[FELIX-5449] gogo jline shell completely dies on unexpected tab character

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: Gogo JLine
• Assignee: Guillaume Nodet
• Reporter: Bram Pouwelse
• Created: 15/Dec/16 10:31
• Updated: 18/Oct/17 12:31
• Resolved: 18/Oct/17 12:31

Description

Had a quick look at the new org.apache.felix.gogo.jline 1.0.2 that is to be released in an Eclipse project. When a non exising comand is followed by a tab character the console completely dies with the stacktrace below.

To reproduce just type l [tab] and hit return

g! l    
gogoArithmeticException: / by zero
java.lang.ArithmeticException: / by zero
    at org.jline.reader.impl.LineReaderImpl.toColumns(LineReaderImpl.java:4293)
    at org.jline.reader.impl.LineReaderImpl.toColumns(LineReaderImpl.java:4268)
    at org.jline.reader.impl.LineReaderImpl.computePost(LineReaderImpl.java:4232)
    at org.jline.reader.impl.LineReaderImpl.doList(LineReaderImpl.java:4082)
    at org.jline.reader.impl.LineReaderImpl.doComplete(LineReaderImpl.java:3768)
    at org.jline.reader.impl.LineReaderImpl.expandOrComplete(LineReaderImpl.java:3516)
    at org.jline.reader.impl.LineReaderImpl.readLine(LineReaderImpl.java:533)
    at org.apache.felix.gogo.jline.Shell.runShell(Shell.java:407)
    at org.apache.felix.gogo.jline.Shell.gosh(Shell.java:329)
    at org.apache.felix.gogo.jline.Activator.lambda$startShell$0(Activator.java:137)
    at java.lang.Thread.run(Thread.java:745)