GNU bug report logs - #37363
emacs and other programs do not display special characters

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Package: guix; Reported by: quiliro@HIDDEN; dated Mon, 9 Sep 2019 23:28:01 UTC; Maintainer for guix is bug-guix@HIDDEN.

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Date: Mon, 21 Oct 2019 19:52:57 +0200
From: Miguel Arruga Vivas <rosen644835@HIDDEN>
To: "37363" <37363 <at> debbugs.gnu.org>, quiliro@HIDDEN
Subject: Re: bug#37363: emacs and other programs do not display special
 characters
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I'm running on guix and spanish symbols work properly, on emacs and the
terminal.

---
miguel@unfall ~/src/gnu/guix$ locale
LANG=es_ES.utf8
LC_CTYPE="es_ES.utf8"
LC_NUMERIC="es_ES.utf8"
LC_TIME="es_ES.utf8"
LC_COLLATE="es_ES.utf8"
LC_MONETARY="es_ES.utf8"
LC_MESSAGES="es_ES.utf8"
LC_PAPER="es_ES.utf8"
LC_NAME="es_ES.utf8"
LC_ADDRESS="es_ES.utf8"
LC_TELEPHONE="es_ES.utf8"
LC_MEASUREMENT="es_ES.utf8"
LC_IDENTIFICATION="es_ES.utf8"
LC_ALL=
---

I've seen some es_EC localizations instead of es_ES, could
you check that's not your issue?

Best regards,
Miguel




Information forwarded to bug-guix@HIDDEN:
bug#37363; Package guix. Full text available.

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Date: Wed, 11 Sep 2019 10:32:27 -0500
Subject: Re: bug#37363: emacs and other programs do not display special
 characters
From: quiliro@HIDDEN
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 Content preview:  El Mar, 10 de Septiembre de 2019, 11:40 am, Ricardo Wurmus
    escribió: > > quiliro@HIDDEN writes: > >> Also with (locale "es_ES.utf8"),
    the system is all in English and Gnome >> Terminal will not s [...] 
 
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El Mar, 10 de Septiembre de 2019, 11:40 am, Ricardo Wurmus escribió:
>
> quiliro@HIDDEN writes:
>
>> Also with (locale "es_ES.utf8"), the system is all in English and Gnome
>> Terminal will not start:
>> quiliro@GSD3 ~$ gnome-terminal
>> # Locale not supported by C library.
>> # 	Using the fallback 'C' locale.
>
> Do you have “glibc-locales” installed?
> Is GUIX_LOCPATH set?

Not on my user. Probably on my system. I did not know I had to add those
on Guix System. Should I?





Information forwarded to bug-guix@HIDDEN:
bug#37363; Package guix. Full text available.

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From: Bengt Richter <bokr@HIDDEN>
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Subject: Re: bug#37363: emacs and other programs do not display special
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On +2019-09-09 19:13:08 -0500, quiliro@HIDDEN wrote:
> As per nckx's question on IRC, this is the output to locale on both Emacs
> shell and BASh:
> 
> quiliro@GSD3 ~/magit/prueba0$ locale
> LANG=es_EC.UTF-8
> LC_CTYPE="es_EC.UTF-8"
> LC_NUMERIC="es_EC.UTF-8"
> LC_TIME="es_EC.UTF-8"
> LC_COLLATE="es_EC.UTF-8"
> LC_MONETARY="es_EC.UTF-8"
> LC_MESSAGES="es_EC.UTF-8"
> LC_PAPER="es_EC.UTF-8"
> LC_NAME="es_EC.UTF-8"
> LC_ADDRESS="es_EC.UTF-8"
> LC_TELEPHONE="es_EC.UTF-8"
> LC_MEASUREMENT="es_EC.UTF-8"
> LC_IDENTIFICATION="es_EC.UTF-8"
> LC_ALL=
> 
> 
Hi,
I have been having locale-related problems too,
so maybe we can bounce enough clues around that
we can advance a little.

