GNU logs - #36983, boring messages


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Subject: bug#36983: 27.0.50; ansi-term gets disturbed with unicode characters
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This screen recording may show what is happening:
https://gnu.support/files/tmp/2019-08-09-11:23:11.ogv

When there is unicode character, there can be error, it seems as it
will not refresh nicely.



In GNU Emacs 27.0.50 (build 3, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2019-08-04 built on protected.rcdrun.com
Repository revision: 01661f33c11654d1fe5fe1013332db2500b7f449
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Hyperbola GNU/Linux-libre

Recent messages:
No new activity

Configured using:
 'configure --prefix=/package/text/emacs-2019-08-04 --with-modules
 --without-gpm --with-x-toolkit=lucid'

Configured features:
XAW3D XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GSETTINGS GLIB NOTIFY
INOTIFY ACL GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS LUCID X11 XDBE XIM MODULES THREADS JSON PDUMPER
LCMS2 GMP

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Features:
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hib-social hib-debbugs hsys-org hactypes hui-mini hui hui-mouse
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hui-menu hyrolo-menu hyrolo bbdb bbdb-site timezone hmail hui-jmenu
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hycontrol pcase hsettings hui-em-but hbut hact hpath hhist hbdata htz
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org-install tex-site gh-common marshal eieio-compat advice info cl
package easymenu browse-url url-handlers url-parse auth-source cl-seq
eieio eieio-core cl-macs eieio-loaddefs password-cache json subr-x map
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cl-lib tooltip eldoc electric uniquify ediff-hook vc-hooks
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dnd fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode elisp-mode lisp-mode prog-mode register page menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core term/tty-colors frame cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite charscript
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macroexp files text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote
threads dbusbind inotify lcms2 dynamic-setting system-font-setting
font-render-setting x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 3978433 527109)
 (symbols 48 82115 28)
 (strings 32 597071 124175)
 (string-bytes 1 27067353)
 (vectors 16 153407)
 (vector-slots 8 2955684 450016)
 (floats 8 1462 1880)
 (intervals 56 373667 3545)
 (buffers 992 626))


-- 
Thanks,
Jean Louis




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To: Jean Louis <bugs@HIDDEN>
Subject: bug#36983: Acknowledgement (27.0.50; ansi-term gets disturbed
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Jean Louis <bugs@HIDDEN> writes:

> This screen recording may show what is happening:
> https://gnu.support/files/tmp/2019-08-09-11:23:11.ogv
>
> When there is unicode character, there can be error, it seems as it
> will not refresh nicely.

Do you get the same problem if you call 'cat file' in ansi-term, where
'file' contains those characters?




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* Noam Postavsky <npostavs@HIDDEN> [2019-08-09 14:09]:
> Jean Louis <bugs@HIDDEN> writes:
> 
> > This screen recording may show what is happening:
> > https://gnu.support/files/tmp/2019-08-09-11:23:11.ogv
> >
> > When there is unicode character, there can be error, it seems as it
> > will not refresh nicely.
> 
> Do you get the same problem if you call 'cat file' in ansi-term, where
> 'file' contains those characters?

If I use elinks, lynx, mutt, and view any page with Unicode characters
I get the problem




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Jean Louis <bugs@HIDDEN> writes:

> * Noam Postavsky <npostavs@HIDDEN> [2019-08-09 14:09]:
>> Jean Louis <bugs@HIDDEN> writes:
>> 
>> > This screen recording may show what is happening:
>> > https://gnu.support/files/tmp/2019-08-09-11:23:11.ogv
>> >
>> > When there is unicode character, there can be error, it seems as it
>> > will not refresh nicely.
>> 
>> Do you get the same problem if you call 'cat file' in ansi-term, where
>> 'file' contains those characters?
>
> If I use elinks, lynx, mutt, and view any page with Unicode characters
> I get the problem

Since you mentioned Turkish, I looked at
https://tr.wikipedia.org/wiki/Anasayfa in lynx under ansi-term; it seems
okay.  Could you please provide a specific example that doesn't require
access to your email account?





