Protect pony-lint against oversize configuration files#5138
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Rejects
.pony-lint.jsonfiles larger than 64 KB before reading them into memory. With hierarchical config, each directory can have its own config file — this prevents unexpected memory consumption from oversized files. Files over the limit produce alint/config-errordiagnostic.Also filed #5137 for the same pattern in
IgnoreMatcher._load_file.Closes #5133