Re: concat vs format

[Jean-Christophe Helary]

> On Dec 9, 2018, at 23:15, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> 
>>       (cssRoot (concat siteRoot "css/" (format-time-string "%Y" myToday) 
>> "/"))
> 
> BTW, it's recommended to use `expand-file-name` instead of `concat` to
> combine a directory name and a relative file name.

I'll try this, but would that explain why my concat doesn't work ?

> E.g.
> 
>     (cssRoot (file-name-as-directory
>               (expand-file-name (format-time-string "%Y" myToday)
>                (expand-file-name "css" siteRoot))))

Jean-Christophe Helary
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