Re: build: bison compat: colour mess

[Steffen Nurpmeso]

P.S.:

Steffen Nurpmeso wrote in
 <20240426195426.tY4qjp12@steffen%sdaoden.eu>:
 |I come over via https://github.com/onetrueawk/awk/issues/228.
 |For years the nawk build causes terminal mess in the unshare(1)d
 |fakeroot(1) package build environment of the Linux distro i use
 |(CRUX; sh(1) based).  It looks like that:
 |
 |  ...
 |  bison -d  awkgram.y
 |  awkgram.yawkgram.y: : warning:warning:3399;49m;49m  62 shift/reduce \
 |  conflicts62 shift/reduce conflicts [ [
 |  7 reduce/reduce conflicts] [8;id=5]984;dicd7=750909046d1c67f7101050b6319\
 |  6dfb1d1050b03090d0b0d10;0h0t0t0p0s0:1/;/hwtwtwp.sg:n/u/.wowrwg./gsnouf.t\
 |  owragr/es/obfitswoanr/em/abniusaoln//hmtamnlu_a
 |  nlo/dhet/mDli_angondoes/tDiicasg.nhotsmtli#cWsc.ohntfmlli#cWtcso-nrfrl\c\
 |  -Wconflicts-rrt[-3r9r;\9-Wconflicts-rrm389;;;4\m]
 |  awkgram.y: note:note: erun with option '-Wcounterexamples' to generate \
 |  conflict counterexamples[f111d207]580;0i0d00=050919;h4ttdpcs7:/7/0w0w0w.\
 |  gnu.org/softw6a1r6ef/1b1i1sdo2n/ma0nu7a4l2/0h0t0
 |  39;49m rerun with option '-Wcounterexamples' to generate conflict \
 |  counterexamplescts-rri[o3n9/;m4a9nmu]l8/;h;t\l_no]de
 |  cc -g -Wall -pedantic -Wcast-qual   -O2   -c -o [.]
 |  ...
 |
 |From warning:warning it is purple, from note:note turquoise, then
 |purple, then .. etc.  The terminal is not properly restored,
 |i need to do "tput reset" to see the cursor again.  The screen is
 |flushed, ie cleared initially, too.
 |Note that if i do ls(1) --color=yes in the same environment,
 |colors are ok.  (However, vim(1) only starts up as rvim.)
 |
 |It is like that for years, i can reproduce it a hundred percent
 |(also see the nawk issue).  Todd Miller said in the issue that
 |bison uses some GNU specific library for these terminal sequences,
 |but i have zero idea from neither.  From a fast glance into the
 |very large bison codebase it seems quite logical (if it really is
 |that isatty(STDERR) thing).
 |I only wanted to report this issue, finally.

Ie the builder results in such a process tree:

  steffen   1399  1397   0  0.0   2456   6516 Ss   00:00:00 Aug05 pts/2     \_ 
-bash
  root     16564  1399   0  0.0   1506   3656 S    00:00:00 16:05 pts/2     |   
\_ /usr/bin/doas /usr/ports/box-ports.sh
  root     16570 16564   0  0.0    655    988 S    00:00:00 16:05 pts/2     |   
    \_ /bin/sh /usr/ports/box-ports.sh
  root     16575 16570   0  0.0    655   1404 S    00:00:00 16:05 pts/2     |   
        \_ /bin/sh /usr/ports/box-ports.sh
  root     16614 16575   0  0.0    610    904 S    00:00:00 16:05 pts/2     |   
            \_ /usr/bin/unshare --ipc --uts --pid --fork --mount --mount-proc 
--kill-child --root=/tmp/ports-yahBGr/root /init
  root     16615 16614   0  0.0    655    976 S    00:00:00 16:05 pts/2     |   
                \_ /bin/sh - /init
  root     16616 16615   0  0.0   1506   3792 S    00:00:00 16:05 pts/2     |   
                    \_ /usr/bin/doas -u ports /usr/bin/nice -n +20 /bin/bash -l
  ports    16618 16616  19  0.0   1256   4340 SN   00:00:00 16:05 pts/2     |   
                    |   \_ /bin/bash -l
  ports    16646 16618  19  0.0    655   1820 SN+  00:00:00 16:06 pts/2     |   
                    |       \_ /bin/sh /usr/bin/fakeroot pkgmk -d
  ports    16661 16646  19  0.0   2169   4760 SN+  00:00:00 16:06 pts/2     |   
                    |           \_ /bin/bash /usr/bin/pkgmk -d
  ports    16707 16661  19  0.0   2169   4120 SN+  00:00:00 16:06 pts/2     |   
                    |               \_ /bin/bash /usr/bin/pkgmk -d
  ports    16869 16707  19  0.0   7223  11544 SNl+ 00:00:00 16:06 pts/2     |   
                    |                   \_ cmake --build build
  ports    16871 16869  19  0.0   2115   5708 SN+  00:00:00 16:06 pts/2     |   
                    |                       \_ /usr/bin/ninja

Ok it is strange, but anyway it only ever happens with bison.

 --End of <20240426195426.tY4qjp12@steffen%sdaoden.eu>

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)
|
| Only during dog days:
| On the 81st anniversary of the Goebbel's Sportpalast speech
| von der Leyen gave an overlong hypocritical inauguration one.
| The brew's essence of our civilizing advancement seems o be:
|   Total war - shortest war -> Permanent war - everlasting war