8b3e2c622a
There was a pg_isblank() function that claimed to be a replacement for the standard isblank() function, which was thought to be "not very portable yet". We can now assume that it's portable (it's in C99). But pg_isblank() actually diverged from the standard isblank() by also accepting '\r', while the standard one only accepts space and tab. This was added to support parsing pg_hba.conf under Windows. But the hba parsing code now works completely differently and already handles line endings before we get to pg_isblank(). The other user of pg_isblank() is for ident protocol message parsing, which also handles '\r' separately. So this behavior is now obsolete and confusing. To improve clarity, I separated those concerns. The ident parsing now gets its own function that hardcodes the whitespace characters mentioned by the relevant RFC. pg_isblank() is now static in hba.c and is a wrapper around the standard isblank(), with some extra logic to ensure robust treatment of non-ASCII characters. Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://www.postgresql.org/message-id/flat/170308e6-a7a3-4484-87b2-f960bb564afa%40eisentraut.org
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.