This closes qax-os#782, fix unmerge all cells cause corrupted file

xuri · xuri · commit 3783d1d01b45 · 2021-02-10T00:04:13.000+08:00
diff --git a/merge.go b/merge.go
@@ -148,6 +148,9 @@ func (f *File) UnmergeCell(sheet string, hcell, vcell string) error {
 	}
 	ws.MergeCells.Cells = ws.MergeCells.Cells[:i]
 	ws.MergeCells.Count = len(ws.MergeCells.Cells)
+	if ws.MergeCells.Count == 0 {
+		ws.MergeCells = nil
+	}
 	return nil
 }
 

Original file line number	Diff line number	Diff line change
`@@ -148,6 +148,9 @@ func (f *File) UnmergeCell(sheet string, hcell, vcell string) error {`
`148`	`148`	`}`
`149`	`149`	`ws.MergeCells.Cells = ws.MergeCells.Cells[:i]`
`150`	`150`	`ws.MergeCells.Count = len(ws.MergeCells.Cells)`
	`151`	`+ if ws.MergeCells.Count == 0 {`
	`152`	`+ ws.MergeCells = nil`
	`153`	`+ }`
`151`	`154`	`return nil`
`152`	`155`	`}`
`153`	`156`