From 9b7a7e9c9ca48d39bda7cfdd8221219caa1cffec Mon Sep 17 00:00:00 2001
From: Asherah Connor <ashe@kivikakk.ee>
Date: Thu, 9 May 2024 18:22:30 +0300
Subject: [PATCH 1/5] workflows: check MSRV in CI.

---
 .github/workflows/rust.yml | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 12365252..0126a929 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -2,6 +2,9 @@ name: Rust
 
 on: [push, pull_request]
 
+env:
+  MSRV: 1.62.1
+
 jobs:
   build_test:
     runs-on: ubuntu-latest
@@ -11,6 +14,7 @@ jobs:
           - nightly
           - beta
           - stable
+          - $MSRV
     steps:
     - uses: actions/checkout@v4
       with:
@@ -28,6 +32,7 @@ jobs:
           - nightly
           - beta
           - stable
+          - $MSRV
     steps:
     - uses: actions/checkout@v4
       with:
@@ -43,7 +48,7 @@ jobs:
       with:
         submodules: true
     - name: Obtain Rust
-      run: rustup override set stable
+      run: rustup override set $MSRV
     - name: Setup for wasm
       run: rustup target add wasm32-unknown-unknown
     - name: Build
@@ -58,6 +63,7 @@ jobs:
           - nightly
           - beta
           - stable
+          - $MSRV
     steps:
     - uses: actions/checkout@v4
       with:
@@ -73,7 +79,7 @@ jobs:
       with:
         submodules: true
     - name: Obtain Rust
-      run: rustup override set stable
+      run: rustup override set $MSRV
     - name: Build and test with no features
       run: cargo +stable build --locked --release --all-features
   clippy_format:
@@ -81,7 +87,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - stable
+          - $MSRV
     steps:
     - uses: actions/checkout@v4
       with:

From 24dc120073c6bbbba94425d20e3cc22526d92e36 Mon Sep 17 00:00:00 2001
From: Asherah Connor <ashe@kivikakk.ee>
Date: Thu, 9 May 2024 21:54:59 +0300
Subject: [PATCH 2/5] get bin/lib/test going on 1.62.1 again.

---
 .github/workflows/rust.yml |  36 ++-
 Cargo.lock                 | 584 ++++++++++++-------------------------
 Cargo.toml                 |  12 +-
 examples/update-readme.rs  |   9 +-
 script/cibuild             |  86 +++---
 src/main.rs                |   8 +-
 src/tests.rs               |   1 -
 src/tests/propfuzz.rs      |  47 ---
 8 files changed, 261 insertions(+), 522 deletions(-)
 delete mode 100644 src/tests/propfuzz.rs

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 0126a929..eaa64c6d 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -6,7 +6,7 @@ env:
   MSRV: 1.62.1
 
 jobs:
-  build_test:
+  build_lib_test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -21,11 +21,16 @@ jobs:
         submodules: true
     - name: Obtain Rust
       run: rustup override set ${{ matrix.rust }}
-    - name: Build and test
-      run: env SPEC=false script/cibuild
-  build_spec:
+    - name: Build library
+      run: cargo build --verbose --lib
+    - name: Build examples
+      run: cargo build --verbose --lib --examples
+    - name: Run unit tests
+      run: cargo test --verbose
+    - name: "Run README sample (TODO: update me)"
+      run: cargo run --example sample
+  build_bin_spec:
     runs-on: ubuntu-latest
-    needs: build_test
     strategy:
       matrix:
         rust:
@@ -39,16 +44,25 @@ jobs:
         submodules: true
     - name: Obtain Rust
       run: rustup override set ${{ matrix.rust }}
-    - name: Build and run spec tests
-      run: env SPEC=true script/cibuild
+    - name: Build binary
+      run: cargo build --verbose --bin --release
+    - name: Run spec tests
+      run: script/cibuild
   build_wasm:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - nightly
+          - beta
+          - stable
+          - $MSRV
     steps:
     - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Obtain Rust
-      run: rustup override set $MSRV
+      run: rustup override set ${{ matrix.rust }}
     - name: Setup for wasm
       run: rustup target add wasm32-unknown-unknown
     - name: Build
@@ -84,16 +98,12 @@ jobs:
       run: cargo +stable build --locked --release --all-features
   clippy_format:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        rust:
-          - $MSRV
     steps:
     - uses: actions/checkout@v4
       with:
         submodules: true
     - name: Obtain Rust
-      run: rustup override set ${{ matrix.rust }}
+      run: rustup override set $MSRV
     - name: Check clippy
       run: rustup component add clippy && cargo clippy
     - name: Check formatting
diff --git a/Cargo.lock b/Cargo.lock
index a4c6cf91..ff26f2db 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10,62 +10,13 @@ checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.3"
+version = "0.7.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+checksum = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
 dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "anstream"
-version = "0.6.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "418c75fa768af9c03be99d17643f93f79bbba589895012a80e3452a19ddda15b"
-dependencies = [
- "anstyle",
- "anstyle-parse",
- "anstyle-query",
- "anstyle-wincon",
- "colorchoice",
- "is_terminal_polyfill",
- "utf8parse",
-]
-
-[[package]]
-name = "anstyle"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "038dfcf04a5feb68e9c60b21c9625a54c2c0616e79b72b0fd87075a056ae1d1b"
-
-[[package]]
-name = "anstyle-parse"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c03a11a9034d92058ceb6ee011ce58af4a9bf61491aa7e1e59ecd24bd40d22d4"
-dependencies = [
- "utf8parse",
-]
-
-[[package]]
-name = "anstyle-query"
-version = "1.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a64c907d4e79225ac72e2a354c9ce84d50ebb4586dee56c82b3ee73004f537f5"
-dependencies = [
- "windows-sys 0.52.0",
-]
-
-[[package]]
-name = "anstyle-wincon"
-version = "3.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61a38449feb7068f52bb06c12759005cf459ee52bb4adc1d5a7c4322d716fb19"
-dependencies = [
- "anstyle",
- "windows-sys 0.52.0",
-]
-
 [[package]]
 name = "arbitrary"
 version = "1.3.2"
@@ -117,24 +68,6 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
-[[package]]
-name = "bitflags"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
-
-[[package]]
-name = "bumpalo"
-version = "3.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
-
-[[package]]
-name = "byteorder"
-version = "1.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
-
 [[package]]
 name = "cc"
 version = "1.0.78"
@@ -149,50 +82,41 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "4.5.4"
+version = "4.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bc066a67923782aa8515dbaea16946c5bcc5addbd668bb80af688e53e548a0"
+checksum = "a7db700bc935f9e43e88d00b0850dae18a63773cfbec6d8e070fccf7fef89a39"
 dependencies = [
- "clap_builder",
+ "bitflags",
  "clap_derive",
-]
-
-[[package]]
-name = "clap_builder"
-version = "4.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae129e2e766ae0ec03484e609954119f123cc1fe650337e155d03b022f24f7b4"
-dependencies = [
- "anstream",
- "anstyle",
  "clap_lex",
- "strsim 0.11.1",
+ "is-terminal",
+ "once_cell",
+ "strsim",
+ "termcolor",
  "terminal_size",
 ]
 
