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buffer: Ignore already invalidated buffers in Shared() #4133

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buffer: Ignore already invalidated buffers in Shared() #4133

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3 changes: 3 additions & 0 deletions internal/buffer/buffer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -689,6 +689,9 @@ func (b *Buffer) WordAt(loc Loc) []byte {
// Shared returns if there are other buffers with the same file as this buffer
func (b *Buffer) Shared() bool {
for _, buf := range OpenBuffers {
if buf == nil {
continue
}
if buf != b && buf.SharedBuffer == b.SharedBuffer {
return true
}
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