On 13-02-15 10:45 AM, Hadley Wickham wrote:
e.g.
substitute(f(x), list(f = function(x) x + 1))
# function (x)
# x + 1(x)
An extra pair of parentheses would really help:
(function(x)
x + 1)(x)
(Better indenting etc would be nice, but not necessary for correct
understand of the code)
This is a little tricky for the deparser. It sees a call to a function
which was determined by an expression. Sometimes you want parens,
sometimes you don't. For example, if getfun(y) returns a function, it's
clearer to display a call as getfun(y)(x) than (getfun(y))(x).
I'll see if I can work out which kinds of expressions need to be
parenthesized and implement it in the deparser.
Duncan
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