Use of angle brackets around file names for include statements about ion HOT 2 CLOSED

Our internal standard is to use angle brackets only for system includes. So thanks for the offer, but it's fine as is. See also:
https://google.github.io/styleguide/cppguide.html#Names_and_Order_of_Includes

from ion.

I suggest to reconsider the consequences of the following wording from the section "16.2 Source file inclusion" in the standard specification for the programming language "C++".

…
The named source file is searched for in an implementation-defined manner. If this search is not supported, or if the search fails, the directive is reprocessed as if it read

#include <h-char-sequence> new-line
…

• How do you think about to avoid "a duplicated file search" here?
• Would you like to restrict the searched directories for header files of your software?

from ion.