fix(zsh): preserve options for default completion

[jdx]

Summary

• keep the generated zsh init fallback in a completion-friendly option state after emulate -L zsh
• disable nomatch and enable extendedglob before delegating to _files
• extend the zsh init integration test to cover the non-usage fallback path

Fixes #692.

Validation

• cargo test -p usage-lib test_complete_zsh_init
• cargo test -p usage-cli test_zsh_completion_init_integration --test shell_completions_integration

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Note

Low Risk
Narrow change to generated zsh init completion and its tests; no auth, data, or core runtime behavior.

Overview
The generated zsh completion-init handler (_usage_default_complete) now runs setopt localoptions nonomatch extendedglob immediately after emulate -L zsh, so when a command is not a usage shebang and the handler falls back to _files, file completion still sees nomatch off and extendedglob on instead of whatever emulate left behind.

The zsh init integration test stubs _files to report those options, adds a plain (non-usage) completion case to hit the fallback path, and asserts nomatch=off extendedglob=on. The complete_zsh_init snapshot is updated for the new line in generated output.

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Review profile: CHILL

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Run ID: 140a7efd-0a94-4d87-893f-9fcd67c51706

📥 Commits

Reviewing files that changed from the base of the PR and between d5b9cb8 and 3d9c234.

⛔ Files ignored due to path filters (1)

• lib/src/complete/snapshots/usage__complete__zsh__tests__complete_zsh_init.snap is excluded by !**/*.snap

📒 Files selected for processing (2)

• cli/tests/shell_completions_integration.rs
• lib/src/complete/zsh.rs

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[greptile-apps]

Greptile Summary

This PR fixes zsh default completion by ensuring the generated _usage_default_complete function is in a completion-friendly option state when it delegates to _files for non-usage-shebang commands.

• Inserts setopt localoptions nonomatch extendedglob immediately after emulate -L zsh in the generated shell function, so that glob matching errors are suppressed and extended globs are available when _files runs.
• Extends the integration test with a plain command (no usage shebang) to drive the _files fallback path and assert the correct option values (nomatch=off extendedglob=on).

Confidence Score: 5/5

Safe to merge — a minimal, targeted fix to the generated zsh completion function with no side effects on the usage-shebang path.

The change is a single-line addition to a shell code template. emulate -L zsh already makes all option changes local, so the localoptions part of the new setopt is redundant but harmless; nonomatch and extendedglob are exactly the options _files needs to work correctly. The integration test directly verifies both option values at the point _files is called, and the snapshot captures the generated output. No existing behaviour on the usage-shebang path is touched.

No files require special attention.

Important Files Changed

Filename	Overview
lib/src/complete/zsh.rs	Adds setopt localoptions nonomatch extendedglob after emulate -L zsh in the generated _usage_default_complete shell function to ensure _files receives a compatible option state
lib/src/complete/snapshots/usage__complete__zsh__tests__complete_zsh_init.snap	Snapshot updated to reflect the new setopt localoptions nonomatch extendedglob line; consistent with the code change
cli/tests/shell_completions_integration.rs	Integration test extended with a plain command (non-usage-shebang) to exercise the _files fallback path and assert that nomatch=off and extendedglob=on are in effect when _files is called

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