Nginx bug when mixing map and try_files ?

Marcin Wanat marcin.wanat at
Wed Oct 7 18:35:20 UTC 2020


On Wed, Oct 7, 2020 at 8:08 PM Francis Daly <francis at> wrote:

> $1 may not mean what you want it to mean, when more than one regex-thing
> is involved. And "map" can be a regex-thing.
> If you change the location regex to whatever your engine's version of
> "save this in a named variable" is, then use that named variable in the
> try_files line, you may have better luck.
> Perhaps:
>   location ~ ^/imgs/(?P<numbers>[0-9]*)/(.*)$ {
> and use $numbers instead of $1.
> When nginx needs to know the value of $webp_suffix, the "map" is used,
> which messes with your $1.
> Then when nginx substitutes in the value of $1, it is not what it was
> from the regex location.
> So it all Just Works when $webp_suffix does not need to be read.
This is exactly the problem! Thank you!

Marcin Wanat
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