I tried to specify a custom log folder for WildFly, by overriding property jboss.server.log.dir
https://docs.jboss.org/author/display/WFLY8/Command+line+parameters

But it only works for folder without space in path. The ones with space when used with "jboss.server.log.dir" will prevent wildfly from starting.

Working:
C:\>start C:\wildfly-8.1.0.Final\bin\standalone.bat
C:\>start C:\wildfly-8.1.0.Final\bin\standalone.bat -Djboss.server.log.dir="C:\Windows"

Not working (server can not start):
C:\>start C:\wildfly-8.1.0.Final\bin\standalone.bat -Djboss.server.log.dir="C:\Program Files"

(More info:
JBoss AS 7.1 works:
C:\> start C:\jboss-as-7.1.1.Final\bin\standalone.bat -Djboss.server.log.dir="C:\Program Files"

JBoss EAP 6 and WildFly 8.0 not working either:
C:\> start C:\jboss-eap-6.2\bin\standalone.bat -Djboss.server.log.dir="C:\Program Files"
C:\> start C:\wildfly-8.0.0.Final\bin\standalone.bat -Djboss.server.log.dir="C:\Program Files"

Aready tried setting jboss.server.log.dir="C:\Program Files" in JAVA_OPTS but did not work either. Should have been fixed in WFLY-1358 or WFLY-2348.
)