all: get the copyright year from git history

If the line that match with pattern on match-copyright does not contains
year, or there is no match, try to get the year from the first commit of
the file using "git log --follow ..." command.

If no commit history or its not using git, use default copyright year from
configuration.

16 files changed, 131 insertions, 67 deletions

diff --git a/README.md b/README.md
index 0c48c70..b000448 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ Features,
   regex
 - Customizable pattern for searching and capturing existing copyright year,
   author, and contact through regex
+- Derive the copyright year from the first commit in git history.
 
 ## Background
 
@@ -210,7 +211,13 @@ The match-copyright section define the pattern to match with old copyright
 text.
 The regex must contains named group to capture copyright year, author, and
 contact.
-For example, given the following old copyright text,
+
+If no copyright year found on the file, program will derive the year from
+the date of the first commit in history of the file using the Source Code
+Management (SCM).
+In git SCM, it will run "git log --follow file".
+
+Example, given the following old copyright text,
 
 ```
 Copyright 2022, John Doe <john.doe@email>. All rights reserved.
@@ -258,7 +265,7 @@ path              = { unicode_char }
 license_id        = "default" | "exist" | "match"
 idx_license_id    = 1 * decimal_digit
 
-year              = "unknown" | 4 * decimal_digit
+year              = 4 * decimal_digit ("," year)
                   | 4 * decimal_digit "-" 4*decimal_digit
 
 copyright_id      = "default" | "exist" | "match"
@@ -285,8 +292,8 @@ found at the bottom.
 The `year` column define the copyright year for the work.
 The value is either,
 
-- unknown - program cannot detect year
 - YYYY - single year, for example 2026
+- YYYY,YYYY,... - list of year, separated by comma
 - YYYY-YYYY - range of years, for example 2000-2026
 
 The `copyright_id` define the author and contact.
diff --git a/config.go b/config.go
index dfa1f5f..9ee9679 100644
--- a/config.go
+++ b/config.go
@@ -54,16 +54,16 @@ prefix = "%"
 pattern = "^.*\\.(apk|app|bz2|csv|doc|docx|exe|gif|gz|jpeg|jpg|json|pdf|png|ppt|pptx|svg|svgz|tar|tgz|xls|xlsx|zip)$"
 
 [match-license]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*(.*)governed by a BSD-style(.*)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*(.*)governed by a BSD-style(.*)$"
 license_identifier = BSD-3-Clause
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
-delete_line_after = "^(//+|#+|/\\*+|<!--+)?\\s*license that can(.*)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|/\\*+|<!--+|--+)?\\s*license that can(.*)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
 
 [match-copyright]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
 `
 
 type config struct {
diff --git a/file.go b/file.go
index 742290d..11d2154 100644
--- a/file.go
+++ b/file.go
@@ -6,11 +6,14 @@ package spdxconv
 import (
 	"bytes"
 	"fmt"
+	"log"
 	"os"
 	"path/filepath"
 	"regexp"
 	"slices"
+	"strconv"
 	"strings"
+	"time"
 
 	libos "git.sr.ht/~shulhan/pakakeh.go/lib/os"
 )
@@ -20,17 +23,16 @@ const (
 	valDefault = `default` // Use the default value from configuration.
 	valExist   = `exist`   // The license/copyright exist in the file.
 	valMatch   = `match`   // One of the pattern in match-xxx found in file.
-	valUnknown = `unknown`
 )
 
 // REUSE-IgnoreStart
 
 // reLicenseID regex to detect SPDX license identifier with or without
 // comment prefix.
-var reLicenseID = regexp.MustCompile(`^(//+|#+|/\*+|<!--+)?\s?SPDX-License-Identifier:\s*(.*)\s*$`)
+var reLicenseID = regexp.MustCompile(`^(//+|#+|/\*+|<!--+|--+)?\s?SPDX-License-Identifier:\s*(.*)\s*$`)
 
 // reCopyrightText regex to detect SPDX copyright text.
-var reCopyrightText = regexp.MustCompile(`^(//+|#+|/\*+|<!--+)?\s?SPDX-FileCopyrightText:\s*(.*)\s*$`)
+var reCopyrightText = regexp.MustCompile(`^(//+|#+|/\*+|<!--+|--+)?\s?SPDX-FileCopyrightText:\s*(.*)\s*$`)
 
 // REUSE-IgnoreEnd
 
@@ -41,8 +43,6 @@ type file struct {
 	path string
 
 	// commentPrefix used as prefix to SPDX identifier.
