diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..730cb5e
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,48 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  test:
+    name: Test (Python ${{ matrix.python-version }})
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install package
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e .
+
+      - name: Show version
+        run: |
+          tir-csv --version || true
+
+      - name: Run tests
+        run: |
+          chmod +x tests/run.sh
+          tests/run.sh
+
+      - name: Build package
+        run: |
+          pip install build
+          python -m build
+
+      - name: Check package
+        run: |
+          pip install twine
+          twine check dist/*
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..2222f3e
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,30 @@
+name: Publish to PyPI
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - run: |
+          python -m pip install --upgrade pip
+          pip install build
+
+      - run: python -m build
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/README.md b/README.md
index b47abaa..4294109 100644
--- a/README.md
+++ b/README.md
@@ -10,4 +10,7 @@ pip install tir-csv
 
 ## Usage
 
-tir-csv parse file.csv
+```bash
+tir-csv parse file.csv > file.tir
+tir-csv unparse file.csv < file.tir
+```
diff --git a/pyproject.toml b/pyproject.toml
index def1502..bcaedff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,16 +1,19 @@
-[build-system]
-requires = ["setuptools>=61"]
-build-backend = "setuptools.build_meta"
-
 [project]
 name = "tir-csv"
-version = "0.1.2"
 description = "CSV/TSV <-> TIR converter backend for tirenvi"
 readme = "README.md"
 requires-python = ">=3.9"
 license = { text = "MIT" }
 authors = [{ name = "OGAWA Keiji" }]
 dependencies = []
+scripts = { tir-csv = "tir_csv.cli:main" }
+
+dynamic = ["version"]
+
+[build-system]
+requires = ["setuptools>=61", "setuptools_scm"]
+build-backend = "setuptools.build_meta"
 
-[project.scripts]
-tir-csv = "tir_csv.cli:main"
+[tool.setuptools_scm]
+version_scheme = "no-guess-dev"
+local_scheme = "no-local-version"
diff --git a/src/tir_csv/parser.py b/src/tir_csv/parser.py
index be6248d..1acd650 100755
--- a/src/tir_csv/parser.py
+++ b/src/tir_csv/parser.py
@@ -7,7 +7,6 @@
 from typing import Optional
 from tir_csv.io_utils import input_stream_csv, output_stream_csv
 
-__version__ = "0.1.2"
 FORMAT_VERSION = "tir/0.1"
 
 # ------------------------------------------------------------
@@ -79,6 +78,12 @@ def unparse(output_file_path: Optional[str], delimiter: str = ",") -> None:
 # utilities
 # ------------------------------------------------------------
 
+from importlib.metadata import version
+
+
+def get_version():
+    return version("tir-csv")
+
 
 def normalize_cell(cell: str) -> str:
     return cell.replace("\r\n", "\n").replace("\r", "\n")
@@ -86,7 +91,7 @@ def normalize_cell(cell: str) -> str:
 
 def usage() -> None:
     print(
-        f"""tir-csv {__version__}
+        f"""tir-csv {get_version()}
 
 usage:
   tir-csv parse   [--delimiter DELIM] [file|-]
@@ -143,7 +148,7 @@ def run(argv) -> int:
         return 1
 
     if args[0] == "--version":
-        print(__version__)
+        print(get_version())
         return 0
 
     if len(args) not in (1, 2):
diff --git a/tests/.gitignore b/tests/.gitignore
index 01308b5..f68f03c 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -1,7 +1,8 @@
 # --- Generated by test runner ---
+!data/
 
