rootiest
12d83112ea
string split -f does not accept ranges like '2-'; split on the first colon only with -m 1 to correctly separate the grep line number from the heading text without erroring on every heading line.
108 lines
3.8 KiB
Fish
108 lines
3.8 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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# config_help [section]
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#
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# DESCRIPTION
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# Opens the offline fish shell configuration manual in the best available
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# pager. Falls back through ov -> bat -> man -> less -> cat.
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# If a section keyword is provided, the pager opens at the first heading
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# that matches the keyword (case-insensitive).
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#
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# ARGUMENTS
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# section Optional keyword to jump to a matching section heading
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#
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# RETURNS
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# 0 Manual displayed
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# 1 Documentation file not found
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#
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# EXAMPLE
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# config_help
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# config_help keybindings
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# config_help pkg
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# config_help fish-deps
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function config_help --description 'Open the offline fish shell configuration manual'
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set -l doc_file "$__fish_config_dir/docs/fish-config.md"
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set -l man_file "$__fish_config_dir/docs/fish-config.1"
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if not test -f "$doc_file"
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set_color red
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echo "error: documentation not found at $doc_file" >&2
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set_color normal
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return 1
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end
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# ── Resolve section start line ───────────────────────────────
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# Normalize both sides: strip non-alphanumeric chars and lowercase.
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# This lets "keybindings" match "KEY BINDINGS", "fish-deps" match
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# "fish-deps", etc. without requiring exact punctuation or case.
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set -l start_line 1
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if test -n "$argv[1]"
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set -l norm_kw (string lower -- $argv[1] | string replace -ra '[^a-z0-9]' '')
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set -l found ""
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for entry in (grep -n "^#" "$doc_file")
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set -l parts (string split -m 1 ':' -- $entry)
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set -l lnum $parts[1]
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set -l text $parts[2]
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set -l norm_text (string lower -- $text | string replace -ra '[^a-z0-9]' '')
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if string match -q "*$norm_kw*" $norm_text
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set found $lnum
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break
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end
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end
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if test -n "$found"
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set start_line $found
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else
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set_color yellow
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echo "note: no section matching '$argv[1]' — opening at top" >&2
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set_color normal
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end
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end
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# ── Viewer fallback chain ────────────────────────────────────
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# bat colors the output; ov matches headers via an ANSI-aware regex.
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# bat emits: ESC[<color>m# ... so delimiter ^(\x1b\[[0-9;]*m)+# matches
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# any 8/24-bit color sequence before a '#', theme-agnostic.
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# Section nav: Space (next), ^ (previous), Alt+u (section list sidebar).
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# psub creates a seekable temp file so --jump-target works on bat output.
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if type -q ov; and type -q bat
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set -l ov_args \
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--section-delimiter "^(\x1b\[[0-9;]*m)+#" \
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--section-header
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if test $start_line -gt 1
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set -a ov_args --jump-target $start_line
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end
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ov $ov_args (bat --color=always --style=plain --language=markdown "$doc_file" | psub)
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# ov alone: section navigation on raw Markdown; no code highlighting.
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else if type -q ov
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set -l ov_args \
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--section-delimiter "^#" \
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--section-header
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if test $start_line -gt 1
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set -a ov_args --jump-target $start_line
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end
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ov $ov_args "$doc_file"
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# bat alone: syntax highlighting with built-in paging; no line jump.
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else if type -q bat
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if test $start_line -gt 1
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set_color brblack
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echo "note: bat pager — use / to search for your section" >&2
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set_color normal
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end
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bat --language=markdown --paging=always "$doc_file"
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# Pre-compiled man page (generated by CI after merge).
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else if test -f "$man_file"
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man -l "$man_file"
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else if type -q less
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less +"$start_line" "$doc_file"
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else
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cat "$doc_file"
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end
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end
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