Description of problem:

xmodmap crashes with segmentation fault when parsing a certain strings
like

xmodmap -e ' keycode  85  =   6 '

In my case, xmodmap is a part of xorg-x11-6.8.1-12.

How reproducible:

always

Steps to Reproduce:
1. run
xmodmap -e ' keycode  85  =   6 '
  
Actual results:
The result is segmentation fault

Expected results:
Flawless behaviour.

Additional info:
If space in the parsed string is ommited or added, the segmentation
fault does not occur. For example
xmodmap -e ' keycode  85   =   6 '
works fine.