https://issues.apache.org/bugzilla/show_bug.cgi?id=48980
Summary: complete-ant-cmd.pl can cache empty completion list if
ant fails with OOM
Product: Ant
Version: 1.7.1
Platform: All
OS/Version: Mac OS X 10.4
Status: NEW
Severity: minor
Priority: P2
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
complete-ant-cmd.pl is a helper script which allows BASH and KSH users to
complete ant targets using shell completion facility.
It works by calling ant -p to get list of possible targets, and caching the
result. The cached result is stored in working directory, in file
".ant-targets-XXX.xml" (XXX stands for the build file name)
Unfortunately, if ant -p fails (e.g. with OOM exception), empty completion list
is cached for the directory.
Once this happens, the completion stops working.
Steps to reproduce (bash):
1. Associate complete-ant-cmd.pl with the bash completion facility:
complete -C $ANT_HOME/bin/complete-ant-cmd.pl ant
2. create build file build.xml, containing the following input:
<project name="test">
<target name="test"/>
</project>
2. verify that ant completion works
type ant and hit TAB (assuming TAB is the completion key)
Expected result: the command line should be completed to
$ ant test
3. Delete file ./.ant-targets-build.xml
4. Simulate exception in ant. One way to do so would be setting ANT_HOME to
wrong location:
export ANT_HOME=/tmp
5. type ant and hit TAB
Expected result: ant Exception in thread "main"
java.lang.NoClassDefFoundError: org/apache/tools/ant/launch/Launcher
Expected result - 0 sized file called ./.ant-targets-build.xml will be
created.
6. restore ANT_HOME to original value
7. type ant and hit TAB
Completion will not work.
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