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* Noam Postavsky <npostavs@HIDDEN> [2019-08-09 15:10]:
> Jean Louis <bugs@HIDDEN> writes:
> 
> > * Noam Postavsky <npostavs@HIDDEN> [2019-08-09 14:09]:
> >> Jean Louis <bugs@HIDDEN> writes:
> >> 
> >> > This screen recording may show what is happening:
> >> > https://gnu.support/files/tmp/2019-08-09-11:23:11.ogv
> >> >
> >> > When there is unicode character, there can be error, it seems as it
> >> > will not refresh nicely.
> >> 
> >> Do you get the same problem if you call 'cat file' in ansi-term, where
> >> 'file' contains those characters?
> >
> > If I use elinks, lynx, mutt, and view any page with Unicode characters
> > I get the problem
> 
> Since you mentioned Turkish, I looked at
> https://tr.wikipedia.org/wiki/Anasayfa in lynx under ansi-term; it seems
> okay.  Could you please provide a specific example that doesn't require
> access to your email account?

There is one Unicode character, it is not Turkish, rather in Turkish
subject, there was some not visible Unicode character. It was not
visible in Emacs, as font did not support it. This could be reason.

I have put same character in the subject of this email, maybe you will
see it then.

Another example is using elinks in ansi-term with the page:
https://unicode-table.com/en/sets/arrows-symbols/

Jean




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* Jean Louis <bugs@HIDDEN> [2019-08-09 15:41]:
> I have put same character in the subject of this email, maybe you will
> see it then.

I have now checked it again, there is one Unicode character in subject
of this email, and it is disturbing ansi-term. I think it should not
disturb it.

Maybe solution is complex, maybe simple. I don't know. Is it complex?

I hope it could be solved as that I can integrate the mutt
better. Thanks for helping.

Jean




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From: Jean Louis <bugs@HIDDEN>
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Today I have started testing this:
https://github.com/akermu/emacs-libvterm

and it works nice so far in my Emacs development version. The feeling
is about the same as with ansi-term

But I would like that ansi-term can handle unicode characters without
disturbance.

Jean




Message sent to bug-gnu-emacs@HIDDEN:


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Subject: bug#36983: 27.0.50; ansi-term gets disturbed with unicode characters =?UTF-8?Q?=F0=9F=90=91?=
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From: Noam Postavsky <npostavs@HIDDEN>
References: <courier.000000005D4D5D96.00004043@HIDDEN>
 <87ftmar16n.fsf@HIDDEN> <20190809125421.GA19074@HIDDEN>
 <87blwyqyc7.fsf@HIDDEN> <20190809134139.GA20606@HIDDEN>
Date: Sun, 18 Aug 2019 22:19:44 -0400
In-Reply-To: <20190809134139.GA20606@HIDDEN> (Jean Louis's
 message of "Fri, 9 Aug 2019 15:41:40 +0200")
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--=-=-=
Content-Type: text/plain

# Emacs 25 is the earliest I have building right now.
found 36983 25.3
tags 36983 + confirmed
quit

Jean Louis <bugs@HIDDEN> writes:

> Another example is using elinks in ansi-term with the page:
> https://unicode-table.com/en/sets/arrows-symbols/

I'm able to reproduce the problem with lynx visiting that page.  And
with the attached reduction based on that example.