-	// The comment prefix is detected automatically from the first N
-	// lines of file.
 	commentPrefix string
 	commentSuffix string
 
@@ -77,11 +77,8 @@ func newFile(path string, maxLine int) (f *file, err error) {
 	}
 
 	f = &file{
-		path:          path,
-		licenseID:     valDefault,
-		copyrightYear: valUnknown,
-		copyrightText: valDefault,
-		isBinary:      libos.IsBinaryStream(content),
+		path:     path,
+		isBinary: libos.IsBinaryStream(content),
 	}
 	if f.isBinary {
 		return f, nil
@@ -125,6 +122,7 @@ func (f *file) scan(conv *SPDXConv) {
 	}
 	f.scanLicenseID(conv)
 	f.scanCopyrightText(conv)
+	f.getYearFromSCM(conv)
 }
 
 // detectComment get comment prefix and suffix using the "match-file-comment"
@@ -149,6 +147,7 @@ func (f *file) detectComment(cfg *config) {
 }
 
 func (f *file) scanLicenseID(conv *SPDXConv) {
+	f.licenseID = valDefault
 	for _, cml := range conv.cfg.MatchLicense {
 		for x, line := range f.topLines {
 			if reLicenseID.Match(line) {
@@ -175,10 +174,10 @@ func (f *file) scanLicenseID(conv *SPDXConv) {
 			}
 		}
 	}
-	f.licenseID = valDefault
 }
 
 func (f *file) scanCopyrightText(conv *SPDXConv) {
+	f.copyrightText = valDefault
 	for _, cmc := range conv.cfg.MatchCopyright {
 		for x, line := range f.topLines {
 			if reCopyrightText.Match(line) {
@@ -207,7 +206,45 @@ func (f *file) scanCopyrightText(conv *SPDXConv) {
 			}
 		}
 	}
-	f.copyrightText = valDefault
+}
+
+func (f *file) getYearFromSCM(conv *SPDXConv) {
+	if f.copyrightText == valExist {
+		// SPDX for copyright exist, skip it. Even though maybe there
+		// is no year.
+		return
+	}
+	if f.copyrightYear != `` {
+		return
+	}
+	var logp = `getYearFromSCM`
+
+	f.copyrightYear = conv.cfg.CopyrightYear
+
+	logs, err := conv.scm.LogFollow(f.path, ``)
+	if err != nil {
+		log.Printf(`%s %s: %s`, logp, f.path, err)
+		return
+	}
+	if len(logs) == 0 {
+		log.Printf(`%s %s: empty commit history`, logp, f.path)
+		return
+	}
+
+	first_commit := logs[len(logs)-1]
+	fields := strings.Split(first_commit, `,`)
+	if len(fields) < 2 {
+		log.Printf(`%s %s: cannot parse commit log %q`, logp, f.path, first_commit)
+		return
+	}
+
+	sec, err := strconv.ParseInt(fields[1], 10, 64)
+	if err != nil {
+		log.Printf(`%s %s: cannot parse commit timestamp: %s`, logp, f.path, err)
+		return
+	}
+
+	f.copyrightYear = strconv.Itoa(time.Unix(sec, 0).Year())
 }
 
 // apply the SPDX identifier to file.
