ddidderr
4eb03f637d
Adds tools/difftest: a Zig driver built against a copy of Ghostty 1.3.1's own src/terminal (Zig 0.15.2, set up under target/ by tools/difftest/setup.sh) and a Rust twin on ghostty-terminal, both printing a canonical dump of every scrollback/active row (cells, graphemes, styles, hyperlinks, row flags), cursor, modes, regions, tabstops and colors. A seeded generator produces escape-heavy streams (UTF-8/wide/combining/emoji, C0, CSI with edge params, SGR, modes, ESC, OSC, DCS, margins, insert/delete); `just difftest` runs it with Zig assertions on (ReleaseSafe vs debug Rust) and off (ReleaseFast vs production Rust), with minimizers and a triage script. Divergences found and fixed in Rust (each with a regression test): - ill-formed UTF-8 decoding follows the SIMD path a default Ghostty build uses (not Zig's scalar fallback) - PageList::erase_rows keeps Zig's row-flag behavior on regrow - grapheme move on wrap with left/right margins uses the original cell Upstream bugs found and deliberately NOT replicated (per the project rule): a stale cell pointer after page growth in Terminal.zig:482/539 that drops a grapheme, plus several Zig assertion failures/segfaults; documented with minimized repros in docs/rewrite/notes/difftest-DF.md. Final run: 390k cases across many geometries, 0 divergences (Zig-abort cases, ~0.1-0.5%, are not compared). Test Plan: - just difftest 20000 "1 2 3" - cargo test -p ghostty-terminal (regression tests)
127 lines
3.5 KiB
TOML
127 lines
3.5 KiB
TOML
[package]
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name = "ghostty-rs"
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version = "0.1.0"
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edition = "2024"
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description = "A Rust rewrite of the Ghostty terminal emulator"
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[[bin]]
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name = "ghostty"
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path = "src/main.rs"
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[features]
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# Mirrors upstream's `-Dsentry` build option (off by default on Linux):
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# enables the local crash-report handler (`ghostty-crash`).
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sentry = ["ghostty-crash/sentry"]
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[dependencies]
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ghostty-core.workspace = true
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ghostty-config.workspace = true
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ghostty-apprt-gtk.workspace = true
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ghostty-apprt.workspace = true
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ghostty-cli.workspace = true
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ghostty-crash.workspace = true
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ghostty-os.workspace = true
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log = "0.4"
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[dev-dependencies]
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rustix = { version = "1", features = ["process"] }
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serde_json = "1"
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tempfile = "3"
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[lints]
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workspace = true
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[workspace]
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resolver = "3"
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members = [".", "crates/*", "tools/difftest"]
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# The upstream Ghostty version this rewrite tracks (Zig: `build.zig.zon`
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# `.version`); consumed by `crates/ghostty-cli/build.rs`.
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[workspace.metadata.ghostty]
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app-version = "1.3.1"
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[workspace.package]
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version = "0.1.0"
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edition = "2024"
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license = "MIT"
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[workspace.dependencies]
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ghostty-vt = { path = "crates/ghostty-vt" }
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ghostty-unicode = { path = "crates/ghostty-unicode" }
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ghostty-terminal = { path = "crates/ghostty-terminal" }
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ghostty-input = { path = "crates/ghostty-input" }
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ghostty-helpgen = { path = "crates/ghostty-helpgen" }
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ghostty-config = { path = "crates/ghostty-config" }
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ghostty-font = { path = "crates/ghostty-font" }
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ghostty-renderer = { path = "crates/ghostty-renderer" }
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ghostty-termio = { path = "crates/ghostty-termio" }
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ghostty-os = { path = "crates/ghostty-os" }
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ghostty-zigfmt = { path = "crates/ghostty-zigfmt" }
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ghostty-onig = { path = "crates/ghostty-onig" }
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ghostty-datastruct = { path = "crates/ghostty-datastruct" }
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ghostty-core = { path = "crates/ghostty-core" }
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ghostty-apprt-gtk = { path = "crates/ghostty-apprt-gtk" }
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ghostty-apprt = { path = "crates/ghostty-apprt" }
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ghostty-cli = { path = "crates/ghostty-cli" }
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ghostty-build-info = { path = "crates/ghostty-build-info" }
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ghostty-crash = { path = "crates/ghostty-crash" }
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ghostty-bench = { path = "crates/ghostty-bench" }
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ghostty-inspector = { path = "crates/ghostty-inspector" }
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ghostty-vt-capi = { path = "crates/ghostty-vt-capi" }
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ghostty-wasm = { path = "crates/ghostty-wasm" }
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ghostty-lib = { path = "crates/ghostty-lib" }
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[workspace.lints.rust]
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unsafe_code = "forbid"
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[workspace.lints.clippy]
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pedantic = { level = "warn", priority = -1 }
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todo = "warn"
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unwrap_used = "warn"
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# Porting a low-level terminal emulator involves a lot of intentional
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# numeric casts and long state-machine functions; these pedantic lints are
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# noise for this codebase.
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cast_possible_truncation = "allow"
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cast_possible_wrap = "allow"
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cast_sign_loss = "allow"
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cast_precision_loss = "allow"
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cast_lossless = "allow"
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module_name_repetitions = "allow"
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too_many_lines = "allow"
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missing_errors_doc = "allow"
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missing_panics_doc = "allow"
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similar_names = "allow"
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struct_excessive_bools = "allow"
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fn_params_excessive_bools = "allow"
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match_same_arms = "allow"
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unreadable_literal = "allow"
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many_single_char_names = "allow"
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doc_markdown = "allow"
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must_use_candidate = "allow"
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return_self_not_must_use = "allow"
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used_underscore_binding = "allow"
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large_stack_arrays = "allow"
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inline_always = "allow"
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[profile.release]
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debug = true
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strip = false
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debug-assertions = true
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overflow-checks = true
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lto = false
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panic = "unwind"
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incremental = true
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[profile.production]
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inherits = "release"
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debug = false
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strip = true
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debug-assertions = false
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overflow-checks = false
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lto = true
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incremental = false
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codegen-units = 1
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[build-dependencies]
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embed-resource = "3.0.12"
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