Re: How to replace format-like codes in a string?

[Marcin Borkowski <mbork@mbork.pl>]

On 2016-11-11, at 09:48, Joost Kremers <joostkremers@fastmail.fm> wrote:

> On Fri, Nov 11 2016, Marcin Borkowski wrote:
>> I want to write a function like `format', which gets a string 
>> with some
>> codes embedded (like "%a", "%b" etc., and "%%" to get a 
>> percentage
>> sign), and convert them to something (say, "%a" to the value of 
>> var-a,
>> "%b" to var-b etc.).  Is there any facility in Elisp to help 
>> with that
>> or do I have to do a search-and-replace manually?
>
> See `format-spec' and `format-spec-make'.

Thanks a lot!  That was exactly what I needed.  (I mean, `format-spec';
I'm not sure why I would need `format-spec-make', assuming that I can
just use backquote and comma.)

Best,

-- 
Marcin Borkowski