deroff: fix out-of-bounds access if runes above 0X80 are inside EQ clauses

trim button & modbutton images

make sure border has correct height

src/cmd/fontsrv: pad subfile names to support correct file length For fonts with subfiles that go beyond the xffff range, the font file size calculation is incorrect, since lines beyond that range have additional characters. This patch pads all of the ranges and subfont names with leading zeros in order to keep them all lines the same length and fixes the font file length calculation.

acme: Don't move the mouse if button depressed Fixes #19

rc: remove dead code. kencc warns that this code is dead.

man/man3/stat.3: Update man page to match include/libc.h. Resolves Issue #530

INSTALL: build arm64 binaries on arm64 Macs If there is any x86 binary in the chain of parent processes from the current one, then uname -m prints x86_64 and clang defaults to building x86_64 binaries. Detect arm64 using the kernel version and force building an arm64 toolchain instead of perpetuating x86. This is particularly important when the user shell is rc, which has been built for x86, because then rebuilding under rc continues to use x86.

src/cmd/acme: provide info on presense or absence of undo history (#528) It's sometimes useful to know whether there's been editing activity in a window. This PR adds that information to the ctl file. Change-Id: I21a342ac636dd5c7701b3ed560e3526867329c2c

cmd/auxstats: improve network device name matcher in Linux

cmd/auxstats: improve wireless interface name matcher in Linux

mk: provide a mechanism to default to `rc` For cross-compiling plan9 from Unix, provide a way to force `mk` to use `rc` instead of `sh` without setting `MKSHELL` in individual `mkfile`s. If the environment variable `FORCERCFORMK` is set, `mk` will default to using `rc`, not `sh`. Signed-off-by: Dan Cross <cross@gajendra.net>

sam: fix spurious overwrite message Fixes: % sam -d -. w foo foo: (new file) #0 w foo ?warning: write might change good version of `foo'

acme: fix extra print args

lib9p: Fix compile error commit 385a6d5877258cee0cac6151e6359c9206006b01 removed src/lib9p/_post.c from the code base, but overlooked removing a reference to the _post.o object file from the src/lib9p/mkfile. This results in lib9p failing to compile: * Running on Darwin... * Compiler version: Apple clang version 12.0.5 (clang-1205.0.22.11) * Building mk... * Building everything (be patient)... >>> mk: don't know how to make '/Users/sasha/plan9port_fork/lib/lib9p.a(_post.o)' in /Users/sasha/plan9port_fork/src/lib9p mk: for i in ... : exit status=exit(1) Remove _post.o from the list of dependent object files from src/lib9p/mkfile to have lib9p compile. Fixes: 385a6d587725 ("lib9p: Remove postmountsrv (#505)")