 [[package]]
 name = "clap_derive"
-version = "4.5.4"
+version = "4.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "528131438037fd55894f62d6e9f068b8f45ac57ffa77517819645d10aed04f64"
+checksum = "0177313f9f02afc995627906bbd8967e2be069f5261954222dac78290c2b9014"
 dependencies = [
  "heck",
+ "proc-macro-error",
  "proc-macro2",
  "quote",
- "syn 2.0.60",
+ "syn 1.0.107",
 ]
 
 [[package]]
 name = "clap_lex"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98cc8fbded0c607b7ba9dd60cd98df59af97e84d24e49c8557331cfc26d301ce"
-
-[[package]]
-name = "colorchoice"
-version = "1.0.1"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b6a852b24ab71dffc585bcb46eaf7959d175cb865a7152e35b348d1b2960422"
+checksum = "0d4198f73e42b4936b35b5bb248d81d2b595ecb170da0bac7655c54eedfa8da8"
+dependencies = [
+ "os_str_bytes",
+]
 
 [[package]]
 name = "comrak"
@@ -203,16 +127,14 @@ dependencies = [
  "derive_builder",
  "emojis",
  "entities",
- "in-place",
  "memchr",
  "ntest",
  "once_cell",
- "propfuzz",
  "regex",
  "shell-words",
  "slug",
  "syntect",
- "toml 0.8.12",
+ "toml 0.7.3",
  "typed-arena",
  "unicode_categories",
  "xdg",
@@ -247,7 +169,7 @@ dependencies = [
  "ident_case",
  "proc-macro2",
  "quote",
- "strsim 0.10.0",
+ "strsim",
  "syn 2.0.60",
 ]
 
@@ -304,6 +226,15 @@ dependencies = [
  "syn 2.0.60",
 ]
 
+[[package]]
+name = "deunicode"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71dbf1bf89c23e9cd1baf5e654f622872655f195b36588dc9dc38f7eda30758c"
+dependencies = [
+ "deunicode 1.4.4",
+]
+
 [[package]]
 name = "deunicode"
 version = "1.4.4"
@@ -325,12 +256,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5320ae4c3782150d900b79807611a59a99fc9a1d61d686faafc24b93fc8d7ca"
 
-[[package]]
-name = "equivalent"
-version = "1.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
-
 [[package]]
 name = "errno"
 version = "0.3.8"
@@ -351,12 +276,6 @@ dependencies = [
  "regex",
 ]
 
-[[package]]
-name = "fastrand"
-version = "2.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "658bd65b1cf4c852a3cc96f18a8ce7b5640f6b703f905c7d74532294c2a63984"
-
 [[package]]
 name = "flate2"
 version = "1.0.25"
@@ -373,17 +292,6 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
-[[package]]
-name = "getrandom"
-version = "0.1.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -391,16 +299,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
 [[package]]
-name = "hashbrown"
-version = "0.14.3"
+name = "heck"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+checksum = "95505c38b4572b2d910cecb0281560f54b440a19336cbbcb27bf6ce6adc6f5a8"
 
 [[package]]
-name = "heck"
-version = "0.5.0"
+name = "hermit-abi"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+checksum = "d231dfb89cfffdbc30e7fc41579ed6066ad03abda9e567ccafae602b97ec5024"
 
