On 28/06/2023 1:39 a.m., Iris Simmons wrote:
Hello,
I'm trying to demonstrate the behaviour of my R package and how line
directives change that behaviour. So I've got an R chunk like this:
<<keep.source=TRUE>>=
{
#line 1 "file1.R"
fun <- function() {
pkg::fun()
}
#line 1 "file2.R"
fun()
}
@
but when it is rendered, the line directives do not appear:
{
+ fun <- function() {
+ pkg::fun()
+ }
+
+
+ fun()
+ }
I tried faking a line directive by writing it twice:
<<keep.source=TRUE>>=
{
#line 1 "file1.R"
#line 1 "file1.R"
fun <- function() {
pkg::fun()
}
#line 1 "file2.R"
#line 1 "file2.R"
fun()
}
@
but then the rendered fake line directive looks bad because it's out
by one space so if it is copy-pasted, it wouldn't actually function as
shown.
So is there an option I can set to have the line directives displayed,
or something else I can change to get it working? Thank you!
Maybe if you put a zero-width space before the fake version, instead of
a regular space? That's \u200B in Unicode; there are various other
encodings of it. Put it after the # so that it isn't a syntax error, i.e.
#\u200Bline 1 "file1.R"
or if that shows the escape, print that string and copy the actual
character into your document.
Duncan Murdoch
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