Fuzzer improvements and CondParen formatting fix#323
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_format_cond_body (Python) and _formatCondBody (JavaScript) referenced node.body for cond-paren nodes, but CondParen uses node.inner. This caused an AttributeError when formatting conditional expressions with parentheses inside command substitutions, e.g., echo $([[ ( -n x ) ]]).
Add a grammar-based generator that produces bash scripts with controlled complexity via 13 layers (literals through functions). Also add layer detection and --filter-layer option to all fuzzers for filtering discrepancies by complexity. Changes: - New generator.py with layered grammar-based generation - Unified CLI with subparsers (char, struct, gen, min aliases) - --minimize and --filter-layer flags for character/structural fuzzers - Shared post_process_discrepancies() in common.py - Enhanced minimizer CLI supporting stdin and @file input - Updated documentation
ldayton
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Summary
--filter-layeroption to filter discrepancies by complexitychar,struct,gen,min)--minimizeflag to character and structural fuzzersCondParennodes inside command substitutionsDetails
Grammar-based generator
New
uv run fuzzer gencommand generates bash scripts with controlled complexity:Layer filtering
All fuzzers now support
--filter-layer Nto show only discrepancies at or below layer N, useful for focusing on simpler constructs first.Bug fix
_format_cond_bodyreferencednode.bodyfor cond-paren nodes, butCondParenusesnode.inner. This caused crashes on inputs likeecho $([[ ( -n x ) ]]).