 [[package]]
 name = "ident_case"
@@ -408,15 +316,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
-[[package]]
-name = "in-place"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cdb69f3adfd5f493210cece799f4620417bf9965bc1536c22ae0e29ba27a8c0"
-dependencies = [
- "tempfile",
-]
-
 [[package]]
 name = "indexmap"
 version = "1.9.2"
@@ -424,24 +323,31 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1885e79c1fc4b10f0e172c475f458b7f7b93061064d98c3293e98c5ba0c8b399"
 dependencies = [
  "autocfg",
- "hashbrown 0.12.3",
+ "hashbrown",
 ]
 
 [[package]]
-name = "indexmap"
-version = "2.2.6"
+name = "io-lifetimes"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
+checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
 dependencies = [
- "equivalent",
- "hashbrown 0.14.3",
+ "hermit-abi",
+ "libc",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
-name = "is_terminal_polyfill"
-version = "1.70.0"
+name = "is-terminal"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8478577c03552c21db0e2724ffb8986a5ce7af88107e6be5d2ee6e158c12800"
+checksum = "8687c819457e979cc940d09cb16e42a1bf70aa6b60a549de6d3a62a0ee90c69e"
+dependencies = [
+ "hermit-abi",
+ "io-lifetimes",
+ "rustix 0.36.17",
+ "windows-sys 0.45.0",
+]
 
 [[package]]
 name = "itoa"
@@ -478,15 +384,15 @@ checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.4.13"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01cda141df6706de531b6c46c3a33ecca755538219bd484262fa09410c13539c"
+checksum = "f051f77a7c8e6957c0696eac88f26b0117e54f52d3fc682ab19397a8812846a4"
 
 [[package]]
-name = "log"
-version = "0.4.21"
+name = "linux-raw-sys"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
+checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
 
 [[package]]
 name = "memchr"
@@ -536,15 +442,6 @@ dependencies = [
  "syn 1.0.107",
 ]
 
-[[package]]
-name = "num-traits"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "once_cell"
 version = "1.19.0"
@@ -557,7 +454,7 @@ version = "6.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8c4b31c8722ad9171c6d77d3557db078cab2bd50afcc9d09c8b315c59df8ca4f"
 dependencies = [
- "bitflags 1.3.2",
+ "bitflags",
  "libc",
  "once_cell",
  "onig_sys",
@@ -573,6 +470,12 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "os_str_bytes"
+version = "6.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2355d85b9a3786f481747ced0e0ff2ba35213a1f9bd406ed906554d7af805a1"
+
 [[package]]
 name = "phf"
 version = "0.11.1"
@@ -604,19 +507,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd39bc6cdc9355ad1dc5eeedefee696bb35c34caf21768741e81826c0bbd7225"
 dependencies = [
  "base64",
- "indexmap 1.9.2",
+ "indexmap",
  "line-wrap",
  "serde",
  "time",
  "xml-rs",
 ]
 
-[[package]]
-name = "ppv-lite86"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
-
 [[package]]
 name = "proc-macro-crate"
 version = "1.2.1"
@@ -629,61 +526,38 @@ dependencies = [
 ]
 
 [[package]]
-name = "proc-macro2"
-version = "1.0.81"
+name = "proc-macro-error"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
+checksum = "da25490ff9892aab3fcf7c36f08cfb902dd3e71ca0f9f9517bea02a73a5ce38c"
 dependencies = [
- "unicode-ident",
-]
-
-[[package]]
-name = "propfuzz"
-version = "0.0.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf775bd278492e4908c866f47385a46c4a07f66bb373aff4745f59abb19c4df5"
-dependencies = [
- "propfuzz-macro",
- "proptest",
+ "proc-macro-error-attr",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.107",
+ "version_check",
 ]
 
 [[package]]
-name = "propfuzz-macro"
-version = "0.0.1"
+name = "proc-macro-error-attr"
+version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d5b9b3697fc8ff26a9da20efc7029679d664794f7dd906cfa6cf72ea1523ff6"
+checksum = "a1be40180e52ecc98ad80b184934baf3d0d29f979574e439af5a55274b35f869"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 1.0.107",
+ "version_check",
 ]
 
 [[package]]
-name = "proptest"
-version = "0.10.1"
+name = "proc-macro2"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12e6c80c1139113c28ee4670dc50cc42915228b51f56a9e407f0ec60f966646f"
+checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
 dependencies = [
- "bit-set",
- "bitflags 1.3.2",
- "byteorder",
- "lazy_static",
- "num-traits",
- "quick-error",
- "rand",
- "rand_chacha",
- "rand_xorshift",
- "regex-syntax 0.6.28",
- "rusty-fork",
- "tempfile",
+ "unicode-ident",
 ]
 
-[[package]]
-name = "quick-error"
-version = "1.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
-
 [[package]]
 name = "quote"
 version = "1.0.36"
@@ -693,77 +567,15 @@ dependencies = [
  "proc-macro2",
 ]
 
