CVS commit: src/lib/libedit

["Robert Elz" <kre%netbsd.org@localhost>]

Module Name:    src
Committed By:   kre
Date:           Tue Dec 16 02:40:48 UTC 2025

Modified Files:
        src/lib/libedit: editline.3 el.c el.h histedit.h terminal.c vi.c

Log Message:
[Prereq for PR bin/58609] Add EL_GETENV to libedit

When interacting with the shell, and perhaps other applications,
editline needs to obtain the values of some environment variables.

Normally getenv(3) does that - but that doesn't work when being
used in sh(1) as getenv() simply accesses the environment as it
was when sh(1) was invoked - after that, in sh anyway, that
environment is simply abandoned (well, kind of) - but certainly
no changes made by the shell will be reflected there.

To allow editline to obtain current values of environment
variables, add a new el_set()/el_get() "op" parameter value,
which can be used to instruct editline which function to use
for the purpose.   That is EL_GETENV.

This is part of a (long pending, awaiting testing) fix for
PR bin/58609 - but I'm getting tired of having it sitting uncommitted
in my source tree - and I think this part is self contained,
and simple enough, to simply commit.


To generate a diff of this commit:
cvs rdiff -u -r1.103 -r1.104 src/lib/libedit/editline.3 src/lib/libedit/el.c
cvs rdiff -u -r1.48 -r1.49 src/lib/libedit/el.h
cvs rdiff -u -r1.63 -r1.64 src/lib/libedit/histedit.h
cvs rdiff -u -r1.46 -r1.47 src/lib/libedit/terminal.c
cvs rdiff -u -r1.65 -r1.66 src/lib/libedit/vi.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.