@@ -242,9 +279,6 @@ func (f *file) apply(conv *SPDXConv) (err error) {
 	}
 	f.topLines = slices.Insert(f.topLines, f.idxLicenseID, rawline)
 
-	if f.copyrightYear == valUnknown {
-		f.copyrightYear = conv.cfg.CopyrightYear
-	}
 	if f.copyrightYear != `` {
 		f.copyrightYear += ` `
 	}
diff --git a/go.mod b/go.mod
index 43555f2..fdcb4b9 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ module git.sr.ht/~shulhan/spdxconv
 
 go 1.24.0
 
-require git.sr.ht/~shulhan/pakakeh.go v0.60.3-0.20260111142917-cdfebe3f55dc
+require git.sr.ht/~shulhan/pakakeh.go v0.60.3-0.20260113140641-d18ec5d8635b
 
 require (
 	golang.org/x/exp v0.0.0-20251219203646-944ab1f22d93 // indirect
diff --git a/go.sum b/go.sum
index 7b10687..8de41cb 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,5 @@
-git.sr.ht/~shulhan/pakakeh.go v0.60.3-0.20260111142917-cdfebe3f55dc h1:9oi3sLX/kyePdZyCVmx0qoIAmcPy63v8U1D3Br23gLc=
-git.sr.ht/~shulhan/pakakeh.go v0.60.3-0.20260111142917-cdfebe3f55dc/go.mod h1:1MkKXbLZRHTcnheeSEbRpGztkym4Yxzh90ep+jCxbDc=
+git.sr.ht/~shulhan/pakakeh.go v0.60.3-0.20260113140641-d18ec5d8635b h1:tPRWSIjzQTWoQJ4WG2zJFP1GybZuvpkniKjjJc4gvJ8=
+git.sr.ht/~shulhan/pakakeh.go v0.60.3-0.20260113140641-d18ec5d8635b/go.mod h1:1MkKXbLZRHTcnheeSEbRpGztkym4Yxzh90ep+jCxbDc=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
 github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
 golang.org/x/exp v0.0.0-20251219203646-944ab1f22d93 h1:fQsdNF2N+/YewlRZiricy4P1iimyPKZ/xwniHj8Q2a0=
diff --git a/report_test.go b/report_test.go
index db43739..2b31436 100644
--- a/report_test.go
+++ b/report_test.go
@@ -21,7 +21,6 @@ func TestLoadReport(t *testing.T) {
 		listRegular: []*file{{
 			path:          `fileR1`,
 			licenseID:     valDefault,
-			copyrightYear: valUnknown,
 			copyrightText: valDefault,
 			commentPrefix: `# `,
 		}, {
@@ -45,14 +44,12 @@ func TestLoadReport(t *testing.T) {
 		listBinary: []*file{{
 			path:          `fileB1`,
 			licenseID:     valDefault,
-			copyrightYear: valUnknown,
 			copyrightText: valDefault,
 			isBinary:      true,
 		}},
 		listUnknown: []*file{{
 			path:          `fileU1`,
 			licenseID:     valDefault,
-			copyrightYear: valUnknown,
 			copyrightText: valDefault,
 			isUnknown:     true,
 		}},
diff --git a/scm.go b/scm.go
index 7e193b8..ac708d0 100644
--- a/scm.go
+++ b/scm.go
@@ -6,12 +6,20 @@ package spdxconv
 // sourceCodeManagement define the interface for SCM tools.
 type sourceCodeManagement interface {
 	IsIgnored(path string) bool
+	LogFollow(path, format string) ([]string, error)
 }
 
 // noSCM is a type to indicate working directory without SCM.
 // It always return false on IsIgnored.
-type noSCM struct{}
+type noSCM struct {
+}
+
+var defaultNoSCM = &noSCM{}
 
 func (scm *noSCM) IsIgnored(path string) bool {
 	return false
 }
+
+func (scm *noSCM) LogFollow(path, format string) ([]string, error) {
+	return nil, nil
+}
diff --git a/spdxconv.go b/spdxconv.go
index f3da9c1..466b0ee 100644
--- a/spdxconv.go
+++ b/spdxconv.go
@@ -246,7 +246,7 @@ func (conv *SPDXConv) scanForSCM(dir, curDir string) (err error) {
 		return nil
 	}
 
-	conv.scm = &noSCM{}
+	conv.scm = defaultNoSCM
 	return nil
 }
 
diff --git a/spdxconv_test.go b/spdxconv_test.go
index 11a2a72..842102c 100644
--- a/spdxconv_test.go
+++ b/spdxconv_test.go
@@ -64,23 +64,23 @@ func TestInit(t *testing.T) {
 			Pattern: `^.*\.(apk|app|bz2|csv|doc|docx|exe|gif|gz|jpeg|jpg|json|pdf|png|ppt|pptx|svg|svgz|tar|tgz|xls|xlsx|zip)$`,
