Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/796#issuecomment-109997612
The second example was a positive example. Trailing comments are removed
correctly. However, many different characters can be used for comments (what is
not good from my point of view):
mjsax@T420s-dbis-mjsax:~$ SLAVE="host|comment"; if [[ "$SLAVE" =~
^([0-9a-zA-Z/.-]+).*$ ]] ; then SLAVE="${BASH_REMATCH[1]}"; fi; echo $SLAVE
host
mjsax@T420s-dbis-mjsax:~$ SLAVE="host@comment"; if [[ "$SLAVE" =~
^([0-9a-zA-Z/.-]+).*$ ]] ; then SLAVE="${BASH_REMATCH[1]}"; fi; echo $SLAVE
host
mjsax@T420s-dbis-mjsax:~$ SLAVE="host comment"; if [[ "$SLAVE" =~
^([0-9a-zA-Z/.-]+).*$ ]] ; then SLAVE="${BASH_REMATCH[1]}"; fi; echo $SLAVE
host
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