50ababbd55
Acme tracks the most recent typing insertion point and the home and end keys stop there on their way up to the top or down to the bottom of the file. That point should be iq1, and it should be adjusted properly so that it's always between 0 and t->file->b.nc inclusive. (This is all code from an external contributor, years old at this point but new since Plan 9.) Somehow, sometimes iq1 ends up a little beyond b.nc, and when passed to textbacknl it crashes acme in bufread. I can't see how that can happen but if it does, avoid the crash. It's tempting to pull the insertion point code out entirely but this is a little less invasive and should fix things for now. TBR=rsc https://codereview.appspot.com/107730043
This is a port of many Plan 9 libraries and programs to Unix.
* Installation
To install, run ./INSTALL. It builds mk and then uses mk to
run the rest of the installation.
For more details, see install(1), at install.txt in this directory
and at http://swtch.com/plan9port/man/man1/install.html.
* Documentation
See http://swtch.com/plan9port/man/ for more documentation.
(Documentation is also in this tree, but you need to run
a successful install first. After that, "9 man 1 intro".)
Intro(1) contains a list of man pages that describe new features
or differences from Plan 9.
* Helping out
If you'd like to help out, great! The TODO file contains a small list.
If you port this code to other architectures, please share your changes
so others can benefit.
Please use diff -u or CVS (see below) to prepare patches.
* CVS
You can use CVS to keep your local copy up-to-date as we make
changes and fix bugs. See the cvs(1) man page here ("9 man cvs")
for details on using cvs.
* Contact
Russ Cox <rsc@swtch.com>