[myank] Fix insertZerothMeasure and allow line yank for anacruses

[WolfgangDrescher]

Closes #83

[WolfgangDrescher]

Currently it is not possible to myank with -l option, if a kern file does not have any measure numbers (e.g. https://github.com/craigsapp/bach-370-chorales/blob/94734465d7e71857a9233d04f3431c72c461ef0e/kern/chor087.krn)

myank -I -l 22-39 will throw Error: There are no measure numbers present in the data although it is not important for a myank with the lines option enables whether there are measure numbers or not.

My current approach to this is to change in Tool_myank::insertZerothMeasure:

if (stopline < 0 && !getBoolean("lines")) {

and in Tool_myank::expandMeasureOutList

if (maxmeasure <= 0 && !getBoolean("lines")) {

But it's not working yet…

[craigsapp]

What is the status of this PR? I see "But it's not working yet…", so I should be ignoring it for now? :-)

[WolfgangDrescher]

It's actually another problem than the one I fixed in this PR. Should have opened another issue or PR. However, I managed to find a way to fix the problem with myank -l when there are no measure numbers encoded.

If in Tool_myank::getMeasureStartStop the measurelist vector does not have any elements and the -l option is used, it will add a measure to measurelist with the whole kern data where start is 0 and stop is dataend.

It's ready for review now.

[WolfgangDrescher]

Is there anything I need to change in this PR? From my side, it's ready to merge.