Pasting repeat bar over barline corrupts measures

• Jul 3, 2010 - 23:15
Type
Functional
Severity
S2 - Critical
Status
closed
Project
MuseScore

Steps to reproduce bug
1. Open "repeat bar over barline.mscz" (attached below)
2. Shift+drag to select measures 1-4
3. Edit > Copy
4. Click to select the quarter rest in measure 5, beat 3
5. Edit > Paste
6. File > Save
7. File > Reload
8. Add a note to replace one of the measure repeats. Notice that the measure is now corrupt (contains more beats than are allowed)

Expected behavior: Since the repeat bar crosses a barline when pasting, MuseScore should swap out the repeat bar for the intended notes in step 5 (see "Capture.PNG" below)

Actual behavior: After step 5 you get some odd-looking measures (see "Capture2.PNG" below)

MuseScore version: r. 3254 nightly build. Bug also present in 0.9.6 stable.

(Operating System: Windows 7)

Attachment Size
repeat bar over barline.mscz 1.48 KB
Capture.PNG 10.2 KB
Capture2.PNG 9.72 KB

Comments

• Jul 4, 2010 - 15:14

Question about the expected behaviour :
What if several staves are copied and only one contains repeat bar sign?
What if the repeat bar sign is at the beginning of a longer measure?

Reply

• Jul 5, 2010 - 00:41

lasconic and I discussed his questions from comment #1 (above) on IRC. Here is a summary of the discussion:

"What if several staves are copied and only one contains repeat bar sign?"

Lasconic thought I was recommending to skip the repeat bar symbol and go on to the notes of the next measure which would mean the two staves were now out of sync. What I meant to recommend was replacing the repeat bar symbol with the notes from the previous measure since the repeat bar can't cross a bar line.

"What if the repeat bar sign is at the beginning of a longer measure?"

This is a variation of the situation in the original bug report. For example pasting a 4/4 repeat bar into a 3/4 measure. I would recommend replacing the notes similar to the original report.

These are probably all edge-case scenarios. A quick check of Finale and Sibelius shows that neither of them handle these situations very well (see "Finale.PNG" and "Sibelius.PNG"). The only part of this bug report I consider critical is the measure corruption.

Attachment Size
Finale.PNG 300.91 KB
Sibelius.PNG 39.91 KB

Reply

• Nov 27, 2014 - 10:34

Unfortunately, we can't easily copy the actual "meaning" of the repeat measure since it's not in the clipboard. We would need to modify drastically the way a repeat measure is copied to do that by copying both the repeat measure and its meaning.
For the time being, if the repeat measure is copied on a barline, it will be copied as rest.

Reply