Thirteen build artifacts were tracked: ten .bin files, a disk image, and the
text file that had been put on it. Every one is produced by 'make' in
Programs/ from a source file that is also tracked.
NINE OF THE TEN BINARIES DISAGREED WITH THEIR OWN SOURCE, including
Programs/CosmOS/Bin/cosmos.bin - the operating system. Only hello.bin still
matched, and that by accident.
That is worse than shipping no binary at all. A repository holding both a
source file and a stale build of it has two answers to what a program does,
and the wrong one is the one that runs. Somebody reads the source, runs the
binary, and sees behaviour that is not in the code with nothing to tell them
why.
Nothing referenced any of them - not the makefiles, not the tests, not the
manuals. Checked before removing, and checked after: the suite passes, and a
clean clone with all of them gone builds both tools and assembles every
program from source alone.
.gitignore now covers *.bin, *.sbx and *.img, unanchored, because a build
output may appear anywhere a source file lives.
Programs/CosmOS/Bin/ held cosmos.bin, disk.img and a 17 byte hello.txt that
existed only to be put on that image. It was a snapshot of a demo from
before Tests/makedisks.sh built its own fixtures, and it goes with them.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E2JrLzFvuFX9fgi1LDRjrW
Without a leading slash a pattern matches at any depth, so the rules for
the three built binaries also matched directories: "Assembler" ignored
Source/Assembler. The files already in it stayed tracked, which is why
nothing had gone wrong yet, but a new source file added there would have
been silently untracked and left out of a commit.
Found by git refusing to stage a change to Source/Assembler/firstPass.c.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
AnachronautandClaude Opus 5