Issue a \r in fish_title, except when executing it for the prompt

fish_title currently outputs some escaped text, which can confuse
the line driver (#2453). Issue a carriage return so the line driver
knows we are at the beginning of the line, unless we are writing
the title as part of the prompt. In that case, we may have text from
the previous command still on the line and we don't want to move the
cursor.

Fixes #2453

0 files changed, 0 insertions, 0 deletions