Bug#429543: PS_show_boxed() segfaults

[Johannes Frank]

Package: pslib1
Version: 0.2.7-1
Severity: important

With the "parbreak" parameter set to "true" (which is the default)  
PS_show_boxed() segfaults if fed with text containing a single new line  
character in an otherwise empty line.
e.g. "foo\n\nbar" (with linebreak==true)
or "foo\n\n\nbar" (with linebreak==false)
The single new line character and all following new line characters are  
reported by pslib as not being in the input encoding vector prior to  
the crash.

This bug is probably years old.