Terraform (HCL) (*.tf): new parser

[antonysouthworth-halter]

Add support for Terraform (HCL) files.

Related:

• https://github.com/preservim/tagbar/issues/757

TODO

• [ ] add unit tests
• [ ] update documentation
  • [ ] manpages
  • [ ] codebase

[antonysouthworth-halter]

Have opened this as a quick thing, please advise if there are other things I need to do before merging (I read through https://docs.ctags.io/en/latest/optlib.html but may have missed some things).

[antonysouthworth-halter]

@masatake thank you for fast and thorough review 😄, I will address comments as/when I can.

@juliosueiras apologies, perhaps I should have talked to you first? 😅

[juliosueiras]

@antonysouthworth-halter no, thats fine

[tonglil]

I was able to add locals parsing if this PR still has any traction.

[masatake]

@tonglil, feel free to make a new pull request that includes the changes of this pull request. (It means you take over this pull request.)

[masatake]

The biggest reason I didn't merge this is there is no test case. @tonglil do you have an interest in polishing this pull request?

[tonglil]

Sorry, I will not be able to contribute to this PR.

[Haggus]

@masatake I'd like to take over and finish this PR

[masatake]

@Haggus You are welcome. optlib/terraform.c is automatically generated by misc/optlib2c. So what you have to edit is optlib/terraform.ctags. Test cases are needed.

[antonysouthworth-halter]

thanks @Haggus , unfortunately I never got time to come back to this. @masatake should we close this PR in favour of #3683 ?

[masatake]

I will close this via #3684.

[masatake]

@antonysouthworth-halter, thank you.