 # Actual output (never commit)
-out-actual
+out-actual.txt
 gen*
 diff-*
 
diff --git a/tests/cases/check/rg_no_ascii/out-expected.txt b/tests/cases/check/rg_no_ascii/out-expected.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/cases/check/rg_no_ascii/run.sh b/tests/cases/check/rg_no_ascii/run.sh
new file mode 100644
index 0000000..15d4a47
--- /dev/null
+++ b/tests/cases/check/rg_no_ascii/run.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+set -eu
+
+rg -n -g '*.py' -g '*.sh' '[^\x00-\x7F]' $TIRENVI_ROOT > out-actual.txt
\ No newline at end of file
diff --git a/tests/cases/tir-csv/help/out-expected b/tests/cases/tir-csv/help/out-expected.txt
similarity index 96%
rename from tests/cases/tir-csv/help/out-expected
rename to tests/cases/tir-csv/help/out-expected.txt
index 78e70d3..66aea63 100644
--- a/tests/cases/tir-csv/help/out-expected
+++ b/tests/cases/tir-csv/help/out-expected.txt
@@ -1,5 +1,4 @@
 unknown sub command: help
-tir-csv 0.1.2
 
 usage:
   tir-csv parse   [--delimiter DELIM] [file|-]
diff --git a/tests/cases/tir-csv/help/run.sh b/tests/cases/tir-csv/help/run.sh
index c92fc9e..2f93870 100755
--- a/tests/cases/tir-csv/help/run.sh
+++ b/tests/cases/tir-csv/help/run.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 # help
 set -u
-exec > out-actual 2>&1
 
-tir-csv help
\ No newline at end of file
+tir-csv help > gen.txt 2>&1
+grep -vE '^tir-csv [0-9]' gen.txt > out-actual.txt || true
\ No newline at end of file
diff --git a/tests/cases/tir-csv/parse-file/out-expected b/tests/cases/tir-csv/parse-file/out-expected.txt
similarity index 100%
rename from tests/cases/tir-csv/parse-file/out-expected
rename to tests/cases/tir-csv/parse-file/out-expected.txt
diff --git a/tests/cases/tir-csv/parse-file/run.sh b/tests/cases/tir-csv/parse-file/run.sh
index 8d1f52b..2e21586 100755
--- a/tests/cases/tir-csv/parse-file/run.sh
+++ b/tests/cases/tir-csv/parse-file/run.sh
@@ -2,7 +2,7 @@
 # Test that newline and tab characters are correctly converted to \n and \t
 # When a file name is specified, the absolute path of the file is output
 set -eu
-exec > out-actual 2>&1
+exec > out-actual.txt 2>&1
 
 # tir-csv parse "$TIRENVI_ROOT/tests/data/complex.csv" | sed "s|$TIRENVI_ROOT|/<ABS_PATH>|g"
 
diff --git a/tests/cases/tir-csv/parse-stdin/out-expected b/tests/cases/tir-csv/parse-stdin/out-expected.txt
similarity index 100%
rename from tests/cases/tir-csv/parse-stdin/out-expected
rename to tests/cases/tir-csv/parse-stdin/out-expected.txt
diff --git a/tests/cases/tir-csv/parse-stdin/run.sh b/tests/cases/tir-csv/parse-stdin/run.sh
index 257526d..5f6af58 100755
--- a/tests/cases/tir-csv/parse-stdin/run.sh
+++ b/tests/cases/tir-csv/parse-stdin/run.sh
@@ -2,6 +2,6 @@
 # When input is provided via stdin, the file name becomes null
 
 set -eu
-exec > out-actual 2>&1
+exec > out-actual.txt 2>&1
 
 tir-csv parse < "$TIRENVI_ROOT/tests/data/complex.csv"
diff --git a/tests/cases/tir-csv/unparse/out-expected b/tests/cases/tir-csv/unparse/out-expected.txt
similarity index 100%
rename from tests/cases/tir-csv/unparse/out-expected
rename to tests/cases/tir-csv/unparse/out-expected.txt
diff --git a/tests/cases/tir-csv/unparse/run.sh b/tests/cases/tir-csv/unparse/run.sh
index 1251f91..eab1c97 100755
--- a/tests/cases/tir-csv/unparse/run.sh
+++ b/tests/cases/tir-csv/unparse/run.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
 set -eu
-exec > out-actual 2>&1
+exec > out-actual.txt 2>&1
 
