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Groups > linux.debian.user > #224737

Re: Using .XCompose

From Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups linux.debian.user
Subject Re: Using .XCompose
Date 2020-07-13 14:00 +0200
Message-ID <As5hL-7Q0-11@gated-at.bofh.it> (permalink)
References (5 earlier) <AqWTf-6aG-3@gated-at.bofh.it> <AqWTf-6aG-1@gated-at.bofh.it> <Arjd7-4cJ-9@gated-at.bofh.it> <Arp8S-7GI-11@gated-at.bofh.it> <ArurT-2A0-3@gated-at.bofh.it>
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On Sat, Jul 11, 2020 at 08:32:34PM +0000, davidson wrote:
> '!' marks the spot of nonbreaking spaces that made it into OP's first
> report of odd behavior, upon testing the white scissors XCompose rule:
> 
>   $ grep "WHITE SCISSORS"  d-u_xcompose_2020-07-08.nbsp | tr $'\xc2\xa0' \!
>   <Multi_key> <s> <x>!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! : "✄"!!!! U2704 # WHITE SCISSORS

Note that tr does not handle multi-character sequences.  If you pass
something like

tr abc xyz

It does *not* look for "abc" sequences and convert only those sequences.
Rather, it looks at single characters.  It converts 'a' to 'x', and 'b'
to 'y', and 'c' to 'z'.

The number of characters in the first pattern is supposed to match the
number of characters in the second pattern, so that there is a 1:1
mapping.

GNU tr also does not handle multi-byte *characters* correctly (which
violates POSIX -- it's a known bug).

So, your tr command actually converts all c2 bytes into ! and all a0
bytes into ! as well.  Not *just* c2a0 pairs.

Nevertheless, this is useful as a first pass approximation to say that,
hey, there *might* be a bunch of NBSPs here, and you should take a
closer look.

NBSPs most often result when someone gets lazy and pastes a line from
a web page or from a Microsoft Word/Excel document into a Unix
terminal or X11 application, instead of pasting just the characters
they actually want.  Web pages, especially *older* web pages, often
use NBSPs for primitive formatting.