--=-=-=
Content-Type: text/html
Content-Disposition: attachment;
 filename=bug-36983-fancy-char-term-align.html
Content-Description: reduced example

<html>
  <body>
    <li>
      <div>&#10224;</div>
      <div>
        <div><a href="/en/27F0/">Upwards Quadruple Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F0</span>
        <span>&amp;#10224;</span>
      </div>
    </li>
    <li>
      <div>&#10225;</div>
      <div>
        <div><a href="/en/27F1/">Downwards Quadruple Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F1</span>
        <span>&amp;#10225;</span>
      </div>
    </li>
    <li>
      <div>&#10228;</div>
      <div>
        <div><a href="/en/27F4/">Right Arrow with Circled Plus</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F4</span>
        <span>&amp;#10228;</span>
      </div>
    </li>
    <li>
      <div>&#10229;</div>
      <div>
        <div><a href="/en/27F5/">Long Leftwards Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F5</span>
        <span>&amp;#10229;</span>
      </div>
    </li>
    <li>
      <div>&#10230;</div>
      <div>
        <div><a href="/en/27F6/">Long Rightwards Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F6</span>
        <span>&amp;#10230;</span>
      </div>
    </li>
    <li>
      <div>&#10231;</div>
      <div>
        <div><a href="/en/27F7/">Long Left Right Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F7</span>
        <span>&amp;#10231;</span>
      </div>
    </li>
    <li>
      <div>&#10232;</div>
      <div>
        <div><a href="/en/27F8/">Long Leftwards Double Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F8</span>
        <span>&amp;#10232;</span>
      </div>
    </li>
    <li>
      <div>&#10233;</div>
      <div>
        <div><a href="/en/27F9/">Long Rightwards Double Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F9</span>
        <span>&amp;#10233;</span>
      </div>
    </li>
  </body>
</html>

--=-=-=--




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From: Noam Postavsky <npostavs@HIDDEN>
To: Jean Louis <bugs@HIDDEN>
Subject: Re: bug#36983: 27.0.50; ansi-term gets disturbed with unicode
 characters =?utf-8?Q?=F0=9F=90=91?=
References: <courier.000000005D4D5D96.00004043@HIDDEN>
 <87ftmar16n.fsf@HIDDEN> <20190809125421.GA19074@HIDDEN>
 <87blwyqyc7.fsf@HIDDEN> <20190809134139.GA20606@HIDDEN>
Date: Sun, 18 Aug 2019 22:19:44 -0400
In-Reply-To: <20190809134139.GA20606@HIDDEN> (Jean Louis's
 message of "Fri, 9 Aug 2019 15:41:40 +0200")
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--=-=-=
Content-Type: text/plain

# Emacs 25 is the earliest I have building right now.
found 36983 25.3
tags 36983 + confirmed
quit

Jean Louis <bugs@HIDDEN> writes:

> Another example is using elinks in ansi-term with the page:
> https://unicode-table.com/en/sets/arrows-symbols/

I'm able to reproduce the problem with lynx visiting that page.  And
with the attached reduction based on that example.


--=-=-=
Content-Type: text/html
Content-Disposition: attachment;
 filename=bug-36983-fancy-char-term-align.html
Content-Description: reduced example

<html>
  <body>
    <li>
      <div>&#10224;</div>
      <div>
        <div><a href="/en/27F0/">Upwards Quadruple Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F0</span>
        <span>&amp;#10224;</span>
      </div>
    </li>
    <li>
      <div>&#10225;</div>
      <div>
        <div><a href="/en/27F1/">Downwards Quadruple Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F1</span>
        <span>&amp;#10225;</span>
      </div>
    </li>
    <li>
      <div>&#10228;</div>
      <div>
        <div><a href="/en/27F4/">Right Arrow with Circled Plus</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F4</span>
        <span>&amp;#10228;</span>
      </div>
    </li>
    <li>
      <div>&#10229;</div>
      <div>
        <div><a href="/en/27F5/">Long Leftwards Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F5</span>
        <span>&amp;#10229;</span>
      </div>
    </li>
    <li>
      <div>&#10230;</div>
      <div>
        <div><a href="/en/27F6/">Long Rightwards Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F6</span>
        <span>&amp;#10230;</span>
      </div>
    </li>
    <li>
      <div>&#10231;</div>
      <div>
        <div><a href="/en/27F7/">Long Left Right Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F7</span>
        <span>&amp;#10231;</span>
      </div>
    </li>
    <li>
      <div>&#10232;</div>
      <div>
        <div><a href="/en/27F8/">Long Leftwards Double Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F8</span>
        <span>&amp;#10232;</span>
      </div>
    </li>
    <li>
      <div>&#10233;</div>
      <div>
        <div><a href="/en/27F9/">Long Rightwards Double Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F9</span>
        <span>&amp;#10233;</span>
      </div>
    </li>
  </body>
</html>