 tir-csv unparse < "$TIRENVI_ROOT/tests/data/complex.tir"
diff --git a/tests/cases/tir-tsv/parse-file/out-expected b/tests/cases/tir-tsv/parse-file/out-expected.txt
similarity index 100%
rename from tests/cases/tir-tsv/parse-file/out-expected
rename to tests/cases/tir-tsv/parse-file/out-expected.txt
diff --git a/tests/cases/tir-tsv/parse-file/run.sh b/tests/cases/tir-tsv/parse-file/run.sh
index fff2ad1..7ae179f 100755
--- a/tests/cases/tir-tsv/parse-file/run.sh
+++ b/tests/cases/tir-tsv/parse-file/run.sh
@@ -2,6 +2,6 @@
 # Test that newline and tab characters are correctly converted to \n and \t
 # When a file name is specified, the absolute path of the file is output
 set -eu
-exec > out-actual 2>&1
+exec > out-actual.txt 2>&1
 
 tir-csv parse --delimiter "\t" "$TIRENVI_ROOT/tests/data/complex.tsv" | sed "s|$TIRENVI_ROOT|/<ABS_PATH>|g"
\ No newline at end of file
diff --git a/tests/cases/tir-tsv/unparse/out-expected b/tests/cases/tir-tsv/unparse/out-expected.txt
similarity index 100%
rename from tests/cases/tir-tsv/unparse/out-expected
rename to tests/cases/tir-tsv/unparse/out-expected.txt
diff --git a/tests/cases/tir-tsv/unparse/run.sh b/tests/cases/tir-tsv/unparse/run.sh
index 3043a7a..a2e8220 100755
--- a/tests/cases/tir-tsv/unparse/run.sh
+++ b/tests/cases/tir-tsv/unparse/run.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
 set -eu
-exec > out-actual 2>&1
+exec > out-actual.txt 2>&1
 
