Re: Getting PSQL in Windows to support TAB/Autocomplete via modified readline...

Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2022-11-21 10:58:06 -0500, Tom Lane wrote:
>> It'd certainly be nice if we could use Readline on Windows.

> 2) The last time I checked, msvc couldn't preprocess tab-complete.c with
> USE_READLINE defined, due to running into some preprocessor limits. We can
> probably fix that on our end somehow.

Huh ... do you recall the details? Large as tab-complete is, it's
far smaller than gram.y:

$ ll src/bin/psql/tab-complete.*
-rw-rw-r--. 1 postgres postgres 227042 Nov 19 19:37 src/bin/psql/tab-complete.c
-rw-rw-r--. 1 postgres postgres 347 Apr 11 2022 src/bin/psql/tab-complete.h
-rw-rw-r--. 1 postgres postgres 838792 Nov 23 10:02 src/bin/psql/tab-complete.o
$ size src/bin/psql/tab-complete.o
text data bss dec hex filename
148550 0 128 148678 244c6 src/bin/psql/tab-complete.o
$ ll src/backend/parser/gram.*
-rw-rw-r--. 1 postgres postgres 2506806 Nov 21 10:35 src/backend/parser/gram.c
-rw-rw-r--. 1 postgres postgres 12861 Nov 21 10:35 src/backend/parser/gram.h
-rw-rw-r--. 1 postgres postgres 2183184 Nov 23 10:02 src/backend/parser/gram.o
-rw-rw-r--. 1 postgres postgres 476700 Nov 21 10:34 src/backend/parser/gram.y
$ size src/backend/parser/gram.o
text data bss dec hex filename
620127 0 0 620127 9765f src/backend/parser/gram.o

So I'm having a hard time guessing why we'd hit compiler limits
in tab-complete if we can build the rest of the system.

regards, tom lane