.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,29 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: bug
+assignees: MakeNowJust
+---
+
+## Describe the bug
+
+A clear and concise description of what the bug is.
+
+## To Reproduce
+
+**Code**:
+
+```go
+// Minimal code for reproduce the bug
+```
+
+**Expected**:
+
+**Actual**:
+
+## Environment
+
+- OS: [e.g. Windows, macOS, Linux]
+- Go: [e.g. 1.12.9]
+- Version: [e.g. 1.0.0]

README.md

@@ -15,7 +15,6 @@ $ go get github.com/MakeNowJust/heredoc
 ## Import
 
 ```go
-// usual
 import "github.com/MakeNowJust/heredoc"
 ```
 
@@ -26,6 +25,7 @@ package main
 
 import (
 	"fmt"
+
 	"github.com/MakeNowJust/heredoc"
 )
 

example_test.go

@@ -48,7 +48,7 @@ func ExampleDoc_spec() {
 func ExampleDocf() {
 	libName := "github.com/MakeNowJust/heredoc"
 	author := "TSUYUSATO Kitsune (@MakeNowJust)"
-	fmt.Printf(heredoc.Docf(`
+	fmt.Print(heredoc.Docf(`
 		Library Name  : %s
 		Author        : %s
 		Repository URL: http://%s.git

heredoc.go

@@ -32,7 +32,6 @@ package heredoc
 import (
 	"fmt"
 	"strings"
-	"unicode"
 )
 
 const maxInt = int(^uint(0) >> 1)
@@ -54,6 +53,20 @@ func Doc(raw string) string {
 	return strings.Join(lines, "\n")
 }
 
+// isSpace checks whether the rune represents space or not.
+// Only white spcaes (U+0020) and horizontal tabs are treated as space character.
+// It is the same as Go.
+//
+// See https://github.com/MakeNowJust/heredoc/issues/6#issuecomment-524231625.
+func isSpace(r rune) bool {
+	switch r {
+	case ' ', '\t':
+		return true
+	default:
+		return false
+	}
+}
+
 // getMinIndent calculates the minimum indentation in lines, excluding empty lines.
 func getMinIndent(lines []string, skipFirstLine bool) int {
 	minIndentSize := maxInt
@@ -64,9 +77,9 @@ func getMinIndent(lines []string, skipFirstLine bool) int {
 		}
 
 		indentSize := 0
-		for _, r := range []rune(line) {
-			if unicode.IsSpace(r) {
-				indentSize += 1
+		for _, r := range line {
+			if isSpace(r) {
+				indentSize++
 			} else {
 				break
 			}

heredoc_test.go

@@ -39,6 +39,7 @@ var tests = []testCase{
 		Foo
 		Bar
 	`, "Foo\nBar\n"},
+	{"\n\u3000zenkaku space", "\u3000zenkaku space"},
 }
 
 func TestDoc(t *testing.T) {