 tir-csv unparse --delimiter "\t" < "$TIRENVI_ROOT/tests/data/complex.tir"
diff --git a/tests/data/complex.csv b/tests/data/complex.csv
new file mode 100644
index 0000000..fe7a1c0
--- /dev/null
+++ b/tests/data/complex.csv
@@ -0,0 +1,115 @@
+A1,B22,C333,D4444,E55555,F666666
+alpha1,b2,c3,d4,e5,f6
+ ===,- next -, line,  has, no, value 
+,,,,,
+x1,,y22,,z333,
+===, - next -, line,  has,linefeed,  
+"
+""1""2h"", 34567890a",abc,DEF123,"
+
+
+",gh,9
+a,,"b
+",,c,
+ ===,- next -, lines,  has,tab,  
+	 l	ongtext01,mi		d2,s,tt,uuu,vvvv
+,,							,							,,
+R1C1,R1C2,R1C3,R1C4,R1C5,R1C6
+ ===,- next -, line,  is,multibyte, value 
+aaあい,いろ2,ぼんさんが,へを,こいた,.！...
+g1,h22,i333,j4444,k55555,l6
+ ===,- next -, lines,  has,linefeed+,tab  
+		 ,"
+	",n	 ,		 o333,,
+pqrst,uv,wx1,yz22,,345
+,,,,,
+a1b2c3,,XYZ,7777,,k9
+short,longer12,x,yz,,end
+,,,,,
+row15a,row15b,row15c,row15d,row15e,row15f
+1,22,333,4444,55555,666666
+alpha,beta,gamma,delta,epsilon,zeta
+,,,,,
+mix1,,mix3,444,,six6
+abc123,,def456,,ghi789,
+z,,y,,x,
+,,,,,
+t1,t2,t3,t4,t5,t6
+r1c1,r1c2,,r1c4,,r1c6
+data1,data22,data333,data4444,data55555,data6
+,,,,,
+A,B,C,D,E,F
+abc,,123,,XYZ,
+one1,two22,three3,four44,five5,six66
+,,,,,
+r30a,r30b,r30c,r30d,r30e,r30f
+longvalue1,mid,short,s,tt,uuu
+,,,,,
+x,y,z,,,end
+abcde,fghij,klmno,pqrst,uvwxy,z
+,,,,,
+cell1,,cell3,,cell5,
+111,2222,33333,444444,55,6
+,,,,,
+row40a,row40b,row40c,row40d,row40e,row40f
+a1,a2,a3,a4,a5,a6
+,,,,,
+mixA,,mixC,DDD,,FFF
+123abc,456def,,789ghi,,000
+,,,,,
+r45a,r45b,r45c,r45d,r45e,r45f
+alpha9,,beta8,,gamma7,
+,,,,,
+A1B2C3,D4E5F6,G7H8I9,J0,K1,L2
+short1,,short3,,short5,
+,,,,,
+r50a,r50b,r50c,r50d,r50e,r50f
+x1y2,z3,,w4,,v5
+,,,,,
+longertext,mid,small,s1,s22,s333
+,,,,,
+r55a,r55b,r55c,r55d,r55e,r55f
+abc,def,ghi,jkl,mno,pqr
+,,,,,
+1a,2b,3c,4d,5e,6f
+,,,,,
+row60a,row60b,row60c,row60d,row60e,row60f
+value1,,value3,,value5,
+,,,,,
+aa,bb,cc,dd,ee,ff
+,,,,,
+r65a,r65b,r65c,r65d,r65e,r65f
+x,,y,,z,
+,,,,,
+alpha01,beta02,gamma03,delta04,eps05,z6
+,,,,,
+row70a,row70b,row70c,row70d,row70e,row70f
+1,,3,,5,
+,,,,,
+abc1,def2,ghi3,jkl4,mno5,pqr6
+,,,,,
+r75a,r75b,r75c,r75d,r75e,r75f
+mix,,mix2,,mix3,
+,,,,,
+a,b,c,d,e,f
+,,,,,
+row80a,row80b,row80c,row80d,row80e,row80f
+123,234,345,456,567,678
+,,,,,
+Aaa,Bbb,Ccc,Ddd,Eee,Fff
+,,,,,
+r85a,r85b,r85c,r85d,r85e,r85f
+x1,,x3,,x5,
+,,,,,
+abcde12345,f1,g2,h3,i4,j5
+,,,,,
+row90a,row90b,row90c,row90d,row90e,row90f
+1a2b3c,,4d5e6f,,7g8h9i,
+,,,,,
+short,,mid,,longer,
+,,,,,
+r95a,r95b,r95c,r95d,r95e,r95f
+a1b,,c2d,,e3f,
+,,,,,
+end1,end2,end3,end4,end5,end6
+,,,,,
diff --git a/tests/data/complex.tir b/tests/data/complex.tir
new file mode 100644
index 0000000..620ab7d
--- /dev/null
+++ b/tests/data/complex.tir
@@ -0,0 +1,110 @@
+{"kind": "file_attr", "version": "tir/0.1", "file_path": "/<ABS_PATH>/tests/data/complex.csv"}
+{"kind": "grid", "row": ["A1", "B22", "C333", "D4444", "E55555", "F666666"]}
+{"kind": "grid", "row": ["alpha1", "b2", "c3", "d4", "e5", "f6"]}
+{"kind": "grid", "row": [" ===", "- next -", " line", "  has", " no", " value "]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["x1", "", "y22", "", "z333", ""]}
+{"kind": "grid", "row": ["===", " - next -", " line", "  has", "linefeed", "  "]}
+{"kind": "grid", "row": ["\n\"1\"2h\", 34567890a", "abc", "DEF123", "\n\n\n", "gh", "9"]}
+{"kind": "grid", "row": ["a", "", "b\n", "", "c", ""]}
+{"kind": "grid", "row": [" ===", "- next -", " lines", "  has", "tab", "  "]}
+{"kind": "grid", "row": ["\t l\tongtext01", "mi\t\td2", "s", "tt", "uuu", "vvvv"]}
+{"kind": "grid", "row": ["", "", "\t\t\t\t\t\t\t", "\t\t\t\t\t\t\t", "", ""]}
+{"kind": "grid", "row": ["R1C1", "R1C2", "R1C3", "R1C4", "R1C5", "R1C6"]}
+{"kind": "grid", "row": [" ===", "- next -", " line", "  is", "multibyte", " value "]}
+{"kind": "grid", "row": ["aaあい", "いろ2", "ぼんさんが", "へを", "こいた", ".！..."]}
+{"kind": "grid", "row": ["g1", "h22", "i333", "j4444", "k55555", "l6"]}
