Prefer setvbuf() to setlinebuf() for portability; ok deraadt@
Remove dead code, from Thomas Adam.
Check ZOOMED flag on window.
Another fix for insertion from Balazs Kezes. On insertion, size the line
just enough for the inserted characters.
Permit option values to be used in formats.
Add -F to if-shell to allow it to be used to check for format or option
values rather than executing a command.
Merge branch 'obsd-master'