rootiest
9c52e64373
The non-git fallback used a substring match, so a negation line such as !AGENTS/foo counted as the pattern AGENTS/ already being ignored and the real rule was never appended.
84 lines
3.3 KiB
Fish
84 lines
3.3 KiB
Fish
# Copyright (C) 2026 Rootiest
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# SPDX-License-Identifier: AGPL-3.0-or-later
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# SYNOPSIS
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# _agents_init_ensure_gitignore <root> <label> <pattern>...
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#
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# DESCRIPTION
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# Appends any patterns not already covered by the project's .gitignore.
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# Uses git check-ignore for accurate rule matching (catches wildcards
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# and parent-dir globs). Falls back to a whole-line string search when the
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# root is not a git repository. Leading / is stripped from each pattern
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# before the path-based check so root-anchored patterns (e.g. /AGENTS.md)
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# are matched correctly.
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#
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# Missing patterns are written as a single labeled block:
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#
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# # ──────────────── Added by agents-init ──────────────────
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# # <label>
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# <pattern>
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# # ────────────────────────────────────────────────────────
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#
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# ARGUMENTS
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# root Absolute path to the project root containing .gitignore
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# label Short description used in the block comment header
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# pattern One or more gitignore patterns to ensure are present
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#
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# EXIT STATUS
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# 0 All patterns already ignored or successfully appended
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# 1 Could not write to .gitignore
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#
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# EXAMPLE
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# _agents_init_ensure_gitignore /home/user/myproject "agents-init" "AGENTS/" "/AGENTS.md"
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function _agents_init_ensure_gitignore
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__fish_palette
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if test (count $argv) -lt 3
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echo (set_color red)"_agents_init_ensure_gitignore: requires <root> <label> <pattern>..."(set_color normal) >&2
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return 1
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end
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set -l root $argv[1]
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set -l label $argv[2]
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set -l patterns $argv[3..]
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set -l gitignore "$root/.gitignore"
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set -l in_git 0
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git -C "$root" rev-parse --git-dir >/dev/null 2>&1
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and set in_git 1
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# Collect patterns not already covered
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set -l missing
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for pattern in $patterns
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# Strip leading / so git check-ignore receives a repo-relative path,
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# not an absolute filesystem path (which it cannot match against rules).
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set -l check_path (string replace -r '^/' '' "$pattern")
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set -l already 0
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if test $in_git -eq 1
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git -C "$root" check-ignore -q --no-index "$check_path" 2>/dev/null
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and set already 1
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else if test -f "$gitignore"
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# Whole-line match: a substring match treats a negation line
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# such as "!AGENTS/foo" as covering the pattern "AGENTS/".
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grep -qxF "$pattern" "$gitignore"
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and set already 1
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end
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if test $already -eq 0
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set -a missing "$pattern"
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end
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end
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test (count $missing) -eq 0; and return 0
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# Write missing patterns as a labeled block
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set -l header "# ──────────────── Added by agents-init ──────────────────"
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set -l footer "# ────────────────────────────────────────────────────────"
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printf '\n%s\n# %s\n' "$header" "$label" >>"$gitignore"
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for p in $missing
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printf '%s\n' "$p" >>"$gitignore"
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end
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printf '%s\n' "$footer" >>"$gitignore"
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echo "$c_ok→ Added "(count $missing)" pattern(s) to .gitignore$c_reset"
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end
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