## Summary - Adds support for `--file -` to read specs from stdin on all generate subcommands, lint, and complete-word - Enables piping specs from other tools (e.g., `jbang usage | usage generate markdown --file -`) - Updates `--file` help text to document stdin support - Not supported for exec/shell subcommands which pass stdin through to the child process Closes #546 ## Test plan - [x] `echo 'name "test" flag "-v --verbose" help="verbose"' | usage generate json --file -` produces valid JSON output - [ ] Verify `--file /path/to/file` still works as before - [ ] Verify `usage generate markdown --file - --out-file out.md` works with piped input 🤖 Generated with [Claude Code](https://claude.com/claude-code)  --- > [!NOTE] > **Low Risk** > Low-risk CLI enhancement that only affects how usage specs are read when `--file` is set to `-`; primary risk is unintended behavior changes for edge-case file paths or stdin handling. > > **Overview** > Adds support for piping a usage spec via stdin by treating `--file -` as “read spec from stdin” across `complete-word`, `generate completion/manpage/markdown`, and `lint` (via new shared helpers in `cli/src/cli/generate/mod.rs`). > > Updates generated metadata/docs (`usage.usage.kdl`, manpage, reference JSON/markdown, Fig spec) to document the stdin behavior, and adjusts generated output labeling to use `stdin` instead of `-` where a source filename is surfaced (e.g., completion `source_file` and Fig `@generated` header). > > <sup>Written by [Cursor Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit 98d3919. This will update automatically on new commits. Configure [here](https://cursor.com/dashboard?tab=bugbot).</sup>  --------- Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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support - for reading script from standard input #546

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