updated for version 7.4.685 Problem: When there are illegal utf-8 characters the old regexp engine may go past the end of a string. Solution: Only advance to the end of the string. (Dominique Pelle)

Tests for file with some lines ending in CTRL-M, some not

STARTTEST
:set ta tx
:e!
:$-3,$w! test.out
:qa!
ENDTEST

this lines ends in a
this one doesn't
this one does
and the last one doesn't