--=-=-=--




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From: Noam Postavsky <npostavs@HIDDEN>
To: Jean Louis <bugs@HIDDEN>
Subject: Re: bug#36983: 27.0.50; ansi-term gets disturbed with unicode
 characters =?utf-8?Q?=F0=9F=90=91?=
References: <courier.000000005D4D5D96.00004043@HIDDEN>
 <87ftmar16n.fsf@HIDDEN> <20190809125421.GA19074@HIDDEN>
 <87blwyqyc7.fsf@HIDDEN> <20190809134139.GA20606@HIDDEN>
Date: Sun, 18 Aug 2019 22:19:44 -0400
In-Reply-To: <20190809134139.GA20606@HIDDEN> (Jean Louis's
 message of "Fri, 9 Aug 2019 15:41:40 +0200")
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--=-=-=
Content-Type: text/plain

# Emacs 25 is the earliest I have building right now.
found 36983 25.3
tags 36983 + confirmed
quit

Jean Louis <bugs@HIDDEN> writes:

> Another example is using elinks in ansi-term with the page:
> https://unicode-table.com/en/sets/arrows-symbols/

I'm able to reproduce the problem with lynx visiting that page.  And
with the attached reduction based on that example.


--=-=-=
Content-Type: text/html
Content-Disposition: attachment;
 filename=bug-36983-fancy-char-term-align.html
Content-Description: reduced example

<html>
  <body>
    <li>
      <div>&#10224;</div>
      <div>
        <div><a href="/en/27F0/">Upwards Quadruple Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F0</span>
        <span>&amp;#10224;</span>
      </div>
    </li>
    <li>
      <div>&#10225;</div>
      <div>
        <div><a href="/en/27F1/">Downwards Quadruple Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F1</span>
        <span>&amp;#10225;</span>
      </div>
    </li>
    <li>
      <div>&#10228;</div>
      <div>
        <div><a href="/en/27F4/">Right Arrow with Circled Plus</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F4</span>
        <span>&amp;#10228;</span>
      </div>
    </li>
    <li>
      <div>&#10229;</div>
      <div>
        <div><a href="/en/27F5/">Long Leftwards Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F5</span>
        <span>&amp;#10229;</span>
      </div>
    </li>
    <li>
      <div>&#10230;</div>
      <div>
        <div><a href="/en/27F6/">Long Rightwards Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F6</span>
        <span>&amp;#10230;</span>
      </div>
    </li>
    <li>
      <div>&#10231;</div>
      <div>
        <div><a href="/en/27F7/">Long Left Right Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F7</span>
        <span>&amp;#10231;</span>
      </div>
    </li>
    <li>
      <div>&#10232;</div>
      <div>
        <div><a href="/en/27F8/">Long Leftwards Double Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F8</span>
        <span>&amp;#10232;</span>
      </div>
    </li>
    <li>
      <div>&#10233;</div>
      <div>
        <div><a href="/en/27F9/">Long Rightwards Double Arrow</a></div>
        <div><a href="/en/blocks/suplemental-arrows-a/">Supplemental Arrows-A</a></div>
        <span>U+27F9</span>
        <span>&amp;#10233;</span>
      </div>
    </li>
  </body>
</html>

--=-=-=--




Message sent to bug-gnu-emacs@HIDDEN:


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Subject: bug#36983: 27.0.50; ansi-term gets disturbed with unicode characters =?UTF-8?Q?=F0=9F=90=91?=
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From: Jean Louis <bugs@HIDDEN>
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 <20190809125421.GA19074@HIDDEN>
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I think that it is not only related to few arrows but general in
handling some wider Unicode characters.

Jean




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