-[[package]]
-name = "rand"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
-dependencies = [
- "getrandom",
- "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
-dependencies = [
- "ppv-lite86",
- "rand_core",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "rand_hc"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
-dependencies = [
- "rand_core",
-]
-
-[[package]]
-name = "rand_xorshift"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77d416b86801d23dde1aa643023b775c3a462efc0ed96443add11546cdf1dca8"
-dependencies = [
- "rand_core",
-]
-
 [[package]]
 name = "regex"
-version = "1.10.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
-dependencies = [
- "aho-corasick",
- "memchr",
- "regex-automata",
- "regex-syntax 0.8.3",
-]
-
-[[package]]
-name = "regex-automata"
-version = "0.4.6"
+version = "1.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
+checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax 0.8.3",
+ "regex-syntax",
 ]
 
 [[package]]
@@ -772,35 +584,32 @@ version = "0.6.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "456c603be3e8d448b072f410900c09faf164fbce2d480456f50eea6e25f9c848"
 
-[[package]]
-name = "regex-syntax"
-version = "0.8.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adad44e29e4c806119491a7f06f03de4d1af22c3a680dd47f1e6e179439d1f56"
-
 [[package]]
 name = "rustix"
-version = "0.38.32"
+version = "0.36.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65e04861e65f21776e67888bfbea442b3642beaa0138fdb1dd7a84a52dffdb89"
+checksum = "305efbd14fde4139eb501df5f136994bb520b033fa9fbdce287507dc23b8c7ed"
 dependencies = [
- "bitflags 2.5.0",
+ "bitflags",
  "errno",
+ "io-lifetimes",
  "libc",
- "linux-raw-sys",
- "windows-sys 0.52.0",
+ "linux-raw-sys 0.1.4",
+ "windows-sys 0.45.0",
 ]
 
 [[package]]
-name = "rusty-fork"
-version = "0.3.0"
+name = "rustix"
+version = "0.37.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb3dcc6e454c328bb824492db107ab7c0ae8fcffe4ad210136ef014458c1bc4f"
+checksum = "fea8ca367a3a01fe35e6943c400addf443c0f57670e6ec51196f71a4b8762dd2"
 dependencies = [
- "fnv",
- "quick-error",
- "tempfile",
- "wait-timeout",
+ "bitflags",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys 0.3.8",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -854,9 +663,9 @@ dependencies = [
 
 [[package]]
 name = "serde_spanned"
-version = "0.6.5"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb3622f419d1296904700073ea6cc23ad690adbd66f13ea683df73298736f0c1"
+checksum = "0efd8caf556a6cebd3b285caf480045fcc1ac04f6bd786b09a6f11af30c4fcf4"
 dependencies = [
  "serde",
 ]
@@ -875,12 +684,11 @@ checksum = "7bd3e3206899af3f8b12af284fafc038cc1dc2b41d1b89dd17297221c5d225de"
 
 [[package]]
 name = "slug"
-version = "0.1.5"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3bd94acec9c8da640005f8e135a39fc0372e74535e6b368b7a04b875f784c8c4"
+checksum = "b3bc762e6a4b6c6fcaade73e77f9ebc6991b676f88bb2358bddb56560f073373"
 dependencies = [
- "deunicode",
- "wasm-bindgen",
+ "deunicode 0.4.5",
 ]
 
 [[package]]
@@ -889,12 +697,6 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
-[[package]]
-name = "strsim"
-version = "0.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
-
 [[package]]
 name = "syn"
 version = "1.0.107"
@@ -924,7 +726,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c6c454c27d9d7d9a84c7803aaa3c50cd088d2906fe3c6e42da3209aa623576a8"
 dependencies = [
  "bincode",
- "bitflags 1.3.2",
+ "bitflags",
  "fancy-regex",
  "flate2",
  "fnv",
@@ -932,7 +734,7 @@ dependencies = [
  "once_cell",
  "onig",
  "plist",
- "regex-syntax 0.6.28",
+ "regex-syntax",
  "serde",
  "serde_derive",
  "serde_json",
@@ -942,24 +744,21 @@ dependencies = [
 ]
 
 [[package]]
-name = "tempfile"
-version = "3.10.1"
+name = "termcolor"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
+checksum = "06794f8f6c5c898b3275aebefa6b8a1cb24cd2c6c79397ab15774837a0bc5755"
 dependencies = [
- "cfg-if",
- "fastrand",
- "rustix",
- "windows-sys 0.52.0",
+ "winapi-util",
 ]
 
 [[package]]
 name = "terminal_size"
-version = "0.3.0"
+version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21bebf2b7c9e0a515f6e0f8c51dc0f8e4696391e6f1ff30379559f8365fb0df7"
+checksum = "8e6bf6f19e9f8ed8d4048dc22981458ebcf406d67e94cd422e5ecd73d63b3237"
 dependencies = [
- "rustix",
+ "rustix 0.37.27",
  "windows-sys 0.48.0",
 ]
 
@@ -1021,9 +820,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.8.12"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9dd1545e8208b4a5af1aa9bbd0b4cf7e9ea08fabc5d0a5c67fcaafa17433aa3"
+checksum = "b403acf6f2bb0859c93c7f0d967cb4a75a7ac552100f9322faf64dc047669b21"
 dependencies = [
  "serde",
  "serde_spanned",
@@ -1033,20 +832,20 @@ dependencies = [
 
 [[package]]
 name = "toml_datetime"
-version = "0.6.5"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3550f4e9685620ac18a50ed434eb3aec30db8ba93b0287467bca5826ea25baf1"
+checksum = "3ab8ed2edee10b50132aed5f331333428b011c99402b5a534154ed15746f9622"
 dependencies = [
  "serde",
 ]
 
