Log Message:
According to http://www.kdstevens.com/~stevens/ispell-faq.html#bslash:
ispell 3.1.2- contains an irritating bug when using latex that causes all
sorts of problems the backslash is used. [...]
The patch provided fixes these problems.

This problem was noted and patches to the Makefile were supplied by
Marko Schuetz (MarkoSchuetz at web dot de) in PR pkg/17418 - thanks!

This closes PR# pkg/17418.