# General questions - git archive a .j2 file with keyword expansion in the header section

2 messages from 2021-08-19 to 2021-08-19. Participants: Lin, Nathan (GSE), Jeff King.
Thread: https://gitlist.dev/t/56328

## Lin, Nathan (GSE), 2021-08-19 21:28

Subject: General questions - git archive a .j2 file with keyword expansion in the header section
Message-ID: <DF4PR8401MB0795EE7D2828A45289295D3892C09@DF4PR8401MB0795.NAMPRD84.PROD.OUTLOOK.COM>
URL: https://gitlist.dev/e/DF4PR8401MB0795EE7D2828A45289295D3892C09%40DF4PR8401MB0795.NAMPRD84.PROD.OUTLOOK.COM

```
Hello Devs,

Got a question on using git keyword expansion on a .j2 template file. Keyword expansion does not seem to work with .j2 file. Please see below a snippet of my attempt to archive test.cfg.j2 containing git keyword expansions in the header. It works if I changes the .j2 file extension to something else, say .yaml. I have not been able to find any information about issue. Can you please review and advise? Thank you.


[root@da ~]# cat Ansible_Playbooks/Day0/roles/hpe-bm-kickstart/templates/test.cfg.j2 
##############################################################################
# Author : $Format: %an <%ae>$
# Commit : $Format: %h$
# Date   : $Format: %cs$
#
##############################################################################

[root@da ~]# git archive --format=tgz HEAD --output=test.tar.gz Ansible_Playbooks/Day0/roles/hpe-bm-kickstart/templates/test.cfg.j2
[root@da ~]# tar -xf test.tar.gz  --directory test
[root@da ~]# cat test
test/        test.tar.gz  
[root@da ~]# cat test
test/        test.tar.gz  
[root@da ~]# cat test/Ansible_Playbooks/Day0/roles/hpe-bm-kickstart/templates/test.cfg.j2 
##############################################################################
# Author : $Format: %an <%ae>$
# Commit : $Format: %h$
# Date   : $Format: %cs$
#
##############################################################################

[root@da ~]#



Regards,
Nathan Lin
Solutions Engineer
Global Sales Engineering (GSE)
https://hpe.com/info/askgse (Internal site)
+1 (281) 204-4077 Office

Houston, TX
hpe.com


```

## Jeff King, 2021-08-19 22:28

Subject: Re: General questions - git archive a .j2 file with keyword expansion in the header section
Message-ID: <YR7a8vKrYgFJof0D@coredump.intra.peff.net>
URL: https://gitlist.dev/e/YR7a8vKrYgFJof0D%40coredump.intra.peff.net
In-Reply-To: <DF4PR8401MB0795EE7D2828A45289295D3892C09@DF4PR8401MB0795.NAMPRD84.PROD.OUTLOOK.COM>

```
On Thu, Aug 19, 2021 at 09:28:11PM +0000, Lin, Nathan (GSE) wrote:

> Got a question on using git keyword expansion on a .j2 template file.
> Keyword expansion does not seem to work with .j2 file. Please see
> below a snippet of my attempt to archive test.cfg.j2 containing git
> keyword expansions in the header. It works if I changes the .j2 file
> extension to something else, say .yaml. I have not been able to find
> any information about issue. Can you please review and advise? Thank
> you.

Do you have .gitattributes entries that tell Git it should apply the
"export-subst" attribute to any files? If so, does it cover .yaml files,
but not .j2?

-Peff

```