applied some of the changes from #149

tools/filesystem/filesystem.go

@@ -153,7 +153,7 @@ func (s *System) DeletePrefix(prefix string) []error {
 	// (this operation usually is optional and there is no need to strictly check the result)
 	// ---
 	// fill dirs slice
-	dirs := []string{}
+	dirs := make([]string, 0, len(dirsMap))
 	for d := range dirsMap {
 		dirs = append(dirs, d)
 	}

tools/inflector/inflector.go

@@ -32,15 +32,14 @@ func Sentenize(str string) string {
 		return ""
 	}
 
-	s := []rune(str)
-	sentence := string(unicode.ToUpper(s[0])) + string(s[1:])
+	str = UcFirst(str)
 
-	lastChar := string(s[len(s)-1:])
+	lastChar := str[len(str)-1:]
 	if lastChar != "." && lastChar != "?" && lastChar != "!" {
-		return sentence + "."
+		return str + "."
 	}
 
-	return sentence
+	return str
 }
 
 // Sanitize sanitizes `str` by removing all characters satisfying `removePattern`.

tools/inflector/inflector_test.go

@@ -12,6 +12,7 @@ func TestUcFirst(t *testing.T) {
 		expected string
 	}{
 		{"", ""},
+		{" ", " "},
 		{"Test", "Test"},
 		{"test", "Test"},
 		{"test test2", "Test test2"},
@@ -55,6 +56,9 @@ func TestSentenize(t *testing.T) {
 	}{
 		{"", ""},
 		{"   ", ""},
+		{".", "."},
+		{"?", "?"},
+		{"!", "!"},
 		{"Test", "Test."},
 		{" test ", "Test."},
 		{"hello world", "Hello world."},