Doc Sync

Doc sync for the public shell surface

REFERENCE.md is the single source of truth for everything a user can type at a shell after sourcing this repo: aliases, functions, env vars, git subcommands, hooks, prompt options, plugin-exposed behavior, and commands on $PATH. The Configuration Options table in README.md duplicates the user-facing DOT_* and BASHRC_* startup variables. Both can drift silently, so any change to that surface needs a matching doc edit in the same commit.

When to use this skill

Apply this skill when a code change adds, renames, or removes any of:

• A shell alias under dotenv/aliases or a platform-scoped aliases file.
• A shell function exposed for user invocation (not internal __dot_* / internal::* helpers).
• A git subcommand (dotenv/bin/git-* or any other bin/git-*).
• An executable on $PATH under dotenv/bin/ or a platform bin/ directory.
• A user-facing environment variable read by the shell.
• A startup configuration variable (DOT_*, BASHRC_*).
• A hook surface (chpwd, precmd, preexec, or dotfiles_hook_*).
• A prompt option, prompt segment, or plugin-exposed behavior.

Skip this skill when the change is internal: refactoring an implementation, renaming a private helper, moving code between files without changing the user-callable surface, or editing tests.

What lives where

REFERENCE.md sections (one or more may apply per change):

• ## Core shell interface - aliases and user-facing functions.
• ## Built-in plugin interface - plugin-exposed behavior and DOT_PLUGIN_DISABLE_* toggles.
• ## Commands on PATH > ### Utility commands - non-git executables under any bin/ directory.
• ## Commands on PATH > ### Git subcommands - git-* scripts invoked as git <name>. NOTE: ## Git aliases is for git-config aliases like gco / gst, not for git-* scripts.
• ## Hooks and extension points - chpwd / precmd / preexec, per-phase hooks, ~/.bash_local knobs.
• ## Environment variables has multiple subsections; pick by what the variable does:
  • ### Runtime exports - non-startup env vars exported at load.
  • ### Startup configuration variables - non-prompt DOT_* / BASHRC_* knobs read once during init.
  • ### Prompt configuration variables > #### Prompt options - prompt-specific DOT_* knobs (DOT_DISABLE_PS1, DOT_GIT_PROMPT_*, DOT_PS1_*, etc.). A new prompt knob goes here, not under Startup configuration variables.
  • ### Prompt configuration variables > #### Prompt segment helpers, #### Prompt symbol overrides, #### Prompt color overrides - pick the most specific subsection.
• ## Additional tools - vendored CLIs, completions, integrations.

README.md Configuration Options table:

• The table under ## Configuration Options is a single flat alphabetical list of every DOT_* and BASHRC_* user-facing startup variable, regardless of whether REFERENCE.md splits it across ### Startup configuration variables and #### Prompt options. Add the entry exactly once.
• Defaults and one-line descriptions should match the corresponding REFERENCE.md row in shape; README.md writes UNSET in uppercase where REFERENCE.md uses lowercase unset. That casing difference is intentional; do not normalize it.

Workflow

1. Identify the change type and the user-facing surface it touches. If the change is purely internal, stop; this skill does not apply.
2. Locate the matching section(s) in REFERENCE.md. Most surfaces are tabular; keep the existing column layout and alphabetical or logical order.
3. For added entries: insert the row in the right place, link the source path with a relative link where the section convention does so, and write a one-line description in the same voice as neighboring rows.
4. For renames: update both the entry and any cross-references. Search REFERENCE.md for the old name to catch links, examples, and "see also" lines.
5. For removals: drop the row and check that no other entry references it.
6. If the change is a DOT_* or BASHRC_* variable, repeat the same insert/rename/remove edit in the README.md Configuration Options table. Defaults and one-line descriptions should match REFERENCE.md exactly.
7. Stage REFERENCE.md (and README.md when applicable) in the same commit as the code change.

Verification

• grep for the old name across the repo after a rename to catch stale references in docs, tests, and other markdown.
• For startup variables, diff the names between the two tables to confirm they match. A simple check:

diff <(grep -oE '`(DOT|BASHRC)_[A-Z0-9_]+`' README.md | sort -u) \
     <(grep -oE '`(DOT|BASHRC)_[A-Z0-9_]+`' REFERENCE.md | sort -u)

• Run ./dev/lint-shell.sh if shell scripts changed; markdown is checked by lint-staged on commit.

Common pitfalls

• Editing only REFERENCE.md for a new DOT_* knob and forgetting the README.md table.
• Putting a git-* script in ## Git aliases. That section is for git-config aliases (gco, gst, etc.). Scripts named git-<name> belong under ## Commands on PATH > ### Git subcommands.
• Putting a prompt-related DOT_* knob in ### Startup configuration variables. Prompt knobs go in ### Prompt configuration variables > #### Prompt options. Adding to both subsections duplicates the entry; pick the more specific one.
• Renaming a git-* subcommand and missing the link inside the ### Git subcommands table that points at the old file path.
• Adding a one-line description that restates the name. Match the density of neighboring rows; descriptions should add information, not paraphrase the identifier.
• Documenting an __dot_* or internal::* helper. Internal names do not belong in REFERENCE.md.