NPE on save configuration for build job

[nwillems]

I believe this is caused by a missing value in the retest field when configuring the job. Should this field have a default value, or maybe this should be added to the tutorial in the README?

https://github.com/janinko/ghprb/blob/master/src/main/java/org/jenkinsci/plugins/ghprb/GhprbRepo.java#L49

Stacktrace:
Caused by: java.lang.NullPointerException
at java.util.regex.Pattern.(Pattern.java:1149)
at java.util.regex.Pattern.compile(Pattern.java:840)
at org.jenkinsci.plugins.ghprb.GhprbRepo.(GhprbRepo.java:49)
at org.jenkinsci.plugins.ghprb.GhprbTrigger.start(GhprbTrigger.java:73)
at org.jenkinsci.plugins.ghprb.GhprbTrigger.start(GhprbTrigger.java:33)
at hudson.model.AbstractProject.submit(AbstractProject.java:1848)
at hudson.model.Project.submit(Project.java:197)

EDIT: This might have gone a little fast - the retest has a default value and is stored in the system conf page, but it fails when I try and save a build job

[janinko]

If you first configure the system-wide config, there should be default value.
Try to go into: Manage Jenkins -> Configure System -> "Github pull requests builder" section and under Advanced check the phrase fields.

[janinko]

I believe this should be fixed now in version 1.4