On Tuesday, June 23, 2020 at 11:56:34 AM UTC-5, Guido Milanese wrote:
>
> In a project I am developing, I have written some boilerplate files to be 
> used as headers for Markdown/LaTeX documents. One of the lines contains the 
> document date, and ideally it should be:
>
> date: <TODAY>
>
> I know how to insert date from command line, but is it possible to embed 
> the command in the boilerplate file and have it transformed into the real 
> date? I tried autocmd to no success -- clearly I have not really understood 
> how to use it!
> The same applies to other fields (such as AUTHOR), but the DATE field is 
> the most important one.
> Thank you!
> guido (Northern Italy)
>
>
>
You have some good suggestions already that use hard-coded substitute 
commands in the autocmd. A more versatile method would be to embed the 
expressions you want evaluated right in your template file: 
https://vim.fandom.com/wiki/Use_eval_to_create_dynamic_templates

Of course there are also a wide variety of template plugins that might be a 
good fit for you, too.

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