f00a4f02ac
The hard-wired PageOutput arguments in usage() and sibling functions have been a perennial maintenance gotcha, and there's no reason to think we'll ever get any better about that. Let's get rid of those magic constants by constructing the output in a buffer where we can count the newlines before calling PageOutput. (Perhaps this is microscopically slower; but none of these functions are performance critical, and anyway we might well be buying back all the cost by avoiding having to pass most of the data through snprintf.c. I could not detect any speed difference in a desultory check.) This also gets rid of the need to assume that platform-specific variations in the output are insignificant. While at it, make the code shorter and more abstract by inventing helper macros HELP0() and HELPN() to encapsulate the specific output actions being invoked. Discussion: https://postgr.es/m/365160.1654289490@sss.pgh.pa.us
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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.