From: David Kastrup <dak@gnu.org>
Date: Mon, 31 Dec 2012 13:11:32 +0000 (+0100)
Subject: Add property-unset regtest
X-Git-Tag: release/2.17.10-1~22
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=1928cdeeadb0a85be8693bf21fa870efa6d20693;p=lilypond.git

Add property-unset regtest
---

diff --git a/input/regression/property-unset.ly b/input/regression/property-unset.ly
new file mode 100644
index 0000000000..8268aa28cf
--- /dev/null
+++ b/input/regression/property-unset.ly
@@ -0,0 +1,34 @@
+\version "2.16.0"
+
+\header{
+
+  texidoc= "@code{\\unset} should be able to unset the
+@samp{DrumStaff}-specific @samp{clefGlyph} equally well as layout
+instruction, in a context definition, or as context modification.  All
+systems here should revert to the @samp{Score}-level violin clef."
+
+}
+
+\layout { ragged-right = ##t }
+\score {
+  \new DrumStaff {
+    \unset DrumStaff.clefGlyph
+    \mark "layout instruction"
+    c c c c
+  }
+}
+
+\score {
+  \new DrumStaff {
+    \mark "context def"
+    c c c c
+  }
+  \layout { \context { \DrumStaff \unset clefGlyph } }
+}
+
+\score {
+  \new DrumStaff \with { \unset clefGlyph } {
+    \mark "context mod"
+    c c c c
+  }
+}