[ later ... I'll have to come back to locale per se,
  but hope the following is useful for poking around
  with fonts and unicode character and their glyphs ]

[ To the advanced, please don't be insulted by my posting
  obvious stuff, as if you didn't know how to use grep and sed
  and especially guix better than my examples show --
  it is motivated by wanting to exchange helpful methods and info
  with others also coming to guix, who might benefit from my recent
  newbie experiences trying to find my way into guix city, in the
  Commonwealth of FOSS :)

  Hm, I wonder if we could use postgresql plus postgis to do
  an openstreetmap map of guix city stores and pubs
  -- and potholes and contruction blockages ;-)
]
  
Anyway, I have a little script which may be helpful
in generating utf8 characters for display in your
various contexts (what this (emacs) context is I'll show below):

$ uchr 229 10
å
$ which -a uchr
/home/bokr/bin/uchr
$ cat ~/bin/uchr
#!/home/bokr/.guix-profile/bin/bash
# 2019-08-19 22:25:34 ## was: #!/usr/bin/bash
# ~/bin/uchr -- print unicode characters from numeric args
# uchr 65 67 10 | od -a -t x1
# 0000000   A   C  nl
#          41  43  0a
# 0000003
cc="$( printf '\\u%x' "$@" )"
echo -en "$cc"

Those last two lines do all the work ;-)
(printf is a bash built-in -- type -"help printf"
at the bash command line.

(By -"foo" I mean "foo" minus the quotes :)

printf re-uses its format for each arg it encounters, so it
converts all the integers according to '\\u%x' above in uchr.

$ uchr {192..255} 10
ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ
$
What do you get if you try that from your login console, not gnome?

To make various fonts available to the console, you should be
able to use setfont from console bash -- see -"man setfont"
(remembering my minus-the-quotes notation :)

The {FIRST_INTEGER..LAST_INTEGER} of course generates individual
integer arguments including first and last. The 10 is a newline.

I'm pretty sure I did -"setfont sun12x22" from the console bash,
which gives you most of the 12x22 font built into the kernel.

It's got 256 character cells for its 12x22 pixel glyphs, each
represented by 22 16-bit integers using the ms12 bits with 1
as foreground, IIRC.

The sun12x22 font is pretty good, with box-drawing characters
as well most things you need in European languages (I'm familiar
with it because I wrote a little script to display the glyphs
on the frame buffer, in the pursuit of independence from huge
blobs of gooey GUI software :)

After having done -"setfont sun12x22" you can do
-"setfont -ou glyph-code-to-unicodepoint.txt" which will
give you a tab-delimited table starting ... ending like:

0x00	U+0000
0x20	U+0020
0x21	U+0021
0x22	U+0022
0x23	U+0023
0x24	U+0024
0x25	U+0025
...
0xdf	U+2580
0xdc	U+2584
0xdb	U+2588
0xdd	U+258c
0xde	U+2590
0xb0	U+2591
0xb1	U+2592
0xb2	U+2593
0x01	U+263a
0x5f	U+f804

(BTW, this would be really easy to snarf and convert to
an assoc list mapping unicode code points to glyph indices)

That glyph 0x01 has a unicode we can discover, even though
the console font you get from -"setfont sun12x22" does not
have the glyph that is in the kernel version's glyph table:

$ 
$ unicode-info "$(uchr 0x263a)"

"☺":
    glyph  codepoint .....int  name...
    _☺_     +U00263a     9786  WHITE SMILING FACE  
$ 

The glyph is in the kernel's 256-glyph bit-map for
sun12x22 though, and it should be visible in a gui browser
with good unicode coverage.

You can find the kernel's bitfont defined in kernel sources
.../linux-4.14.3/lib/fonts/font_sun12x22.c (or change
the kernel version -- 4.14.3 is the last one I grop^H^Hepped around in
looking for stuff to "steal" :)

Ok, back to
$ uchr {192..255} 10
ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ
$

The first four A's above are really not As, as another little script
of mine that shows unicode information will show:

(you can find the source archived in a recent post of mine
    https://lists.gnu.org/archive/html/guix-devel/2019-09/msg00115.html
if curious)

$ uchr {192..202} | unicode-info

"ÀÁÂÃÄÅÆÇÈÉÊ":
    glyph  codepoint .....int  name...
    _À_     +U0000c0      192  LATIN CAPITAL LETTER A WITH GRAVE  
    _Á_     +U0000c1      193  LATIN CAPITAL LETTER A WITH ACUTE  
    _Â_     +U0000c2      194  LATIN CAPITAL LETTER A WITH CIRCUMFLEX  
    _Ã_     +U0000c3      195  LATIN CAPITAL LETTER A WITH TILDE  
    _Ä_     +U0000c4      196  LATIN CAPITAL LETTER A WITH DIAERESIS  
    _Å_     +U0000c5      197  LATIN CAPITAL LETTER A WITH RING ABOVE  
    _Æ_     +U0000c6      198  LATIN CAPITAL LETTER AE  
    _Ç_     +U0000c7      199  LATIN CAPITAL LETTER C WITH CEDILLA  
    _È_     +U0000c8      200  LATIN CAPITAL LETTER E WITH GRAVE  
    _É_     +U0000c9      201  LATIN CAPITAL LETTER E WITH ACUTE  
    _Ê_     +U0000ca      202  LATIN CAPITAL LETTER E WITH CIRCUMFLEX  
$ 