 [[package]]
 name = "toml_edit"
-version = "0.22.9"
+version = "0.19.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e40bb779c5187258fd7aad0eb68cb8706a0a81fa712fbea808ab43c4b8374c4"
+checksum = "08de71aa0d6e348f070457f85af8bd566e2bc452156a423ddf22861b3a953fae"
 dependencies = [
- "indexmap 2.2.6",
+ "indexmap",
  "serde",
  "serde_spanned",
  "toml_datetime",
@@ -1072,19 +871,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39ec24b3121d976906ece63c9daad25b85969647682eee313cb5779fdd69e14e"
 
 [[package]]
-name = "utf8parse"
-version = "0.2.1"
+name = "version_check"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
-
-[[package]]
-name = "wait-timeout"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
-dependencies = [
- "libc",
-]
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "walkdir"
@@ -1097,66 +887,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "wasi"
-version = "0.9.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
-
-[[package]]
-name = "wasm-bindgen"
-version = "0.2.84"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "31f8dcbc21f30d9b8f2ea926ecb58f6b91192c17e9d33594b3df58b2007ca53b"
-dependencies = [
- "cfg-if",
- "wasm-bindgen-macro",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.84"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95ce90fd5bcc06af55a641a86428ee4229e44e07033963a2290a8e241607ccb9"
-dependencies = [
- "bumpalo",
- "log",
- "once_cell",
- "proc-macro2",
- "quote",
- "syn 1.0.107",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-macro"
-version = "0.2.84"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c21f77c0bedc37fd5dc21f897894a5ca01e7bb159884559461862ae90c0b4c5"
-dependencies = [
- "quote",
- "wasm-bindgen-macro-support",
-]
-
-[[package]]
-name = "wasm-bindgen-macro-support"
-version = "0.2.84"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2aff81306fcac3c7515ad4e177f521b5c9a15f2b08f4e32d823066102f35a5f6"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.107",
- "wasm-bindgen-backend",
- "wasm-bindgen-shared",
-]
-
-[[package]]
-name = "wasm-bindgen-shared"
-version = "0.2.84"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0046fef7e28c3804e5e38bfa31ea2a0f73905319b677e57ebe37e49358989b5d"
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1188,6 +918,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows-sys"
+version = "0.45.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75283be5efb2831d37ea142365f009c02ec203cd29a3ebecbc093d52315b66d0"
+dependencies = [
+ "windows-targets 0.42.2",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.48.0"
@@ -1206,6 +945,21 @@ dependencies = [
  "windows-targets 0.52.4",
 ]
 
+[[package]]
+name = "windows-targets"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e5180c00cd44c9b1c88adb3693291f1cd93605ded80c250a75d472756b4d071"
+dependencies = [
+ "windows_aarch64_gnullvm 0.42.2",
+ "windows_aarch64_msvc 0.42.2",
+ "windows_i686_gnu 0.42.2",
+ "windows_i686_msvc 0.42.2",
+ "windows_x86_64_gnu 0.42.2",
+ "windows_x86_64_gnullvm 0.42.2",
+ "windows_x86_64_msvc 0.42.2",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.48.5"
@@ -1236,6 +990,12 @@ dependencies = [
  "windows_x86_64_msvc 0.52.4",
 ]
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "597a5118570b68bc08d8d59125332c54f1ba9d9adeedeef5b99b02ba2b0698f8"
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.48.5"
@@ -1248,6 +1008,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bcf46cf4c365c6f2d1cc93ce535f2c8b244591df96ceee75d8e83deb70a9cac9"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e08e8864a60f06ef0d0ff4ba04124db8b0fb3be5776a5cd47641e942e58c4d43"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.48.5"
@@ -1260,6 +1026,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "da9f259dd3bcf6990b55bffd094c4f7235817ba4ceebde8e6d11cd0c5633b675"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c61d927d8da41da96a81f029489353e68739737d3beca43145c8afec9a31a84f"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.48.5"
@@ -1272,6 +1044,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b474d8268f99e0995f25b9f095bc7434632601028cf86590aea5c8a5cb7801d3"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.48.5"
@@ -1284,6 +1062,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1515e9a29e5bed743cb4415a9ecf5dfca648ce85ee42e15873c3cd8610ff8e02"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.48.5"
@@ -1296,6 +1080,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5eee091590e89cc02ad514ffe3ead9eb6b660aedca2183455434b93546371a03"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.48.5"
@@ -1308,6 +1098,12 @@ version = "0.52.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "77ca79f2451b49fa9e2af39f0747fe999fcda4f5e241b2898624dca97a1f2177"
 
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.48.5"
@@ -1322,9 +1118,9 @@ checksum = "32b752e52a2da0ddfbdbcc6fceadfeede4c939ed16d13e648833a61dfb611ed8"
 
 [[package]]
 name = "winnow"
-version = "0.6.6"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0c976aaaa0e1f90dbb21e9587cdaf1d9679a1cde8875c0d6bd83ab96a208352"
+checksum = "da01e24d23aeb852fb05609f2701ce4da9f73d58857239ed3853667cf178f204"
 dependencies = [
  "memchr",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index e0ac96b1..1fc429a3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,7 @@ doc = false
 
