Use bytes.Buffer for LineArray.Bytes

diff --git a/internal/buffer/line_array.go b/internal/buffer/line_array.go
index 3aae47ba86b7e711ae7facf76215eaf1d976324a..1452d39bb846504bdd5e5d9a58e0abb916b9902f 100644 (file)
--- a/internal/buffer/line_array.go
+++ b/internal/buffer/line_array.go
@@ -2,6 +2,7 @@ package buffer
 
 import (
        "bufio"
+       "bytes"
        "io"
        "sync"
        "unicode/utf8"
@@ -152,17 +153,19 @@ func NewLineArray(size uint64, endings FileFormat, reader io.Reader) *LineArray
 // Bytes returns the string that should be written to disk when
 // the line array is saved
 func (la *LineArray) Bytes() []byte {
-       str := make([]byte, 0, la.initsize+1000) // initsize should provide a good estimate
+       b := new(bytes.Buffer)
+       // initsize should provide a good estimate
+       b.Grow(int(la.initsize + 4096))
        for i, l := range la.lines {
-               str = append(str, l.data...)
+               b.Write(l.data)
                if i != len(la.lines)-1 {
                        if la.Endings == FFDos {
-                               str = append(str, '\r')
+                               b.WriteByte('\r')
                        }
-                       str = append(str, '\n')
+                       b.WriteByte('\n')
                }
        }
-       return str
+       return b.Bytes()
 }
 
 // newlineBelow adds a newline below the given line number