The above is copy/pasted from a shell window I got by -"M-x shell"
To show the pid genealogy of that shell context, I'll -"C-x o"
over there and output about the context and paste it back here:

$ 
$ # typing pidgeny (for pid genealogy :) we get:
$ pidgeny
pidgeny         pts/0    23549 S+   /home/bokr/.guix-profile/bin/bash /home/bokr
bash            pts/0    16231 Ss   /home/bokr/.guix-profile/bin/bash --noeditin
.emacs-26.3-rea tty1     16204 Sl+  /gnu/store/ki85c221k56y6hnp7qyx42q2qmra4w4s-
mutt            tty1      1118 S    mutt
bash            tty1       537 Ss   -bash
login           ?          521 Ss   login -- bokr
systemd         ?            1 Ss   /sbin/init \EFI\PhantoNv4ArchGx\vmlinuz-linu
$ which pidgeny|xargs realpath
/home/bokr/bin/pidgeny
$ ## --- pidgeny ---
$ which pidgeny|xargs cat
#!/home/bokr/.guix-profile/bin/bash
# 2019-08-19 07:16:38 -- was: #!/usr/bin/bash
# ~/bin/pidgeny

pid=${1:-$$}	#this process if no pid specified as $1

while [ $(($pid)) -gt 0 ]; do    
      ps h -p $pid -o comm,tt,pid,stat,args
      pid=$(ps -q $pid -o ppid=)
done
$ ## hm, monkeyed with that hashbang too, need a better idea :)
$ 
$ ## pidgeny output doesn't show full path on mutt 1118,bash 537,
$ ## or login 521, but we can get them easily:
$ realpath /proc/1118/exe
/gnu/store/bsd34k2v78mi0wxk85rz32xaminls9nb-mutt-1.12.1/bin/mutt
$ ## that was a guix version
$ realpath /proc/537/exe
/usr/bin/bash
$ ## that was the inital shell of the "foreign distro" -- in my case:
$ uname -a
Linux PhantoNv4ArchGx 5.2.9-arch1-1-ARCH #1 SMP PREEMPT Fri Aug 16 11:29:43 UTC 2019 x86_64 GNU/Linux
$ realpath /proc/521/exe
realpath: /proc/521/exe: Permission denied
$ ## need permission
$ su -c 'realpath /proc/521/exe'
/usr/bin/login
$ ## also built by the foreign distro's building tool chain
  and libraries -- I guess I will feel better
$ ## when I replace the foreigner with linux-libre ;-)
$ 

Well, HTH you to probe the state of your system vis-a-vis
utf8, glyphs, fonts etc.

I'll come back with some locale mystery, which will probably
wind up being something I thought I did but didn't ;-/

But now I need to go do some things IRL ;-)

Regards,
Bengt Richter




Information forwarded to bug-guix@HIDDEN:
bug#37363; Package guix. Full text available.

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User-agent: mu4e 1.2.0; emacs 26.2
From: Ricardo Wurmus <rekado@HIDDEN>
To: quiliro@HIDDEN
Subject: Re: bug#37363: emacs and other programs do not display special
 characters
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quiliro@HIDDEN writes:

> Also with (locale "es_ES.utf8"), the system is all in English and Gnome
> Terminal will not start:
> quiliro@GSD3 ~$ gnome-terminal
> # Locale not supported by C library.
> # 	Using the fallback 'C' locale.

Do you have =E2=80=9Cglibc-locales=E2=80=9D installed?
Is GUIX_LOCPATH set?

--=20
Ricardo





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bug#37363; Package guix. Full text available.

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Subject: Re: bug#37363: emacs and other programs do not display special
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On M-x shell with (locale "es_ES.utf8"):
quiliro@GSD3 ~$ ñ
bash: $'quiliro@GSD3 ~$ ñ
bash: $'\361': command not found\361': command not found
quiliro@GSD3 ~$

Also with (locale "es_ES.utf8"), the system is all in English and Gnome
Terminal will not start:
quiliro@GSD3 ~$ gnome-terminal
# Locale not supported by C library.
# 	Using the fallback 'C' locale.
# Error constructing proxy for
org.gnome.Terminal:/org/gnome/Terminal/Factory0: Error calling
StartServiceByName for org.gnome.Terminal:
GDBus.Error:org.freedesktop.DBus.Error.Spawn.ChildExited: Process
org.gnome.Terminal exited with status 9
quiliro@GSD3 ~$

