55140: fix pointer math in join_sub

The original report states:
      mkdir -p /tmp/x && cd /tmp/x && touch ab-xyFOO ac-xyBAR
      cat -xy<TAB>

    autocompletes to `aB-xy`, and

      mkdir -p /tmp/t && cd /tmp/t && touch 1abc 2abc
      cat a<TAB>

    autocompletes to `Aabc`.

check_cmdata has already advanced md->str by md->len when sfx is true,
so doing it again here is incorrect. bld_line then wants a pointer to
the start of the string, so subtract the length when sfx is true, since
it is an end pointer in that case (as is done in many other places in
this function already).

0 files changed, 0 insertions, 0 deletions