make_placeholder_fun: Create a function that creates n placeholders

Description

For internal use by the placeholder_format tweak.

Usage

make_placeholder_fun(pattern)

Arguments

pattern

[character(1)] Any character, optionally followed by 1 or name. Examples: "?", "$1", ":name"

Value

[function(n)] A function with one argument n that returns a vector of length n with placeholders of the specified format. Examples: ?, ?, ?, ..., $1, $2, $3, ..., :a, :b, :c