Bug 786 – Label modified when deleting audio adjoining a label

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Audacity 3.0.3 development began 19th April 2021

Audacity Bugzilla

Bug 786 - Label modified when deleting audio adjoining a label


Summary:	Label modified when deleting audio adjoining a label

Status:	RESOLVED FIXED

Product:	Audacity
Classification:	Unclassified
Component:	Labels
Version:	2.0.7
Hardware:	Per OS All

Importance:	P3 Repeatable
Assigned To:	Default Assignee for New Bugs

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Keywords:

Depends on:
Blocks:
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Reported:	2014-11-14 05:46 UTC by Peter Sampson
Modified:	2018-08-20 11:45 UTC (History)
CC List:	7 users (show)

See Also:
Steps To Reproduce:	1) In Interface Preferences, set "Retain labels if selection snaps to label edge" 2) Add a label track, click in it and type something to create a point label 3) Select one second to the immediate left of the label snapping to the label 4) Delete or Cut 5) Label is extended to a range label of duration one second that has the same region that was deleted or cut
Release Note:	GROUP: Label Tracks * '''If "Retain labels if selection snaps to label edge" is enabled''' in Interface Preferences, deleting or cutting a region to left of a label extends the label by the length of the selection that was removed (instead of moving the label back as intended). '''Workaround:''' For point labels that were extended to a range label, click in the label, right-click and "Delete Label", LEFT arrow then retype the label name.
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Group:	---
Workaround:
Closed:	2018-08-20 00:00:00

Flags:	stevethefiddle: Regression+

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Description Peter Sampson 2014-11-14 05:46:05 UTC

There is a bug when deleting audio adjacent to a label. Only occurs when the audio is to the left of a label. Occurs with both point and range labels.

The label is extended by the amount of audio that is deleted.
1) A point label is extended to a range label with the length of the deleted audio.
2) A region label is extended by the length of the deleted audio.

Steve confirms that this occurs on Linux too

Comment 1 Peter Sampson 2014-11-14 05:47:45 UTC

For a point label this can be a serious problem, as it is nigh on impossible to turn a region label back into a point one, (and also nigh on impossible to see whether a label is a very short range label or a point label).  And that can trash a user's Export Multiple with hard to diagnose results.

Comment 2 Gale Andrews 2014-11-17 07:12:26 UTC

Regression on 2.0.6. Occurs on Mac too. Doesn't depend on there being an audio track.

> nigh on impossible to see whether a label is a very short range label
> or a point label
Ed has a patch to display point and region labels in the Label Track Info if we want that (+1). Meantime, clicking in the label will display two arrows rather than one in the Timeline if it is a region label.

Comment 3 Leland Lucius 2014-12-04 03:02:34 UTC

Committed a fix:

https://code.google.com/p/audacity/source/detail?r=13689

Comment 4 Gale Andrews 2015-03-11 14:12:54 UTC

Thanks, Leland. Seems good - problem fixed and pre-existing behaviour still works AFAICT.