3afdb4ff04
tscrollup and tscrolldown do not use tsetdirt, but their code is
equivalent to
tsetdirt(orig, term.bot-n);
tsetdirt(orig+n, term.bot);
tclearregion also marks cleared lines as dirty.
In tscrolldown it sets lines from term.bot-n+1 to term.bot dirty, and in
tscrollup it sets lines from orig to orig+n-1 dirty.
In both functions all lines from orig to term.bot are effectively set
dirty, but in tscrolldown lines from orig+n to term.bot are set dirty
twice, and in tscrollup lines from orig to term.bot-n are set dirty
twice.
These patches make it clear which lines are set dirty and sets them
dirty once in each funciton.
st - simple terminal
--------------------
st is a simple virtual terminal emulator for X which sucks less.
Requirements
------------
In order to build st you need the Xlib header files.
Installation
------------
Edit config.mk to match your local setup (st is installed into
the /usr/local namespace by default).
Afterwards enter the following command to build and install st (if
necessary as root):
make clean install
Running st
----------
If you did not install st with make clean install, you must compile
the st terminfo entry with the following command:
tic -s st.info
See the man page for additional details.
Credits
-------
Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.