+{"kind": "grid", "row": [" ===", "- next -", " lines", "  has", "linefeed+", "tab  "]}
+{"kind": "grid", "row": ["\t\t ", "\n\t", "n\t ", "\t\t o333", "", ""]}
+{"kind": "grid", "row": ["pqrst", "uv", "wx1", "yz22", "", "345"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["a1b2c3", "", "XYZ", "7777", "", "k9"]}
+{"kind": "grid", "row": ["short", "longer12", "x", "yz", "", "end"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["row15a", "row15b", "row15c", "row15d", "row15e", "row15f"]}
+{"kind": "grid", "row": ["1", "22", "333", "4444", "55555", "666666"]}
+{"kind": "grid", "row": ["alpha", "beta", "gamma", "delta", "epsilon", "zeta"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["mix1", "", "mix3", "444", "", "six6"]}
+{"kind": "grid", "row": ["abc123", "", "def456", "", "ghi789", ""]}
+{"kind": "grid", "row": ["z", "", "y", "", "x", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["t1", "t2", "t3", "t4", "t5", "t6"]}
+{"kind": "grid", "row": ["r1c1", "r1c2", "", "r1c4", "", "r1c6"]}
+{"kind": "grid", "row": ["data1", "data22", "data333", "data4444", "data55555", "data6"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["A", "B", "C", "D", "E", "F"]}
+{"kind": "grid", "row": ["abc", "", "123", "", "XYZ", ""]}
+{"kind": "grid", "row": ["one1", "two22", "three3", "four44", "five5", "six66"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r30a", "r30b", "r30c", "r30d", "r30e", "r30f"]}
+{"kind": "grid", "row": ["longvalue1", "mid", "short", "s", "tt", "uuu"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["x", "y", "z", "", "", "end"]}
+{"kind": "grid", "row": ["abcde", "fghij", "klmno", "pqrst", "uvwxy", "z"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["cell1", "", "cell3", "", "cell5", ""]}
+{"kind": "grid", "row": ["111", "2222", "33333", "444444", "55", "6"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["row40a", "row40b", "row40c", "row40d", "row40e", "row40f"]}
+{"kind": "grid", "row": ["a1", "a2", "a3", "a4", "a5", "a6"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["mixA", "", "mixC", "DDD", "", "FFF"]}
+{"kind": "grid", "row": ["123abc", "456def", "", "789ghi", "", "000"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r45a", "r45b", "r45c", "r45d", "r45e", "r45f"]}
+{"kind": "grid", "row": ["alpha9", "", "beta8", "", "gamma7", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["A1B2C3", "D4E5F6", "G7H8I9", "J0", "K1", "L2"]}
+{"kind": "grid", "row": ["short1", "", "short3", "", "short5", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r50a", "r50b", "r50c", "r50d", "r50e", "r50f"]}
+{"kind": "grid", "row": ["x1y2", "z3", "", "w4", "", "v5"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["longertext", "mid", "small", "s1", "s22", "s333"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r55a", "r55b", "r55c", "r55d", "r55e", "r55f"]}
+{"kind": "grid", "row": ["abc", "def", "ghi", "jkl", "mno", "pqr"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["1a", "2b", "3c", "4d", "5e", "6f"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["row60a", "row60b", "row60c", "row60d", "row60e", "row60f"]}
+{"kind": "grid", "row": ["value1", "", "value3", "", "value5", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["aa", "bb", "cc", "dd", "ee", "ff"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r65a", "r65b", "r65c", "r65d", "r65e", "r65f"]}
+{"kind": "grid", "row": ["x", "", "y", "", "z", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["alpha01", "beta02", "gamma03", "delta04", "eps05", "z6"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["row70a", "row70b", "row70c", "row70d", "row70e", "row70f"]}
+{"kind": "grid", "row": ["1", "", "3", "", "5", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["abc1", "def2", "ghi3", "jkl4", "mno5", "pqr6"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r75a", "r75b", "r75c", "r75d", "r75e", "r75f"]}
