#4687 Let \etc in partial markup commands stand for any arguments

[David Kastrup]

Let \etc in partial markup commands stand for any arguments

Previously, \etc could only stand for a final markup argument. Now an
arbitrary kind and number of arguments from the last markup command in
a markup command chain may be omitted.

Example:

quarter-markup = \markup \note-by-number #2 \etc

\markup { 3/8: \quarter #1 #UP }

Also contains commit:

Let partial-markup regtest show more complex omissions

http://codereview.appspot.com/280330043

[Anonymous]

Passes make, make check and a full make doc.

[Anonymous]

Patch on countdown for December 16th.

[Anonymous]

Patch counted down - please push.

[David Kastrup]

Pushed to staging as
commit 31059902570b531abd4cb21fc78ee2b5cc9395e7
Author: David Kastrup dak@gnu.org
Date: Wed Dec 9 21:40:27 2015 +0100

Issue 4687/2: Let partial-markup regtest show more complex omissions

commit 70eaa17f47486111dc6a7a88aacbe1944514261b
Author: David Kastrup dak@gnu.org
Date: Wed Dec 9 21:33:00 2015 +0100

Issue 4687/1: Let \etc in partial markup commands stand for any arguments

Previously, \etc could only stand for a final markup argument.  Now an
arbitrary kind and number of arguments from the last markup command in
a markup command chain may be omitted.

Example:

quarter-markup = \markup \note-by-number #2 \etc

\markup { 3/8: \quarter #1 #UP }