5c837ddd70
Using flex's -i switch to achieve case-insensitivity is not a very safe practice, because the scanner's behavior may then depend on the locale that flex was invoked in. In the particular example at hand, that's not academic: the possible matches for "FIRST" will be different in a Turkish locale than elsewhere. Do it the hard way instead, as our other scanners do. Also, drop use of -b -CF -p, because this scanner is only used when parsing the contents of a GUC variable. That's not done often, and the amount of text to be parsed can be expected to be trivial, so prioritizing scanner speed over code size seems like quite the wrong tradeoff. Using flex's default optimization options reduces the size of syncrep_gram.o by more than 50%. The case-insensitivity problem is new in HEAD (cf commit 3901fd70c). The poor choice of optimization flags exists also in 9.6, but it doesn't seem important enough to back-patch. Discussion: https://postgr.es/m/24403.1495225931@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: http://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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.