On Fri, Dec 11, 2020 at 10:06 AM Lentes, Bernd <bernd.len...@helmholtz-muenchen.de> wrote: > > ----- On Dec 9, 2020, at 6:02 PM, Eric Covener cove...@gmail.com wrote: > > Hi Eric, > > thanks for your answer. > Now i'm struggling with RewriteRule > ^(?:build|tests|config|lib|3rdparty|templates)/.* - [R=404,L] > > Most is clear. The content of the parentheses () like build, tests .. is > or-conjuncted by the pipe |, > so only one of the patterns must appear. > But what is ?: ?
It makes the () "non-capturing" meaning if you had other () sequences this or-conjunction would not eat up $1. In the case above it is unnecessary since there is no other capture. > The question mark normally is a repeater for the prior character. But there > is no one. > And wherefore is the colon ? It's a special case when following "(". It allows the matching/capturing to be customized a few different ways (man pcresyntax has a concise list of the flags that follow "(?") > I gave https://perldoc.perl.org/perlre#Metacharacters a chance. It seems the > ?: says that a match for (build|tests|config|lib|3rdparty|templates) > can't be used as a backreference. Right ? Where is the purpose of that ? yes, just to avoid eating up $1. But some people do it out of habit when they use () just to group "|". > in my error_log with setting "LogLevel info rewrite:trace2": > [Fri Dec 11 15:44:50.666869 2020] [rewrite:trace1] [pid 3408] > mod_rewrite.c(483): [client 146.107.126.166:57329] 146.107.126.166 - - > [nc-mcd.helmholtz-muenchen.de/sid#7f9158e4f700][rid#7f9155a2a0a0/initial] > [perdir /var/www/nextcloud/] pass through /var/www/nextcloud/ > > What is sid and rid ? server (vhost) id and request id i believe. Usually not so useful. The /initial meant it's not a "subrequest" (a way apache modules sometimes make an internal request related to the real request to probe for things) --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@httpd.apache.org For additional commands, e-mail: users-h...@httpd.apache.org