git: 2a50a9de8340 - main - terminfo: add terminfo database

[Baptiste Daroussin]

On Fri, Feb 26, 2021 at 09:30:43AM -0800, Rodney W. Grimes wrote:
> > In message <202102251327.11PDR4eC083842 at gitrepo.freebsd.org>, Baptiste 
> > Daroussi
> > n writes:
> > > The branch main has been updated by bapt:
> > >
> > > URL: https://cgit.FreeBSD.org/src/commit/?id=2a50a9de8340f08bd876e9e5993332ae
> > > 14376f80
> > >
> > > commit 2a50a9de8340f08bd876e9e5993332ae14376f80
> > > Author:     Baptiste Daroussin <bapt at FreeBSD.org>
> > > AuthorDate: 2021-02-23 16:17:32 +0000
> > > Commit:     Baptiste Daroussin <bapt at FreeBSD.org>
> > > CommitDate: 2021-02-25 13:25:32 +0000
> > >
> > >     terminfo: add terminfo database
> > >     
> > >     Tested by:      manu, jbeich
> > > ---
> > >  share/Makefile          |  1 +
> > >  share/terminfo/Makefile | 34 ++++++++++++++++++++++++++++++++++
> > >  2 files changed, 35 insertions(+)
> > >
> > > diff --git a/share/Makefile b/share/Makefile
> > > index c4e12b05f7db..d6854b230ae5 100644
> > > --- a/share/Makefile
> > > +++ b/share/Makefile
> > > @@ -26,6 +26,7 @@ SUBDIR=	${_colldef} \
> > >  	${_syscons} \
> > >  	tabset \
> > >  	termcap \
> > > +	terminfo \
> > >  	${_timedef} \
> > >  	${_vt} \
> > >  	${_zoneinfo}
> > > diff --git a/share/terminfo/Makefile b/share/terminfo/Makefile
> > > new file mode 100644
> > > index 000000000000..7bb11f3fdf24
> > > --- /dev/null
> > > +++ b/share/terminfo/Makefile
> > > @@ -0,0 +1,34 @@
> > > +PACKAGE=	runtime
> > > +
> > > +.PATH: ${SRCTOP}/contrib/ncurses/misc
> > > +TINFOBUILDDIR=	${.OBJDIR}/builddir
> > > +CLEANDIRS+=	builddir
> > > +
> > > +.include <src.tools.mk>
> > > +
> > > +.if !defined(_SKIP_BUILD)
> > > +all: terminfo
> > > +.endif
> > > +META_TARGETS+=	terminfo install-terminfo
> > > +
> > > +terminfo: terminfo.src
> > > +	mkdir -p ${TINFOBUILDDIR}
> > > +	${TIC_CMD} -x -o ${TINFOBUILDDIR} ${.ALLSRC}
> > > +
> > > +.if make(*install*)
> > > +TINFOS!=	 cd ${TINFOBUILDDIR} && find * -type f | LC_ALL=C sort
> > > +TINFOSDIRS=	${TINFOS:C/(.).*/\1/g:O:u}
> > > +.endif
> > > +
> > > +beforeinstall: install-terminfo
> > > +install-terminfo:
> > > +	mkdir -p ${DESTDIR}/usr/share/terminfo
> > > +	cd ${DESTDIR}/usr/share/terminfo; mkdir -p ${TINFOSDIRS}
> > > +.for f in ${TINFOS}
> > > +	${INSTALL} ${TAG_ARGS} \
> > > +	    -o ${BINOWN} -g ${BINGRP} -m ${NOBINMODE} \
> > > +	    ${TINFOBUILDDIR}/${f} ${DESTDIR}/usr/share/terminfo/${f}
> > > +.endfor
> > > +
> > > +.include <bsd.prog.mk>
> > > +
> > >
> > 
> > I think this had some unintended consequences, a POLA violation that should 
> > be documented. Our termcap didn't support alternate screen buffers while 
> > terminfo does. Termcap did through t_te and t_ti but we didn't use them. 
> > Terminfo as delivered from the ncurses factory does supply rmcup and smcup; 
> > our fullscreen apps such as nvi and top see them and use the alternate 
> > screen buffer.
> > 
> > The use of the alternate screen buffer is one of the things I hate about 
> > Linux. After running vi or top I expect the output to remain on the screen 
> > so I can use some bit of information in my next command. We now have this 
> > behaviour too.
> 
> Oh, I so hate that mis-feature of Linux, please please tell me there is
> a simple knob to turn this off?  I believe LESS also does this kind
> of stuff, or atleast "man" on linux does, and that pees me off to no
> end when I quit the man page and what I wanted is no longer on the screen.
> 
> 
No this is not and I clear have 0 intention to have a complex patch on top of
the linux terminfo which would prefer easy sync in the futur.

We can document how to use a definition which does not have the feature you do
not like.

Best,
Bapt
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