fix(docs): render optional subcommands and mount synopses - #1393
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📝 WalkthroughWalkthroughChangesThe change adds a display-only Usage rendering and mount synopsis
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to Synopsis text improves generated usage documentation, but older consumers may reject newly serialized fields and resolved mounts may retain stale usage text. These compatibility and documentation-correctness issues should be addressed before merge. Sequence Diagram(s)sequenceDiagram
participant KDL
participant SpecMount
participant usage_with_subcommands
participant HelpRenderer
KDL->>SpecMount: Parse mount synopsis
SpecMount->>usage_with_subcommands: Provide synopsis and subcommand settings
usage_with_subcommands->>HelpRenderer: Return generated usage
HelpRenderer-->>SpecMount: Render CLI or Markdown help
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Inline comments:
In `@lib/src/spec/cmd.rs`:
- Around line 884-889: Restamp command usage after mount resolution so cached
SpecCommand::usage reflects the resolved command tree rather than unresolved
mount.synopsis values. Update the resolution flow to call Spec::restamp() after
mounts are resolved, and add a regression test covering a resolved mount with a
synopsis.
In `@lib/src/spec/mount.rs`:
- Around line 14-16: Gate SpecMount.synopsis serialization by the target usage
release in both the KdlNode conversion and serde-derived representation,
suppressing it for consumers that do not support the mount key while preserving
it for supported releases; keep SpecMount::parse compatibility aligned with this
capability check.
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docs/spec/reference/cmd.mdlib/src/docs/cli/mod.rslib/src/docs/markdown/cmd.rslib/src/docs/markdown/spec.rslib/src/spec/cmd.rslib/src/spec/mod.rslib/src/spec/mount.rslib/tests/parse.rs
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usage 6.8.0 Created-by: HarmonybrewBot Commit-by: HarmonybrewBot Merged-by: HarmonybrewBot Description: Created by `brew bump` --- Created with `brew bump-formula-pr`.<details> <summary>release notes</summary> <pre>This release gives the `usage` CLI native shell completions (including PowerShell), adds a configurable link extension for Markdown docs, and fixes a batch of synopsis and Markdown rendering issues across docs and man pages. ## Added - **(cli)** Native shell completions ([#1388](jdx/usage#1388), @jdx). `usage --completions <shell>` now emits native scripts that call the installed binary's compiled completion handler instead of caching a spec and relying on the bash-completion helpers. Bash, Zsh, Fish, and a new PowerShell script are all supported, and scripts use `command usage` so a shell function or alias can no longer shadow the executable. All four scripts are published alongside the CLI spec as signed Packslip resources. General `usage generate completion` behavior is unchanged. - **(docs)** Configurable Markdown link extension ([#1394](jdx/usage#1394), @jdx). Generated Markdown links previously always ended in `.md`, forcing consumers who serve HTML or extensionless pages to rewrite links after generation. A new `--link-extension` flag (and `MarkdownRenderer::with_link_extension`, default `.md`) controls the suffix on command and configuration links without changing output filenames: ``` usage generate markdown --file mycli.usage.kdl --link-extension .html ``` Custom templates now also receive `link_extension` and `config_link` in their context. ## Fixed - **(docs)** Render optional subcommands and mount synopses ([#1393](jdx/usage#1393), @jdx). Generated synopses showed `<SUBCOMMAND>` even when a command could run without one; the shared usage string now honors `subcommand_required` (using `[SUBCOMMAND]` when optional) and custom placeholder names, keeping terminal help, Markdown, man pages, JSON, and SDK docs consistent. Unresolved mounts can also declare a display-only `synopsis` (for example `mount run="mycli tasks --usage" synopsis="[TASK] [ARGS]…"`) to document dynamic arguments without running discovery; parsing and completion are unchanged. - **(docs)** Preserve Markdown code blocks and headings ([#1392](jdx/usage#1392), @jdx). Indented help text was converted to code fences by stripping four spaces from every matching line, which could corrupt nested lists and existing fenced examples. Markdown code-block