I have also tested unknown command error output. On Emacs' M-x shell with
(locale "es_EC.UTF-8"):
quiliro@GSD3 ~$ ñ
bash: $'\361': no se encontró la orden
quiliro@GSD3 ~$

On BASh with (locale "es_EC.UTF-8"):
quiliro@GSD3 ~$ ñ
bash: ñ: no se encontró la orden
quiliro@GSD3 ~$

I have tested this with:
guix (GNU Guix) 1d03a9198db6f3656a34d62eb89e5f7d5a99e76a
and with:
guix (GNU Guix) 83aa6562173e06e8fafd4857a2e708feabfe56f8





Information forwarded to bug-guix@HIDDEN:
bug#37363; Package guix. Full text available.

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Date: Mon, 9 Sep 2019 19:13:08 -0500
Subject: Re: bug#37363: emacs and other programs do not display special
 characters
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As per nckx's question on IRC, this is the output to locale on both Emacs
shell and BASh:

quiliro@GSD3 ~/magit/prueba0$ locale
LANG=es_EC.UTF-8
LC_CTYPE="es_EC.UTF-8"
LC_NUMERIC="es_EC.UTF-8"
LC_TIME="es_EC.UTF-8"
LC_COLLATE="es_EC.UTF-8"
LC_MONETARY="es_EC.UTF-8"
LC_MESSAGES="es_EC.UTF-8"
LC_PAPER="es_EC.UTF-8"
LC_NAME="es_EC.UTF-8"
LC_ADDRESS="es_EC.UTF-8"
LC_TELEPHONE="es_EC.UTF-8"
LC_MEASUREMENT="es_EC.UTF-8"
LC_IDENTIFICATION="es_EC.UTF-8"
LC_ALL=






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bug#37363; Package guix. Full text available.

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Hello Guix:

I am reporting this because there are no other similar cases on the
mailing list and because I think this might be a bug and not my error.

Emacs Magit and Emacs shell don't dispaly special characters (such as =C3=
=B1,
=C3=AD, =C3=B3) on their output. It is strange because a command that inc=
ludes a
special character is displayed. But a special character from the output
will not be displayed correcly. Those special characters are displayed
correctly on afairs such as opening a file with those characters.

With 'emacs -Q' I did not have that problem. When copying .emacs.d to
another directory, setting that directory as HOME and running emacs with
'mkdir ~/temp', 'cp ~/.emacs.d ~/temp/' and 'HOME=3D"~/temp" emacs', it
would not use my configurations. But it would not have the problem with
Emacs shell. Emacs Magit would not be available either. The same situatio=
n
is with 'emacs -Q' as with 'HOME=3D"~/temp" emacs'.


Sample from BASh displaye correctly:

quiliro@GSD3 ~/magit/prueba0$ git log
commit 0904ec46cb737d2116d59b0b7c4f0c21a74feb70 (HEAD -> master)
Author: quiliro <quiliro+commits@HIDDEN>
Date:   Sun Sep 8 15:43:09 2019 -0500

    Modificaci=C3=B3n remota

commit 5024f6d525b1b61cd2691aaaa60dde07ae6f489f (origin/master)
Author: ramiro.ordonez <quiliro+fablab@HIDDEN>
Date:   Sun Sep 8 13:20:11 2019 -0500

    A=C3=B1ad=C3=AD a mi amor
quiliro@GSD3 ~/magit/prueba0$


Same command sample from Emacs shell displayed incorrectly:

quiliro@GSD3 ~/magit/prueba0$ git log
WARNING: terminal is not fully functional
-  (press RETURN)
commit 0904ec46cb737d2116d59b0b7c4f0c21a74feb70 (HEAD -> master)
Author: quiliro <quiliro+commits@HIDDEN>
Date:   Sun Sep 8 15:43:09 2019 -0500

    Modificaci=C3=83=C2=B3n remota

commit 5024f6d525b1b61cd2691aaaa60dde07ae6f489f (origin/master)
Author: ramiro.ordonez <quiliro+fablab@HIDDEN>
Date:   Sun Sep 8 13:20:11 2019 -0500

    A=C3=83=C2=B1ad=C3=83=C2=AD a mi amor
quiliro@GSD3 ~/magit/prueba0$


I am not sure if this is related that in Icecat I sometimes see square
boxes with numbers inside them in place of characters. But other special
characters are displayed. That is probably a missing font. It could be a
separate problem.


Happy hacking!





Acknowledgement sent to quiliro@HIDDEN:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#37363; Package guix. Full text available.
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