cpp_source reports error with temp file path

[renkun-ken]

cpp11::cpp_source() by default uses a temp directory to store the source files to compile. When an error occurs, however, the errors are also reported with a temp path like the following:

> cpp11::cpp_source("indention.cpp")                                                                                                                                                   
/tmp/RtmptYYXie/file3b9a74895bd2a/src/indention.cpp:6:47: error: ‘x’ was not declared in this scope
    6 | SEXP detect_comments(SEXP content, SEXP row = x)
      |                                               ^
make: *** [/usr/lib/R/etc/Makeconf:177: /tmp/RtmptYYXie/file3b9a74895bd2a/src/indention.o] Error 1
make: *** Waiting for unfinished jobs....
Error: Compilation failed.
Backtrace:
1: stop("Compilation failed.", call. = FALSE)
2: cpp11::cpp_source("indention.cpp")

where these files are immediately removed. If a code editor (e.g. VS Code) supports detecting file links in the terminal output, user could not jump to the line and column from these paths as they don't exist anymore.

I guess it might make more sense to show the original file paths in the error output.