boundaries are now parsed so only real indented code blocks are converted, fences are chosen longer than any embedded backtick runs, and HTML escaping recognizes longer fences. Hidden subcommands are now filtered out before the Subcommands heading, and the duplicate synopsis line was removed from the multipage index. - **(manpage)** Render mount synopses and custom command names ([#1395](jdx/usage#1395), @jdx). Completes the man-page side of the synopsis fixes above. The man-page renderer now carries declarative mount synopses and custom subcommand names into its own synopsis (instead of hard-coded `<COMMAND>`/`[COMMAND]`), includes mount fragments in root and subcommand synopses without running discovery, and emits a detail section for a command whose only documentation is a mount synopsis. ## Changed - **(docs)** Refreshed guides, navigation, and landing page ([#1391](jdx/usage#1391), @jdx). A new getting-started guide walks from install through KDL, lint/explain, docs/man, completions, and diff. Navigation is reorganized into guides, framework docs, and references with route-specific sidebars; the landing page is simplified with clearer starting points for Rust apps, existing CLIs, and scripts. Installation commands, Rust and SDK examples, and completion setup were corrected, Go is now labeled a development preview, and broken links across all 171 Markdown files were fixed. **Full Changelog**: jdx/usage@v6.7.1...v6.8.0 ## 💚 Sponsor usage usage is built and maintained by [@jdx](https://github.com/jdx), an open source developer at [**entire.io**](https://entire.io/), the title sponsor of his open source work. If `usage` powers CLI specs, docs, or completions for a tool you maintain or use, please consider becoming an [individual or company sponsor](https://jdx.dev/sponsors.html). Your support funds ongoing development and helps keep usage fast, free, and independent. </pre> <p>View the full release notes at <a href="https://github.com/jdx/usage/releases/tag/v6.8.0">https://github.com/jdx/usage/releases/tag/v6.8.0</a>.</p> </details> <hr> See merge request: Harmonybrew/homebrew-core!18569
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Generated synopses displayed
<SUBCOMMAND>even when the command could run without a subcommand. Honorsubcommand_requiredand custom placeholder names in the shared generated usage string, keeping terminal help, Markdown, man pages, JSON, and SDK documentation consistent.Add optional
synopsismetadata to unresolved mounts, allowingmount run="mycli tasks --usage" synopsis="[TASK] [ARGS]…"to document dynamic arguments without invoking discovery. This is display metadata only; parsing and completion remain unchanged. Consumers must require a usage release supporting the new property before emitting it.Validation: all usage-lib unit and integration tests, KDL/JSON round trips and no-discovery rendering tests, updated presentation snapshots, and Clippy with all features/targets and warnings denied.
Also verified the compiled argv/reference fleet parity and all eight generated-help parity tests, the 83 facade tests, and repository render/shadow generators. The broader local shell integration run was not clean on macOS (including the system Bash lacking
complete -D); no checks or assertions were disabled.AI-assisted with Codex.
Note
Low Risk
Changes are limited to help and documentation strings plus display-only mount metadata; argv parsing and completion behavior are explicitly unchanged.
Overview
Generated usage synopses always showed
<SUBCOMMAND>even when a command does not require a child. Help, Markdown, man pages, JSON, and SDK docs now use[SUBCOMMAND](or[ACTION]etc.) whensubcommand_requiredis false, and keep angle brackets when it is true. The same rule is applied in usage-lib (SpecCommand::usage), usage-argv help rendering, and usage-goUsageLine.Unresolved mounts can declare an optional
synopsis(e.g.synopsis="[TASK] [ARGS]…") so documentation shows dynamic-looking placeholders without running discovery; parsing and completion are unchanged. After mounts resolve, usage is restamped so the display-only synopsis is replaced by the real subcommand tree.Corpus fixtures, conformance tests, mise parity checks, and generated mise docs snapshots were updated to expect
[SUBCOMMAND]where subcommands are optional.Reviewed by Cursor Bugbot for commit a73b97b. Bugbot is set up for automated code reviews on this repo. Configure here.