no-tabs Rule Does Not Recognize lineinfile Inside block

[mischif]

Summary

I have a lineinfile task with a tab that initially passed linting without issue, but after putting the task inside a block I now get a lint error about no-tabs.

Issue Type

• Bug Report

OS / ENVIRONMENT

ansible-lint 25.7.0 using ansible-core:2.17.13 ansible-compat:25.6.0 ruamel-yaml:0.18.14 ruamel-yaml-clib:0.2.7

• ansible installation method: pip
• ansible-lint installation method: pip

STEPS TO REPRODUCE

---
- name: Example playbook
  hosts: all
  tasks:
    - name: Example block
      block:
        - name: Do not trigger the rule
          ansible.builtin.lineinfile:
            path: some.txt
            regexp: "^\t$"
            line: "string with \t inside"

Desired Behavior

The playbook should have no linting failures.

Actual Behavior

Please give some details of what is happening. Include a minimum complete
verifiable example with:

• minimized playbook to reproduce the error
• the output of running ansible-lint including the command line used
• if you're getting a stack trace, also the output of
  ansible-playbook --syntax-check playbook

$ ansible-lint --profile production badbook.yml 

WARNING  Listing 2 violation(s) that are fatal
no-tabs: Most files should not contain tabs.
badbook.yml:10:21 Task/Handler: Example block

no-tabs: Most files should not contain tabs.
badbook.yml:11:19 Task/Handler: Example block

Read documentation for instructions on how to ignore specific rule violations.

# Rule Violation Summary

  2 no-tabs profile:basic tags:formatting

Failed: 2 failure(s), 0 warning(s) on 1 files. Profile 'production' was required, but 'min' profile passed.

[alisonlhart]

Thanks @mischif for this issue. I have been able to reproduce this.

We'd welcome a PR to resolve this.