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\defineBarLine is confusing

From: Trevor Daniels
Subject: \defineBarLine is confusing
Date: Mon, 30 Dec 2013 16:44:56 -0000

The description of \defineBarLine in NR 1.2.5 does
not make it clear that the parameter called bartype
doubles as both the name of the barline being defined
and the definition of the bar line to be used in
the middle of the line (i.e. not at the beginning or
the end.)  

The Scheme code, which treats all four parameters identically
seems much clearer:

;; (define-bar-line "normal bar[-annotation]" "end of line" "start of line" 
"span bar")

e.g. (define-bar-line "||" "||" #f "||")

whereas \defineBarLine is

\defineBarLine bartype #'(end begin span)

Why not "\defineBarLine normal end start span"?


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