 [dependencies]
 typed-arena = "2.0.2"
-regex = "1.10.4"
+regex = "1"
 once_cell = "1.19.0"
 entities = "1.0.1"
 unicode_categories = "0.1.1"
@@ -46,18 +46,14 @@ slug = "0.1.4"
 emojis = { version = "0.6.2", optional = true }
 arbitrary = { version = "1", optional = true, features = ["derive"] }
 derive_builder = "0.20.0"
-in-place = { version = "0.2.0", optional = true }
 
 [dev-dependencies]
 ntest = "0.9"
-toml = "0.8"
-
-[target.'cfg(not(target_arch="wasm32"))'.dev-dependencies]
-propfuzz = "0.0.1"
+toml = "0.7.3"
 
 [features]
 default = ["cli", "syntect"]
-cli = ["clap", "shell-words", "xdg", "in-place"]
+cli = ["clap", "shell-words", "xdg"]
 shortcodes = ["emojis"]
 
 [target.'cfg(all(not(windows), not(target_arch="wasm32")))'.dependencies]
@@ -67,7 +63,7 @@ xdg = { version = "^2.5", optional = true }
 syntect = { version = "5.0", optional = true, default-features = false, features = [
     "default-fancy",
 ] }
-clap = { version = "4.5", optional = true, features = ["derive", "string"] }
+clap = { version = "4.0.32", optional = true, features = ["derive", "string"] }
 
 [target.'cfg(not(target_arch="wasm32"))'.dependencies]
 syntect = { version = "5.0", optional = true, default-features = false, features = [
diff --git a/examples/update-readme.rs b/examples/update-readme.rs
index 2b310ae1..fab08d70 100644
--- a/examples/update-readme.rs
+++ b/examples/update-readme.rs
@@ -1,6 +1,5 @@
 // Update the "comrak --help" text in Comrak's own README.
 
-use in_place::InPlace;
 use std::error::Error;
 use std::fmt::Write;
 use std::str;
@@ -15,8 +14,7 @@ const HELP: &str = "$ comrak --help\n";
 fn main() -> Result<(), Box<dyn Error>> {
     let arena = Arena::new();
 
-    let inp = InPlace::new("README.md").open()?;
-    let readme = std::io::read_to_string(inp.reader())?;
+    let readme = std::fs::read_to_string("README.md")?;
     let doc = parse_document(&arena, &readme, &Options::default());
 
     let cargo_toml = std::fs::read_to_string("Cargo.toml")?.parse::<Table>()?;
@@ -70,8 +68,9 @@ fn main() -> Result<(), Box<dyn Error>> {
         }
     }
 
-    format_commonmark(doc, &Options::default(), &mut inp.writer())?;
-    inp.save()?;
+    let mut out = vec![];
+    format_commonmark(doc, &Options::default(), &mut out)?;
+    std::fs::write("README.md", &out)?;
 
     Ok(())
 }
diff --git a/script/cibuild b/script/cibuild
index e5191f3d..503c7124 100755
--- a/script/cibuild
+++ b/script/cibuild
@@ -8,54 +8,42 @@ fi
 
