      - sh: "[ 1 = 1 ]"
+    cmds:
+      - echo "string-slice-1"

testdata/includes_optional/.gitignore

@@ -0,0 +1 @@
+*.txt

testdata/includes_optional/Taskfile.yml

@@ -0,0 +1,11 @@
+version: '3'
+
+includes:
+  included:
+    taskfile: TaskfileOptional.yml
+    optional: true
+
+tasks:
+  default:
+    cmds:
+      - echo "called_dep" > called_dep.txt

testdata/includes_optional_explicit_false/Taskfile.yml

@@ -0,0 +1,11 @@
+version: '3'
+
+includes:
+  included:
+    taskfile: TaskfileOptional.yml
+    optional: false
+
+tasks:
+  default:
+    cmds:
+      - echo "Hello, world!"

testdata/includes_optional_implicit_false/Taskfile.yml

@@ -0,0 +1,9 @@
+version: '3'
+
+includes:
+  included: TaskfileOptional.yml
+
+tasks:
+  default:
+    cmds:
+      - echo "Hello, world!"

testdata/run/.gitignore

@@ -0,0 +1 @@
+*.txt

testdata/run/Taskfile.yml

@@ -0,0 +1,24 @@
+version: '3.7'
+run: when_changed
+
+tasks:
+  generate-hash:
+    - rm -f hash.txt
+    - task: input-content
+      vars: { CONTENT: '1' }
+    - task: input-content
+      vars: { CONTENT: '2' }
+    - task: input-content
+      vars: { CONTENT: '2' }
+
+  input-content:
+    deps:
+      - task: create-output
+        vars: { CONTENT: '1' }
+    cmds:
+      - echo {{.CONTENT}} >> hash.txt
+
+  create-output:
+    run: once
+    cmds:
+      - echo starting {{.CONTENT}} >> hash.txt

variables.go

@@ -56,9 +56,11 @@ func (e *Executor) compiledTask(call taskfile.Call, evaluateShVars bool) (*taskf
 		Vars:        nil,
 		Env:         nil,
 		Silent:      origTask.Silent,
+		Interactive: origTask.Interactive,
 		Method:      r.Replace(origTask.Method),
 		Prefix:      r.Replace(origTask.Prefix),
 		IgnoreError: origTask.IgnoreError,
+		Run:         r.Replace(origTask.Run),
 	}
 	new.Dir, err = execext.Expand(new.Dir)
 	if err != nil {
@@ -89,34 +91,43 @@ func (e *Executor) compiledTask(call taskfile.Call, evaluateShVars bool) (*taskf
 	}
 
 	if len(origTask.Cmds) > 0 {
-		new.Cmds = make([]*taskfile.Cmd, len(origTask.Cmds))
-		for i, cmd := range origTask.Cmds {
-			new.Cmds[i] = &taskfile.Cmd{
+		new.Cmds = make([]*taskfile.Cmd, 0, len(origTask.Cmds))
+		for _, cmd := range origTask.Cmds {
+			if cmd == nil {
+				continue
+			}
+			new.Cmds = append(new.Cmds, &taskfile.Cmd{
 				Task:        r.Replace(cmd.Task),
 				Silent:      cmd.Silent,
 				Cmd:         r.Replace(cmd.Cmd),
 				Vars:        r.ReplaceVars(cmd.Vars),
 				IgnoreError: cmd.IgnoreError,
-			}
+			})
 		}
 	}
 	if len(origTask.Deps) > 0 {
-		new.Deps = make([]*taskfile.Dep, len(origTask.Deps))
-		for i, dep := range origTask.Deps {
-			new.Deps[i] = &taskfile.Dep{
+		new.Deps = make([]*taskfile.Dep, 0, len(origTask.Deps))
+		for _, dep := range origTask.Deps {
+			if dep == nil {
+				continue
+			}
+			new.Deps = append(new.Deps, &taskfile.Dep{
 				Task: r.Replace(dep.Task),
 				Vars: r.ReplaceVars(dep.Vars),
-			}
+			})
 		}
 	}
 
 	if len(origTask.Preconditions) > 0 {
-		new.Preconditions = make([]*taskfile.Precondition, len(origTask.Preconditions))
-		for i, precond := range origTask.Preconditions {
-			new.Preconditions[i] = &taskfile.Precondition{
+		new.Preconditions = make([]*taskfile.Precondition, 0, len(origTask.Preconditions))
+		for _, precond := range origTask.Preconditions {
+			if precond == nil {
+				continue
+			}
+			new.Preconditions = append(new.Preconditions, &taskfile.Precondition{
 				Sh:  r.Replace(precond.Sh),
 				Msg: r.Replace(precond.Msg),
-			}
+			})
 		}
 	}