 		}},
 		MatchLicense: []*matchLicense{{
-			Pattern:           `^(//+|#+|/\*+|<!--+)?\s*(.*)governed by a BSD-style(.*)$`,
+			Pattern:           `^(//+|#+|/\*+|<!--+|--+)?\s*(.*)governed by a BSD-style(.*)$`,
 			LicenseIdentifier: `BSD-3-Clause`,
 			DeleteLineBefore: []string{
-				`^(//+|#+|/\*+|<!--+)$`,
+				`^(//+|#+|/\*+|<!--+|--+)$`,
 			},
 			DeleteLineAfter: []string{
-				`^(//+|#+|/\*+|<!--+)?\s*license that can(.*)$`,
-				`^(//+|#+|\*+/|--+>)$`,
+				`^(//+|#+|/\*+|<!--+|--+)?\s*license that can(.*)$`,
+				`^(//+|#+|\*+/|--+>|--+)$`,
 			},
 		}},
 		MatchCopyright: []*matchCopyright{{
-			Pattern: `^(//+|#+|/\*+|<!--+)?\s*Copyright\s+(?<year>\d{4}),?\s+(?<author>.*)\s+<(?<contact>.*)>.*$`,
+			Pattern: `^(//+|#+|/\*+|<!--+|--+)?\s*Copyright\s+(?<year>\d{4}),?\s+(?<author>.*)\s+<(?<contact>.*)>.*$`,
 			DeleteLineBefore: []string{
-				`^(//+|#+|/\*+|<!--+)$`,
+				`^(//+|#+|/\*+|<!--+|--+)$`,
 			},
 			DeleteLineAfter: []string{
-				`^(//+|#+|\*+/|--+>)$`,
+				`^(//+|#+|\*+/|--+>|--+)$`,
 			},
 		}},
 	}
@@ -132,9 +132,11 @@ func TestScan(t *testing.T) {
 //spdxconv:version:v1
 //spdxconv:header:path,license_id,idx_license_id,year,copyright_id,idx_copyright_id
 //spdxconv:regular
+no_copyright_year.md,match,2,2026,default,0,<!-- ," -->"
 test.go,match,1,2022,match,0,// ,
 test.html,match,4,2022,match,1,<!-- ," -->"
-test.sh,match,1,2022,match,0,# ,
+test.sh,default,0,2026,default,0,# ,
+test.sql,match,1,2022,match,0,-- ,
 //spdxconv:binary
 //spdxconv:unknown`
 
@@ -295,9 +297,11 @@ func TestSPDXConv_scanDir(t *testing.T) {
 		exp: []string{
 			`.gitignore`,
 			`a/b/.gitignore`,
+			`no_copyright_year.md`,
 			`test.go`,
 			`test.html`,
 			`test.sh`,
+			`test.sql`,
 			`with_spdx.go`,
 		},
 	}, {
diff --git a/testdata/Apply_test.txt b/testdata/Apply_test.txt
index 8107ee8..a8c3e6d 100644
--- a/testdata/Apply_test.txt
+++ b/testdata/Apply_test.txt
@@ -48,14 +48,16 @@ prefix = "%"
 pattern = "^.*\\.(apk|app|bz2|csv|doc|docx|exe|gif|gz|jpeg|jpg|json|pdf|png|ppt|pptx|svg|svgz|tar|tgz|xls|xlsx|zip)$"
 
 [match-license]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*(.*)governed by a BSD-style(.*)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*(.*)governed by a BSD-style(.*)$"
 license_identifier = BSD-3-Clause
-delete_line_after = "^(//+|#+|/\\*+|<!--+)?\\s*license that can(.*)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|/\\*+|<!--+|--+)?\\s*license that can(.*)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
 
 [match-copyright]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
 
 >>> without_spdx_license_id.go
 1
diff --git a/testdata/loadConfig/config_exists/spdxconv.cfg b/testdata/loadConfig/config_exists/spdxconv.cfg
index 1f7ff68..b92f0c8 100644
--- a/testdata/loadConfig/config_exists/spdxconv.cfg
+++ b/testdata/loadConfig/config_exists/spdxconv.cfg
@@ -43,13 +43,13 @@ prefix = "%"
 pattern = "^.*\\.(apk|app|bz2|csv|doc|docx|exe|gif|gz|jpeg|jpg|json|pdf|png|ppt|pptx|svg|svgz|tar|tgz|xls|xlsx|zip)$"
 
 [match-license]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*(.*)governed by a BSD-style(.*)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*(.*)governed by a BSD-style(.*)$"
 license_identifier = BSD-3-Clause
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