 failed=0
 
-if [ x"$SPEC" = "xtrue" ]; then
-	cargo build --verbose --release
-
-	cd vendor/cmark-gfm/test
-
-	PROGRAM_ARG="--program=../../../target/release/comrak --syntax-highlighting none"
-
-	set +e
-	python3 spec_tests.py --no-normalize --spec spec.txt "$PROGRAM_ARG" \
-		|| failed=1
-	python3 pathological_tests.py "$PROGRAM_ARG" \
-		|| failed=1
-	python3 roundtrip_tests.py --spec spec.txt "$PROGRAM_ARG" \
-		|| failed=1
-	python3 entity_tests.py "$PROGRAM_ARG" \
-		|| failed=1
-	python3 spec_tests.py --no-normalize --spec smart_punct.txt "$PROGRAM_ARG --smart" \
-		|| failed=1
-
-	python3 spec_tests.py --no-normalize --spec extensions.txt "$PROGRAM_ARG" --extensions "table strikethrough autolink tagfilter footnotes tasklist" \
-		|| failed=1
-	python3 roundtrip_tests.py --spec extensions.txt "$PROGRAM_ARG" --extensions "table strikethrough autolink tagfilter footnotes tasklist" \
-		|| failed=1
-	# python3 roundtrip_tests.py --spec extensions-table-prefer-style-attributes.txt "$PROGRAM_ARG --table-prefer-style-attributes" --extensions "table strikethrough autolink tagfilter footnotes tasklist" || failed=1
-	python3 roundtrip_tests.py --spec extensions-full-info-string.txt "$PROGRAM_ARG --full-info-string" \
-		|| failed=1
-	python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/multiline_blockquote.md "$PROGRAM_ARG -e multiline-block-quotes" \
-		|| failed=1
-  python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/math_dollars.md "$PROGRAM_ARG -e math-dollars" \
-    || failed=1
-  python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/math_code.md "$PROGRAM_ARG -e math-code" \
-    || failed=1
-
-	python3 spec_tests.py --no-normalize --spec regression.txt "$PROGRAM_ARG" \
-		|| failed=1
-	set -e
-else
-	set +e
-	cargo build --verbose \
-		|| failed=1
-	cargo build --verbose --examples \
-		|| failed=1
-
-	cargo test --verbose \
-		|| failed=1
-	cargo run --example sample \
-		|| failed=1
-	set -e
-fi
+cargo build --verbose --release
+
+cd vendor/cmark-gfm/test
+
+PROGRAM_ARG="--program=../../../target/release/comrak --syntax-highlighting none"
+
+set +e
+
+python3 spec_tests.py --no-normalize --spec spec.txt "$PROGRAM_ARG" \
+	|| failed=1
+python3 pathological_tests.py "$PROGRAM_ARG" \
+	|| failed=1
+python3 roundtrip_tests.py --spec spec.txt "$PROGRAM_ARG" \
+	|| failed=1
+python3 entity_tests.py "$PROGRAM_ARG" \
+	|| failed=1
+python3 spec_tests.py --no-normalize --spec smart_punct.txt "$PROGRAM_ARG --smart" \
+	|| failed=1
+
+python3 spec_tests.py --no-normalize --spec extensions.txt "$PROGRAM_ARG" --extensions "table strikethrough autolink tagfilter footnotes tasklist" \
+	|| failed=1
+python3 roundtrip_tests.py --spec extensions.txt "$PROGRAM_ARG" --extensions "table strikethrough autolink tagfilter footnotes tasklist" \
+	|| failed=1
+# python3 roundtrip_tests.py --spec extensions-table-prefer-style-attributes.txt "$PROGRAM_ARG --table-prefer-style-attributes" --extensions "table strikethrough autolink tagfilter footnotes tasklist" || failed=1
+python3 roundtrip_tests.py --spec extensions-full-info-string.txt "$PROGRAM_ARG --full-info-string" \
+	|| failed=1
+python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/multiline_blockquote.md "$PROGRAM_ARG -e multiline-block-quotes" \
+	|| failed=1
+python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/math_dollars.md "$PROGRAM_ARG -e math-dollars" \
+  || failed=1
+python3 spec_tests.py --no-normalize --spec ../../../src/tests/fixtures/math_code.md "$PROGRAM_ARG -e math-code" \
+  || failed=1
+
+python3 spec_tests.py --no-normalize --spec regression.txt "$PROGRAM_ARG" \
+	|| failed=1
+
+set -e
 
 exit $failed
diff --git a/src/main.rs b/src/main.rs
index d2cbd3e7..a259232b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,7 +14,6 @@ use std::path::PathBuf;
 use std::process;
 
 use clap::{Parser, ValueEnum};
-use in_place::InPlace;
 
 const EXIT_SUCCESS: i32 = 0;
 const EXIT_PARSE_CONFIG: i32 = 2;
@@ -327,11 +326,10 @@ fn main() -> Result<(), Box<dyn Error>> {
         formatter(root, &options, &mut bw, &plugins)?;
         bw.flush()?;
     } else if cli.inplace {
-        let inp: in_place::InPlaceFile =
-            InPlace::new(unsafe { cli.files.unwrap_unchecked().get_unchecked(0) }).open()?;
-        let mut bw = inp.writer();
+        let output_filename = cli.files.unwrap().get(0).unwrap().clone();
+        let mut bw = BufWriter::new(fs::File::create(output_filename)?);
         formatter(root, &options, &mut bw, &plugins)?;
-        inp.save()?;
+        bw.flush()?;
     } else {
         let stdout = std::io::stdout();
         let mut bw = BufWriter::new(stdout.lock());
diff --git a/src/tests.rs b/src/tests.rs
index 42d46762..a3467bf9 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -18,7 +18,6 @@ mod multiline_block_quotes;
 mod options;
 mod pathological;
 mod plugins;
-mod propfuzz;
 mod regressions;
 mod shortcodes;
 mod strikethrough;
diff --git a/src/tests/propfuzz.rs b/src/tests/propfuzz.rs
deleted file mode 100644
index 13ff71a5..00000000
--- a/src/tests/propfuzz.rs
+++ /dev/null
@@ -1,47 +0,0 @@
-use crate::*;
-
-#[cfg(not(target_arch = "wasm32"))]
-use propfuzz::prelude::*;
-
-#[cfg(not(target_arch = "wasm32"))]
-#[propfuzz]
-fn propfuzz_doesnt_crash(md: String) {
-    let options = Options {
-        extension: ExtensionOptions {
-            strikethrough: true,
-            tagfilter: true,
-            table: true,
-            autolink: true,
-            tasklist: true,
-            superscript: true,
-            header_ids: Some("user-content-".to_string()),
-            footnotes: true,
-            description_lists: true,
-            multiline_block_quotes: true,
-            math_dollars: true,
-            math_code: true,
-            front_matter_delimiter: None,
-            #[cfg(feature = "shortcodes")]
-            shortcodes: true,
-        },
-        parse: ParseOptions {
-            smart: true,
-            default_info_string: Some("Rust".to_string()),
-            relaxed_tasklist_matching: true,
-            relaxed_autolinks: true,
-        },
-        render: RenderOptions {
-            hardbreaks: true,
-            github_pre_lang: true,
-            full_info_string: true,
-            width: 80,
-            unsafe_: true,
-            escape: false,
-            list_style: ListStyleType::Dash,
-            sourcepos: true,
-            escaped_char_spans: true,
-        },
-    };
-
-    parse_document(&Arena::new(), &md, &options);
-}

From f996ba7587ad3b3083b1d8ddcd89dc5d55acbb64 Mon Sep 17 00:00:00 2001
From: Asherah Connor <ashe@kivikakk.ee>
Date: Thu, 9 May 2024 21:57:35 +0300
Subject: [PATCH 3/5] workflows: cargo build --bin takes an argument.