+{"kind": "grid", "row": ["mix", "", "mix2", "", "mix3", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["a", "b", "c", "d", "e", "f"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["row80a", "row80b", "row80c", "row80d", "row80e", "row80f"]}
+{"kind": "grid", "row": ["123", "234", "345", "456", "567", "678"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["Aaa", "Bbb", "Ccc", "Ddd", "Eee", "Fff"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r85a", "r85b", "r85c", "r85d", "r85e", "r85f"]}
+{"kind": "grid", "row": ["x1", "", "x3", "", "x5", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["abcde12345", "f1", "g2", "h3", "i4", "j5"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["row90a", "row90b", "row90c", "row90d", "row90e", "row90f"]}
+{"kind": "grid", "row": ["1a2b3c", "", "4d5e6f", "", "7g8h9i", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["short", "", "mid", "", "longer", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["r95a", "r95b", "r95c", "r95d", "r95e", "r95f"]}
+{"kind": "grid", "row": ["a1b", "", "c2d", "", "e3f", ""]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
+{"kind": "grid", "row": ["end1", "end2", "end3", "end4", "end5", "end6"]}
+{"kind": "grid", "row": ["", "", "", "", "", ""]}
diff --git a/tests/data/complex.tsv b/tests/data/complex.tsv
new file mode 100644
index 0000000..3a7645d
--- /dev/null
+++ b/tests/data/complex.tsv
@@ -0,0 +1,115 @@
+A1	B22	C333	D4444	E55555	F666666
+alpha1	b2	c3	d4	e5	f6
+ ===	- next -	 line	  has	 no	 value 
+					
+x1		y22		z333	
+===	 - next -	 line	  has	linefeed	  
+"
+""1""2h"", 34567890a"	abc	DEF123	"
+
+
+"	gh	9
+a		"b
+"		c	
+ ===	- next -	 lines	  has	tab	  
+"	 l	ongtext01"	"mi		d2"	s	tt	uuu	vvvv
+		"							"	"							"		
+R1C1	R1C2	R1C3	R1C4	R1C5	R1C6
+ ===	- next -	 line	  is	multibyte	 value 
+aaあい	いろ2	ぼんさんが	へを	こいた	.！...
+g1	h22	i333	j4444	k55555	l6
+ ===	- next -	 lines	  has	linefeed+	tab  
+"		 "	"
+	"	"n	 "	"		 o333"		
+pqrst	uv	wx1	yz22		345
+					
+a1b2c3		XYZ	7777		k9
+short	longer12	x	yz		end
+					
+row15a	row15b	row15c	row15d	row15e	row15f
+1	22	333	4444	55555	666666
+alpha	beta	gamma	delta	epsilon	zeta
+					
+mix1		mix3	444		six6
+abc123		def456		ghi789	
+z		y		x	
+					
+t1	t2	t3	t4	t5	t6
+r1c1	r1c2		r1c4		r1c6
+data1	data22	data333	data4444	data55555	data6
+					
+A	B	C	D	E	F
+abc		123		XYZ	
+one1	two22	three3	four44	five5	six66
+					
+r30a	r30b	r30c	r30d	r30e	r30f
+longvalue1	mid	short	s	tt	uuu
+					
+x	y	z			end
+abcde	fghij	klmno	pqrst	uvwxy	z
+					
+cell1		cell3		cell5	
+111	2222	33333	444444	55	6
+					
+row40a	row40b	row40c	row40d	row40e	row40f
+a1	a2	a3	a4	a5	a6
+					
+mixA		mixC	DDD		FFF
+123abc	456def		789ghi		000
+					
+r45a	r45b	r45c	r45d	r45e	r45f
+alpha9		beta8		gamma7	
+					
+A1B2C3	D4E5F6	G7H8I9	J0	K1	L2
+short1		short3		short5	
+					
+r50a	r50b	r50c	r50d	r50e	r50f
+x1y2	z3		w4		v5
+					
+longertext	mid	small	s1	s22	s333
+					
+r55a	r55b	r55c	r55d	r55e	r55f
+abc	def	ghi	jkl	mno	pqr
+					
+1a	2b	3c	4d	5e	6f
+					
+row60a	row60b	row60c	row60d	row60e	row60f
+value1		value3		value5	
+					
+aa	bb	cc	dd	ee	ff
+					
+r65a	r65b	r65c	r65d	r65e	r65f
+x		y		z	
+					
+alpha01	beta02	gamma03	delta04	eps05	z6
+					
+row70a	row70b	row70c	row70d	row70e	row70f
+1		3		5	
+					
+abc1	def2	ghi3	jkl4	mno5	pqr6
+					
+r75a	r75b	r75c	r75d	r75e	r75f
+mix		mix2		mix3	
+					
+a	b	c	d	e	f
+					
+row80a	row80b	row80c	row80d	row80e	row80f
+123	234	345	456	567	678
+					
+Aaa	Bbb	Ccc	Ddd	Eee	Fff
+					
+r85a	r85b	r85c	r85d	r85e	r85f
+x1		x3		x5	
+					
+abcde12345	f1	g2	h3	i4	j5
+					
+row90a	row90b	row90c	row90d	row90e	row90f
+1a2b3c		4d5e6f		7g8h9i	
+					
+short		mid		longer	
+					
+r95a	r95b	r95c	r95d	r95e	r95f
+a1b		c2d		e3f	
+					
+end1	end2	end3	end4	end5	end6
+					
diff --git a/tests/run.sh b/tests/run.sh
index 4b82eca..4a24c27 100755
--- a/tests/run.sh
+++ b/tests/run.sh
@@ -1,5 +1,6 @@
-#!/bin/sh
-set -eu
+#!/usr/bin/env bash
+
+set -euo pipefail
 
 SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
 ROOT_DIR=$(cd "$SCRIPT_DIR/.." && pwd)
@@ -14,9 +15,21 @@ RED_BG='\033[41m'
 WHITE='\033[37m'
 RESET='\033[0m'
 
+# disable color
+if [ -n "${NO_COLOR:-}" ] || [ -n "${GITHUB_ACTIONS:-}" ]; then
+  GREEN=""
+  RED=""
+  RESET=""
+  BOLD=""
+  RED_BG=""
+  WHITE=""
+fi
+
 UPDATE=0
+FAIL_FAST=${FAIL_FAST:-0}
 
 PATTERNS=""
+
 for arg in "$@"; do
   if [ "$arg" = "--update" ]; then
     UPDATE=1
@@ -28,17 +41,17 @@ done
 FAILED_FILE=$(mktemp)
 trap 'rm -f "$FAILED_FILE"' EXIT
 
-find "$CASES_DIR" -type d -print0 |
+TOTAL=0
+
 while IFS= read -r -d '' d; do
 
-  # runner must be present 
-  if [ ! -f "$d/run.sh" ]; then
+  if [ ! -f "$d/run.sh" ] && [ ! -f "$d/run.vim" ]; then
     continue
   fi
 
   name=${d#"$CASES_DIR"/}
 
-  # If patterns are provided, only run cases that match at least one pattern
+  # --- filter ---
   if [ -n "$PATTERNS" ]; then
     matched=0
     for p in $PATTERNS; do
@@ -49,36 +62,55 @@ while IFS= read -r -d '' d; do
     [ "$matched" -eq 1 ] || continue
   fi
 
