CVSROOT:        /cvs
Module name:    src
Changes by:     schwa...@cvs.openbsd.org        2018/04/08 20:31:37

Modified files:
        usr.bin/mandoc : roff.c 
        regress/usr.bin/mandoc/roff/string: Makefile 
Added files:
        regress/usr.bin/mandoc/roff/string: undef.in undef.out_ascii 
                                            undef.out_lint 

Log message:
Using an undefined string or macro will cause it to be defined as empty.
Observed by Werner Lemberg on Nov 14, 2011
and rotting on my TODO list ever since.

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