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bounds check on moveleft

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This commit is contained in:
Felix Angell 2018-06-09 10:36:45 +01:00
parent 02dc3753ac
commit 2c0775ad55
1 changed files with 5 additions and 3 deletions
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8
gui/buffer.go
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@ -627,13 +627,15 @@ func (b *Buffer) deleteBeforeCursor() {
func (b *Buffer) moveLeft() {
if b.curs.x == 0 && b.curs.y > 0 {
b.curs.move(b.table.Lines[b.curs.y-1].Len(), -1)
} else if b.curs.x > 0 {
str := b.table.Lines[b.curs.y].String()
inBounds := (b.curs.x-1 >= 0 && b.curs.x-1 < len(str))
charWidth := 1
str := b.table.Lines[b.curs.y].String()[b.curs.x-1]
if str == '\t' {
if inBounds && str[b.curs.x-1] == '\t' {
charWidth = 4
}
b.curs.moveRender(-1, 0, -charWidth, 0)
}
}