Commits on Sep 5, 2018

1. Remove empty expression …

   Running unit tests tmain and units via 'make check' the empty expression
   .{0} from the matching group in parsers/robot.c was causing FreeBSD libc
   regcomp to produce an error: empty (sub)expression.
   
   tmain would fail for some checks while units would fail for robots checks.
   
   Removing the emptry expression .{0} "match anything exactly zero times"
   fixes this issue and all expected tests pass for both tmain and units.
   
   Testing the same change, removing the expression .{0} from the
   matching group, on centos7 does not appear to have any regessions.
   
   This reverts the following commit
   universal-ctags@81a4593
   
   That was created for the following issue:
   universal-ctags#1571 (comment)
   
   It's possible there's some regression for macOS however macOS on Travis
   doesn't seem to have any issues.

   

   derekschrock committed Sep 5, 2018
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