---
 .github/workflows/rust.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index eaa64c6d..452c46c7 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -45,7 +45,7 @@ jobs:
     - name: Obtain Rust
       run: rustup override set ${{ matrix.rust }}
     - name: Build binary
-      run: cargo build --verbose --bin --release
+      run: cargo build --verbose --bin comrak --release
     - name: Run spec tests
       run: script/cibuild
   build_wasm:

From dca26d4dec66a73d37676806f10b6c21356a2aa5 Mon Sep 17 00:00:00 2001
From: Asherah Connor <ashe@kivikakk.ee>
Date: Thu, 9 May 2024 22:00:30 +0300
Subject: [PATCH 4/5] wip.

---
 Cargo.lock | 30 ++++++++++++++++++++++++------
 Cargo.toml |  6 ++++--
 2 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index ff26f2db..62f1402b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -10,9 +10,9 @@ checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
 
 [[package]]
 name = "aho-corasick"
-version = "0.7.20"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
 dependencies = [
  "memchr",
 ]
@@ -569,13 +569,25 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.5.5"
+version = "1.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
+checksum = "ebee201405406dbf528b8b672104ae6d6d63e6d118cb10e4d51abbc7b58044ff"
 dependencies = [
  "aho-corasick",
  "memchr",
- "regex-syntax",
+ "regex-automata",
+ "regex-syntax 0.7.5",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59b23e92ee4318893fa3fe3e6fb365258efbfe6ac6ab30f090cdcbb7aa37efa9"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax 0.7.5",
 ]
 
 [[package]]
@@ -584,6 +596,12 @@ version = "0.6.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "456c603be3e8d448b072f410900c09faf164fbce2d480456f50eea6e25f9c848"
 
+[[package]]
+name = "regex-syntax"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb5fb1acd8a1a18b3dd5be62d25485eb770e05afb408a9627d14d451bae12da"
+
 [[package]]
 name = "rustix"
 version = "0.36.17"
@@ -734,7 +752,7 @@ dependencies = [
  "once_cell",
  "onig",
  "plist",
- "regex-syntax",
+ "regex-syntax 0.6.28",
  "serde",
  "serde_derive",
  "serde_json",
diff --git a/Cargo.toml b/Cargo.toml
index 1fc429a3..8a08f4de 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -36,7 +36,7 @@ doc = false
 
 [dependencies]
 typed-arena = "2.0.2"
-regex = "1"
+regex = "= 1.9.6" # Latest to support 1.62.1.
 once_cell = "1.19.0"
 entities = "1.0.1"
 unicode_categories = "0.1.1"
@@ -72,7 +72,9 @@ syntect = { version = "5.0", optional = true, default-features = false, features
     "html",
     "regex-onig",
 ] }
-clap = { version = "4.0", optional = true, features = [
+
+# Latest to support 1.62.1.
+clap = { version = "= 4.0.32", optional = true, features = [
     "derive",
     "string",
     "wrap_help",

From f8d2f363143ac41c5dafac26a2f978969bfa724e Mon Sep 17 00:00:00 2001
From: Asherah Connor <ashe@kivikakk.ee>
Date: Thu, 9 May 2024 23:06:26 +0300
Subject: [PATCH 5/5] workflows: add check that declared MSRV is the same one
 as tested.

---
 .github/workflows/msrv.yml         | 10 ++++++++++
 script/check-msrv-matches-workflow | 21 +++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 .github/workflows/msrv.yml
 create mode 100755 script/check-msrv-matches-workflow

diff --git a/.github/workflows/msrv.yml b/.github/workflows/msrv.yml
new file mode 100644
index 00000000..cfb636ca
--- /dev/null
+++ b/.github/workflows/msrv.yml
@@ -0,0 +1,10 @@
+name: Ensure declared MSRV is tested
+
+on: [push, pull_request]
+
+jobs:
+  ensure_msrv:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - run: script/check-msrv-matches-workflow
diff --git a/script/check-msrv-matches-workflow b/script/check-msrv-matches-workflow
new file mode 100755
index 00000000..f3ebe6a3
--- /dev/null
+++ b/script/check-msrv-matches-workflow
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+CI_FILE=".github/workflows/rust.yml"
+
+MSRV=$(
+  grep -E '^rust-version = "[^"]+"$' Cargo.toml |
+  head -n 1 |
+  cut -d\" -f2
+)
+
+TESTED=$(
+  grep -E '^\s*MSRV: \S+$' $CI_FILE |
+  awk '{ print $2 }'
+)
+
+if test "$MSRV" != "$TESTED"; then
+  echo "MSRV used in $CI_FILE ($TESTED) doesn't match Cargo.toml's rust-version declaration ($MSRV)."
+  exit 1
+fi
+
+echo "MSRV: $MSRV"