[Bug 262493] bc has bad "prompt" for input, breaking 25+ years of FreeBSD behavior

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262493

Herbert J. Skuhra <herbert@gojira.at> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |herbert@gojira.at

--- Comment #1 from Herbert J. Skuhra <herbert@gojira.at> ---
This is no longer the case on main, stable/13 and releng/13.1.

https://cgit.freebsd.org/src/commit?id=44d4804d1945435745518cd09eb8ae6ab22ecef4

% $ uname -r
13.1-STABLE
$ bc --version
bc 5.2.2
%  bc
1+2
3

Your options on releng/13.0 are:

- run bc with -P (alias?)
- rebuild world with WITHOUT_GH_BC=yes
- build bc from usr.bin/bc
- Modify usr.bin/gh-bc/Makefile and rebuild gh-bc
--- a/usr.bin/gh-bc/Makefile
+++ b/usr.bin/gh-bc/Makefile
@@ -34,7 +34,7 @@ NLSSRCDIR=    ${BCDIR}/locales
 CFLAGS+=       -DMAINEXEC=${PROGNAME}
 CFLAGS+=       -DNLSPATH=/usr/share/nls/%L/%N.cat
 CFLAGS+=       -DBC_ENABLED
-CFLAGS+=       -DBC_ENABLE_PROMPT
+CFLAGS+=       -DBC_ENABLE_PROMPT=0

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