Wildcards don't work with vars specified in task includes

[robak86]

Description

Given this config file:

version: '3'

includes:
  'stack:*':
    taskfile: ./Taskfile.stack.yml
    vars:
      ENV: '{{index .MATCH 0}}'

the app raises the following error:

template: :1:2: executing "" at <index .MATCH 0>: error calling index: index of untyped nil

The matching using index .MATCH 0 works inside the included Taskfile.stack.yml, but since the configuration allows passing vars for the included task files, would it be possible to support index .MATCH in the includes vars section as well? That enables a clean approach where included tasks don't have to know how to extract the variables.

Version

3.49.1

Operating system

MacOS 15.7.4

Experiments Enabled

No response

Example Taskfile

[trulede]

I don't quite understand what you want to achieve. Perhaps a before/after example to clarify?

[robak86]

Sorry for the unclear description. I could have been more precise.

The goal is to run tasks like task stack:production:deploy or task stack:staging:deploy, where the matched environment name (production, staging, …) is passed as a variable into the included taskfile.

Current workaround (works, but leaks an implementation detail):

Taskfile.yml:

version: '3'

includes:
  'stack:*':
    taskfile: ./Taskfile.stack.yml

Taskfile.stack.yml:

version: '3'

tasks:
  deploy:
    cmds:
      - echo "Deploying to {{index .MATCH 0}}"

The included taskfile has to use index .MATCH 0 directly — it needs to know it was included via a wildcard and which capture group to read.

---

Desired approach (not currently working):

Taskfile.yml:

version: '3'

includes:
  'stack:*':
    taskfile: ./Taskfile.stack.yml
    vars:
      ENV: '{{index .MATCH 0}}'

Taskfile.stack.yml:

version: '3'

tasks:
  deploy:
    cmds:
      - echo "Deploying to {{.ENV}}"

The included taskfile just uses a plain {{.ENV}} variable — it doesn't need to know anything about wildcards or .MATCH. The extraction is done at the includes level, where it conceptually belongs.

Currently this fails with index of untyped nil because .MATCH isn't available when the vars block under includes is evaluated. The request is to make .MATCH available in that context, the same way it already is inside the included taskfile itself.