+  TOTAL=$((TOTAL+1))
+
+  if [ "$UPDATE" -eq 1 ]; then
+    if [ -f "$d/out-expected.txt" ]; then
+      continue
+    fi
+  fi
+
+  if [ -n "${GITHUB_ACTIONS:-}" ]; then
+    echo "::group::test $name"
+  fi
+
   printf "%-40s ... " "$name"
 
   if (
     cd "$d"
-    rm -f diff-*.txt gen.* stdout.txt stderr.txt out-actual
+    rm -f diff-*.txt gen.* stdout.txt stderr.txt out-actual.txt
 
-    sh run.sh > stdout.txt 2> stderr.txt
+    if [ -f run.sh ]; then
+      sh run.sh > stdout.txt 2> stderr.txt
+    else
+      NVIM_TIRENVI_DEV=1 nvim --headless -u NONE -n -S run.vim \
+        > stdout.txt 2> stderr.txt
+    fi
 
     if [ "$UPDATE" -eq 1 ]; then
-      if [ -f out-expected ]; then
-        echo "Refusing update: out-expected already exists"
+      if [ -f out-expected.txt ]; then
+        echo "Refusing update: out-expected.txt already exists"
         exit 1
       fi
-      mv out-actual out-expected
+      mv out-actual.txt out-expected.txt
       exit 0
     fi
 
-    if [ ! -f out-expected ]; then
-      echo "Missing out-expected"
+    if [ ! -f out-expected.txt ]; then
+      echo "Missing out-expected.txt"
       exit 1
     fi
 
     diff_file="diff-$name.txt"
     diff_file=$(printf '%s' "$diff_file" | tr ' /' '__')
-    if diff -u out-expected out-actual > "$diff_file"; then
-        rm "$diff_file"
+
+    if diff -u out-expected.txt out-actual.txt > "$diff_file"; then
+      rm "$diff_file"
     else
-        echo "DIFF FOUND (see $diff_file)"
-        exit 1
+      echo "DIFF FOUND (see $diff_file)"
+      exit 1
     fi
+
   ); then
     if [ "$UPDATE" -eq 1 ]; then
       printf "${GREEN}UPDATED${RESET}\n"
@@ -88,15 +120,24 @@ while IFS= read -r -d '' d; do
   else
     printf "${RED}FAIL${RESET}\n"
     echo "$name" >> "$FAILED_FILE"
+
+    if [ "$FAIL_FAST" -eq 1 ]; then
+      printf "\n${BOLD}${RED}FAIL-FAST: stopping after first failure${RESET}"
+      exit 1
+    fi
   fi
-done
+
+  if [ -n "${GITHUB_ACTIONS:-}" ]; then
+    echo "::endgroup::"
+  fi
+
+done < <(find "$CASES_DIR" -type d -print0)
 
 if [ -s "$FAILED_FILE" ]; then
-  echo
-  echo "${BOLD}${RED_BG}${WHITE} FAILED CASES ${RESET}"
-  sed 's/^/  - /' "$FAILED_FILE"
+  count=$(grep -c '^' "$FAILED_FILE")
+  printf "\n${BOLD}${RED_BG}${WHITE} FAILED CASES ($count) ${RESET}\n"
+  awk '{printf("%3d. %s\n", NR, $0)}' "$FAILED_FILE"
   exit 1
 fi
 
-echo
-echo "${BOLD}${GREEN}ALL TESTS PASSED${RESET}"
+printf "\n${BOLD}${GREEN}ALL TESTS PASSED (${TOTAL} cases)${RESET}\n"
\ No newline at end of file