[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5345 Crash with specific combination of pitch and omitted note head

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First bad commit is:

commit 4f2abdb21ee6b6f2441276f8dc81507708654915
Author: Paul Morris address@hidden
Date: Sun Oct 2 15:52:14 2016 -0400

Issue 4979/1: Don't merge non-overlapping ledger lines

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[issues:#5345] Crash with specific combination of pitch and omitted note head

Status: Accepted
Created: Fri Jun 15, 2018 12:11 AM UTC by Simon Albrecht
Last Updated: Fri Jun 15, 2018 12:11 AM UTC
Owner: nobody

Reported by Lukas-Fabian Moser in this thread with the following minimal example:

WARNING: Only test with appropriate configuration of ulimit, see the e-mail exchange.

\version "2.19.80"

\new Staff <<
  {
    \clef bass
    e,4
  }
  {
    \omit NoteHead
    e,4
  }
>>

Lukas says:

Everything here (except the \version) seems to be necessary. I can reproduce the crash with some other configurations as well (another pitch in tenor clef, for instance), but removing any single command seems to resolve the problem. Also, putting each "voice" into a regular \new Voice (as in Harm's proposal) makes the problem disappear. Just as taking f, instead of e, for the pitch does (which could point to ledger lines).

David K. says the problem appears to be in the page builder.

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