Add git config set - #41
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Aliases, sane defaults (autoprune, autoSetupRemote, rerere, diff3 conflict markers), a global gitignore, and a per-machine identity file. Also installs Delta and wires it in as the diff/log pager, writing to a separate untracked file rather than `git config --global` so it can never clobber the tracked gitconfig symlink.
file-style and line-numbers-{left,right}-style default to plain ANSI
"blue", which reads poorly on a dark background; every other default
style resolves to a specific RGB/256-color value. Line numbers are
off by default.
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Summary
gitconfig set (config/sets/git/), universal likebasic(noosfile).st/co/br/ci/last/unstage/amend), sane defaults (autoprune on fetch,autoSetupRemoteon push, rerere,diff3conflict markers), a global gitignore, and a per-machine identity file (~/.config/git/identity, copied once so different machines can carry differentuser.name/user.email).A bug caught while testing
Writing Delta's config with
git config --globalis wrong here: with no~/.gitconfigon the machine yet,--globalresolves to~/.config/git/config— which is a symlink back into this repo. Running that against a real deploy overwrote the trackedgitconfigfile directly (confirmed by actually doing it once against this repo before catching it). Fixed by writing to a separate, untracked~/.config/git/localfile viagit config --file, included from the trackedgitconfig— a missing include target is a silent no-op, so this degrades cleanly when Delta isn't available.Test plan
shellcheckonconfig/sets/git/apply.shpasses cleaninstall-scripts/02-move-files.shend-to-end against an isolated$HOMEwith only thegitset enabled: confirmedgitconfig/gitignoreland as symlinks,identityis copied (and untouched by re-runs after hand-editing it), Delta installs and its config lands in the untrackedlocalfile, and the trackedgitconfigfile is byte-for-byte unchanged afterwardgit var GIT_AUTHOR_IDENT,git config --getinside an actual repo) correctly picks up identity, aliases, and the Delta pager through the[include]chain