-delete_line_after = "^(//+|#+|/\\*+|<!--+)?\\s*license that can(.*)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|/\\*+|<!--+|--+)?\\s*license that can(.*)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
 
 [match-copyright]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
diff --git a/testdata/loadReport/ok/spdxconv.report b/testdata/loadReport/ok/spdxconv.report
index ef027b8..cfb222d 100644
--- a/testdata/loadReport/ok/spdxconv.report
+++ b/testdata/loadReport/ok/spdxconv.report
@@ -3,14 +3,14 @@
 
 // comment
 //spdxconv:regular
-fileR1,default,0,unknown,default,0,# ,
+fileR1,default,0,,default,0,# ,
 file R2,exist,1,2024,exist,-1,// ,
 fileR3,match,-2,2000-2026,match,-3,<!-- ," -->"
 //spdxconv:binary
 	 
-fileB1,default,0,unknown,default,0,,
+fileB1,default,0,,default,0,,
 
 // comment
 //spdxconv:unknown
 // comment
-fileU1,default,0,unknown,default,0,,
+fileU1,default,0,,default,0,,
diff --git a/testdata/scan/no_copyright_year.md b/testdata/scan/no_copyright_year.md
new file mode 100644
index 0000000..be47d2e
--- /dev/null
+++ b/testdata/scan/no_copyright_year.md
@@ -0,0 +1,7 @@
+<!--
+Copyright Shulhan <ms@kilabit.info>. All rights reserved.
+Use of this source code is governed by a BSD-style
+license that can be found in the LICENSE file.
+-->
+
+The copyrightYear will use the default one.
diff --git a/testdata/scan/spdxconv.cfg b/testdata/scan/spdxconv.cfg
index 1cdfefb..082d482 100644
--- a/testdata/scan/spdxconv.cfg
+++ b/testdata/scan/spdxconv.cfg
@@ -3,7 +3,7 @@
 
 [default]
 license_identifier = GPL-3.0-only
-copyright_year = 2026
+copyright_year = 2025
 file_copyright_text = Author <contact@email.local>
 max_line_match = 10
 
@@ -48,13 +48,13 @@ pattern = "^.*\\.(apk|app|bz2|csv|doc|docx|exe|gif|gz|jpeg|jpg|json|pdf|png|ppt|
 pattern = "^.*\\.(apk|app|bz2|csv|doc|docx|exe|gif|gz|jpeg|jpg|json|pdf|png|ppt|pptx|svg|svgz|tar|tgz|xls|xlsx|zip)$"
 
 [match-license]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*(.*)governed by a BSD-style(.*)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*(.*)governed by a BSD-style(.*)$"
 license_identifier = BSD-3-Clause
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
-delete_line_after = "^(//+|#+|/\\*+|<!--+)?\\s*license that can(.*)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|/\\*+|<!--+|--+)?\\s*license that can(.*)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
 
 [match-copyright]
-pattern = "^(//+|#+|/\\*+|<!--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
-delete_line_before = "^(//+|#+|/\\*+|<!--+)$"
-delete_line_after = "^(//+|#+|\\*+/|--+>)$"
+pattern = "^(//+|#+|/\\*+|<!--+|--+)?\\s*Copyright\\s+(?<year>\\d{4}),?\\s+(?<author>.*)\\s+<(?<contact>.*)>.*$"
+delete_line_before = "^(//+|#+|/\\*+|<!--+|--+)$"
+delete_line_after = "^(//+|#+|\\*+/|--+>|--+)$"
diff --git a/testdata/scan/test.sh b/testdata/scan/test.sh
index 8fd6949..13b4657 100644
--- a/testdata/scan/test.sh
+++ b/testdata/scan/test.sh
@@ -1,3 +1,3 @@
-# Copyright 2022, Shulhan <ms@kilabit.info>. All rights reserved.
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file.
\ No newline at end of file
+#!/bin/sh
+
+# Test getYearFromSCM.
diff --git a/testdata/scan/test.sql b/testdata/scan/test.sql
new file mode 100644
index 0000000..86d55b3
--- /dev/null
+++ b/testdata/scan/test.sql
@@ -0,0 +1,5 @@
+-- Copyright 2022, Shulhan <ms@kilabit.info>. All rights reserved.
+-- Use of this source code is governed by a BSD-style
+-- license that can be found in the LICENSE file.
+
+-- comment