humblearab

Just came across this after copying the rewrite rules from the plugin.

If replacing {1,4} with + fixes the problem, it suggests that the {1,4} quantifier might be interpreted incorrectly by Nginx. To use {1,4} correctly, you should escape the curly braces with backslashes:

However, using + as a replacement for {1,4} works if you only need to match one or more digits instead of a specific range. The + quantifier matches one or more of the preceding elements, which simplifies the regular expression.

Regex headache again 😅

The correct rules, that would work by default would be

rewrite ^/.*-misc?\.xml$ "/index.php?xml_sitemap=params=$2" last;
rewrite ^/.*-misc?\.xml\.gz$ "/index.php?xml_sitemap=params=$2;zip=true" last;
rewrite ^/.*-misc?\.html$ "/index.php?xml_sitemap=params=$2;html=true" last;
rewrite ^/.*-misc?\.html\.gz$ "/index.php?xml_sitemap=params=$2;html=true;zip=true" last;
rewrite ^/.*sitemap.*(?:\d\{1,4\}(?!-misc)|-misc)?\.xml$ "/index.php?xml_sitemap=params=$2" last;
rewrite ^/.*sitemap.*(?:\d\{1,4\}(?!-misc)|-misc)?\.xml\.gz$ "/index.php?xml_sitemap=params=$2;zip=true" last;
rewrite ^/.*sitemap.*(?:\d\{1,4\}(?!-misc)|-misc)?\.html$ "/index.php?xml_sitemap=params=$2;html=true" last;
rewrite ^/.*sitemap.*(?:\d\{1,4\}(?!-misc)|-misc)?\.html\.gz$ "/index.php?xml_sitemap=params=$2;html=true;zip=true" last;

I think the {1,4} is meant to capture part of the sitemap where it might be something like product-sitemap1234.xml