Bug#37997: ispell stops

[Eckard Deichsel <deichsel@cabbage.e-technik.uni-ulm.de>]

Package: ispell
Version: 3.1.20-0.4

When I checked the spelling of an 8.8kB LaTeX document the program stoped
before finishing, without error-information. It is reproducible at the
same site in the text. When I removed two lines out of the text, ispell
stoped two lines later, too.
I used the command: ispell -t documentname
The same for: ispell documentname

When I used: ispell -n documentname
ispell worked until end of file but this option is not good for LaTeX
files.