[Bug 944546] [NEW] StringIndexOutOfBoundsException in HelpFormatter.findWrapPos

[Andrew]

Public bug reported:

This bug has been fixed upstream in version 1.3 Could you look at
backporting this fix or updating to the latest version?

https://issues.apache.org/jira/browse/CLI-193

"You should be able to get it to throw with a call like this:

findWrapPos( "hello", 3, 0 ); // should return -1

The exception gets thrown whenever the passed-in string does not contain
any spaces, tabs, or newlines. It looks like line 914 was also expecting
line 908 to have a <.

Also, I think there are other bugs. In this call:

findWrapPos( "helloooo\noo\ngoodbye", 6, 7 ); // should return 8

we want it to short circuit and return the first newline if there is one
in the substring starting at 7 with width 6 ("o\noo\ng"), and so it
should return the index of the first '\n', which is 8. However, on lines
876 and 877, it's doing "pos <= width", instead of "pos <=
startPos+width", so it won't return, and it will end up (incorrectly, I
think) returning the index of the second newline's position. And once
you fix lines 876 and 877, it's going to return 9 instead of 8, which I
think is incorrect. The other return statements return pos, not pos+1,
and I think line 879 should do the same."

** Affects: libcommons-cli-java (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  StringIndexOutOfBoundsException in HelpFormatter.findWrapPos

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