Module patterns 

Command classification patterns for identifying compilation commands.

Implements the 5-tier classification system:

• Tier 0: Instant reject (non-Bash, empty)
• Tier 1: Structure analysis (pipes, redirects, background)
• Tier 2: SIMD keyword filter
• Tier 3: Negative pattern check
• Tier 4: Full classification with confidence

Structs

Classification

Result of command classification.

ClassificationDetails

Detailed classification results with per-tier decisions.

ClassificationTier

Detailed result for a single classification tier.

Enums

CompilationKind

Kind of compilation command detected.

TierDecision

Decision outcome for a classification tier.

Statics

COMPILATION_KEYWORDS

Keywords that indicate a potential compilation command. Used for SIMD-accelerated quick filtering (Tier 2).

NEVER_INTERCEPT

Commands that should NEVER be intercepted, even if they contain compilation keywords. These either modify local state or have dependencies on local execution.

Functions

classify_command

Classify a shell command.

classify_command_detailed

Classify a shell command with detailed tier decisions for diagnostics.

compound_local_compilation_segments

Segments of an && chain (all but the last) that look like a compilation command but were not classified as one, and therefore stay local when the chain is rewritten by the hook (issue #50).

declined_compilation_due_to_structure

Detect a command that would be a compilation command if it weren’t for an (unsafe / unhandled) pipe/redirect/background/subshell structure — i.e. one that the classifier declines purely because of its shell structure rather than because the underlying program is not a compiler (issue #24, item 3).

is_cargo_package_verification

Whether Cargo will build and verify a package archive without publishing it.

is_cargo_xwin_build

Recognize the explicit cargo-xwin build entry points, without treating a mention in a Cargo option value as permission to relax the native MSVC gate. The worker must still have the requested Rust target, cargo-xwin and its SDK. Non-build commands (including cache mutation and environment inspection) are deliberately outside this offload surface.

normalize_command

Normalize a command by stripping common wrappers (sudo, time, env, etc.)

split_shell_commands

Split a shell command string on unquoted ;, &&, and || operators.