dotfiles/modify_dot_gitconfig.tmpl at main · daviddwlee84/dotfiles · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
#!/usr/bin/env bash
# modify_ script: render chezmoi-managed baseline gitconfig, then preserve any
# [credential "<URL>"] sections from the existing ~/.gitconfig (typically
# injected by `gh auth setup-git` or `gh auth login --git-protocol https`).
#
# Why modify_: gh CLI rewrites ~/.gitconfig out-of-band on every `gh auth
# login` / `setup-git` invocation, hard-coding the absolute path to the local
# `gh` binary (e.g. /opt/homebrew/bin/gh on Apple Silicon, /usr/local/bin/gh
# on Intel mac, /home/linuxbrew/.linuxbrew/bin/gh on Linux). A plain template
# would clobber that on every `chezmoi apply`, causing a ping-pong fight with
# whatever `gh` wrote last.
#
# Per-machine overrides (proxy, safe.directory, etc.) still belong in
# ~/.gitconfig.local — that's loaded via [include] from the baseline below.
# This script ONLY preserves [credential "<URL>"] blocks; everything else in
# the live file gets replaced by the chezmoi baseline.
#
# DO NOT hand-edit ~/.gitconfig directly — non-credential edits will be
# silently overwritten on the next `chezmoi apply`. Use ~/.gitconfig.local.

set -euo pipefail

# 1. Slurp current target contents from stdin (chezmoi modify_ contract).
existing="$(cat)"

# 2. Emit the chezmoi-managed baseline.
cat <<'CHEZMOI_BASELINE_EOF'
[user]
	email = {{ .email }}
	name = {{ .name }}
[http]
	postBuffer = 524288000
[filter "lfs"]
	clean = git-lfs clean -- %f
	smudge = git-lfs smudge -- %f
	process = git-lfs filter-process
	required = true
[init]
    defaultBranch = main
[core]
    hooksPath = ~/.config/git/hooks
[pull]
    rebase = true
[rebase]
    autoStash = true
{{- if lookPath "delta" }}
    pager = delta
[interactive]
    diffFilter = delta --color-only
[delta]
    navigate = true
    side-by-side = true
{{- end }}
# Per-machine overrides (safe, credential, http.proxy, etc.) live in
# ~/.gitconfig.local so they don't conflict with chezmoi-managed updates
# to this template. The file is git-ignored by chezmoi (.chezmoiignore)
# and silently skipped by git if it doesn't exist — see
# https://git-scm.com/docs/git-config#_includes. Same pattern as
# ~/.zshrc.adhoc for shell customisations.
[include]
    path = ~/.gitconfig.local
CHEZMOI_BASELINE_EOF

# 3. Extract and re-emit any [credential "<scope>"] sections from the live
#    file. awk captures the section header AND its body (indented or
#    `key = value` lines) until the next [section] header or EOF. The
#    gh-injected absolute path to the gh binary is preserved verbatim — we
#    intentionally do NOT normalize it, so each machine keeps the path that
#    its local `gh auth setup-git` wrote.
if [ -n "$existing" ]; then
  # awk extracts each `[credential "<url>"]` section + its body. We strip
  # leading/trailing blank lines so re-running this script on its own output
  # is idempotent (no blank-line accretion across successive `chezmoi apply`
  # passes).
  preserved="$(printf '%s\n' "$existing" | awk '
    /^\[credential "/ { keep=1; print; next }
    /^\[/             { keep=0 }
    keep              { print }
  ' | awk 'NF { found=1 } found { print }' | awk '
    { lines[NR]=$0 }
    END { for (i=NR; i>0 && lines[i]==""; i--); for (j=1; j<=i; j++) print lines[j] }
  ')"
  if [ -n "$preserved" ]; then
    printf '\n%s\n' "$preserved"
  fi
fi