Ignore edits that do not edit anything

history/information.go

@@ -82,6 +82,12 @@ func RecentChanges(n int) string {
 	return templates.RecentChangesHTML(entries, n)
 }
 
+// FileChanged tells you if the file has been changed.
+func FileChanged(path string) bool {
+	_, err := gitsh("diff", "--exit-code", path)
+	return err != nil
+}
+
 // Revisions returns slice of revisions for the given hypha name.
 func Revisions(hyphaName string) ([]Revision, error) {
 	var (

history/operations.go

@@ -109,6 +109,12 @@ func (hop *HistoryOp) Apply() *HistoryOp {
 	return hop
 }
 
+// Abort aborts the history operation.
+func (hop *HistoryOp) Abort() *HistoryOp {
+	gitMutex.Unlock()
+	return hop
+}
+
 // WithMsg sets what message will be used for the future commit. If user message exceeds one line, it is stripped down.
 func (hop *HistoryOp) WithMsg(userMsg string) *HistoryOp {
 	for _, ch := range userMsg {

hypha.go

@@ -88,6 +88,9 @@ func uploadHelp(hop *history.HistoryOp, hyphaName, ext string, data []byte, u *u
 		hyphae.IncrementCount()
 	}
 	*originalFullPath = fullPath
+	if hop.Type == history.TypeEditText && !history.FileChanged(fullPath) {
+		return hop.Abort()
+	}
 	return hop.WithFiles(fullPath).
 		WithUser(u).
 		Apply()