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Date: Sun, 15 Mar 2020 17:55:00 +0000
From: "Ethan Gardener" <eekee57@fastmail.fm>
To: 9front@9front.org
Subject: test -x broken & rc-httpd has broken workaround
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X-Bullshit: asynchronous module cache YAML reduce/map firewall-scale optimizer 

term% test -x static ; echo $status
test 13436: false
term% ls -ld static
d-rwxrwxr-x M 24 ethan adm 0 Mar 15 14:58 static
term% man 1 test | grep -- -x
          -x file    True if the file exists and has execute permis-
term% 

/rc/bin/rc-httpd/handlers/dir-index has a broken workaround for this. the workaround is to omit a necessary -a like so:
    if(! test -r $full_path -x $full_path){
it should be:
    if(! test -r $full_path -a -x $full_path) {
evidently, omitting -a (and) makes it default to logical or, breaking the logic of this line. (this default in the absence of -a or -o is undocumented in plan 9 & gnu.) the indended logic (with -a) is useful, it helps with debugging folder permissions.