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Thread

Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-06 07:40 +0200
  Re: Using .XCompose Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-06 14:30 +0200
  Re: Using .XCompose Zenaan Harkness <zenaan@freedbms.net> - 2020-07-06 14:50 +0200
  Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-06 21:20 +0200
    Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-06 22:40 +0200
      Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-07 17:20 +0200
    Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-07 08:40 +0200
      Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-07 17:20 +0200
        Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-09 23:50 +0200
          Re: Using .XCompose [resend of xev_output_annotated.txt] davidson <davidson@freevolt.org> - 2020-07-10 03:40 +0200
          Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-10 10:50 +0200
            Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-11 10:40 +0200
              Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-11 12:30 +0200
                Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-12 17:00 +0200
                Re: Using .XCompose David Wright <deblis@lionunicorn.co.uk> - 2020-07-13 06:00 +0200
                Re: Using .XCompose Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-13 14:00 +0200
                Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-13 20:30 +0200
                Re: Using .XCompose Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-13 20:40 +0200
                Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-13 20:50 +0200
                Re: Using .XCompose David Wright <deblis@lionunicorn.co.uk> - 2020-07-13 21:50 +0200
                Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-14 05:40 +0200
                Fw: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-15 16:50 +0200
                Fw: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-15 17:10 +0200
                Fw: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-15 17:20 +0200
                Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-16 01:30 +0200
                Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-16 02:40 +0200
                Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-16 20:40 +0200
                how u mine 4 utf8 [was Re: Using .XCompose] davidson <davidson@freevolt.org> - 2020-07-18 03:20 +0200
                UTF-8 Everywhere -- Re: how u mine 4 utf8 [was Re: Using .XCompose] Zenaan Harkness <zenaan@freedbms.net> - 2020-07-18 07:40 +0200
                Re: how u mine 4 utf8 [was Re: Using .XCompose] davidson <davidson@freevolt.org> - 2020-07-18 09:20 +0200
                Re: how u mine 4 utf8 [was Re: Using .XCompose] Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-19 13:00 +0200
                Fw: how u mine 4 utf8 [was Re: Using .XCompose] Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-19 12:50 +0200
                Re: Fw: how u mine 4 utf8 [was Re: Using .XCompose] Tom Browder <tom.browder@gmail.com> - 2020-07-19 13:10 +0200
                Re: how u mine 4 utf8 [was Re: Using .XCompose] Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-19 13:50 +0200
                sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] davidson <davidson@freevolt.org> - 2020-07-18 12:10 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] Zenaan Harkness <zenaan@freedbms.net> - 2020-07-18 12:50 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] William Michels <wjm1@caa.columbia.edu> - 2020-07-18 22:00 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] Andrei POPESCU <andreimpopescu@gmail.com> - 2020-07-18 13:20 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] songbird <songbird@anthive.com> - 2020-07-18 21:00 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] <tomas@tuxteam.de> - 2020-07-18 16:00 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] mick crane <mick.crane@gmail.com> - 2020-07-18 22:40 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] <tomas@tuxteam.de> - 2020-07-18 23:10 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] mick crane <mick.crane@gmail.com> - 2020-07-18 23:30 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] <tomas@tuxteam.de> - 2020-07-19 10:40 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] mick crane <mick.crane@gmail.com> - 2020-07-20 13:20 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] David Christensen <dpchrist@holgerdanske.com> - 2020-07-19 01:50 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-19 12:50 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] David Christensen <dpchrist@holgerdanske.com> - 2020-07-19 23:30 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-19 13:40 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] William Michels <wjm1@caa.columbia.edu> - 2020-07-19 21:50 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] David Wright <deblis@lionunicorn.co.uk> - 2020-07-23 04:00 +0200
                Re: sed:awk:perl::rock:paper:chainsaw [was Re: Using .XCompose] songbird <songbird@anthive.com> - 2020-07-23 12:50 +0200
                Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-16 02:00 +0200
                Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-16 20:40 +0200
              Re: Using .XCompose David Wright <deblis@lionunicorn.co.uk> - 2020-07-11 17:00 +0200
                Tex characters Teemu Likonen <tlikonen@iki.fi> - 2020-07-11 18:20 +0200
                Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-11 22:40 +0200
                Re: Using .XCompose Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-13 14:00 +0200
                Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-16 07:50 +0200
              Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-11 18:10 +0200
              Re: Using .XCompose Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-20 15:30 +0200
              Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-20 15:30 +0200
                Re: Using .XCompose David Wright <deblis@lionunicorn.co.uk> - 2020-07-20 18:20 +0200
          Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-10 12:50 +0200
    Re: [offlist] posting style [was Re: Using .XCompose] Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-08 05:00 +0200
      Re: [offlist] posting style [was Re: Using .XCompose] Andrei POPESCU <andreimpopescu@gmail.com> - 2020-07-08 07:00 +0200
      Re: [not-so-offlist] posting style [was Re: Using .XCompose] davidson <davidson@freevolt.org> - 2020-07-08 07:10 +0200
    Re: [offlist] Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-08 05:00 +0200
      Re: [offlist] Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-08 05:20 +0200
      Re: [offlist] Re: Using .XCompose Zenaan Harkness <zenaan@freedbms.net> - 2020-07-08 05:40 +0200
        Re: [offlist] Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-08 08:00 +0200
  Re: Using .XCompose David Wright <deblis@lionunicorn.co.uk> - 2020-07-07 00:40 +0200
    tangent on man page locations [was Re: Using .XCompose] davidson <davidson@freevolt.org> - 2020-07-07 01:10 +0200
      Re: tangent on man page locations [was Re: Using .XCompose] David Wright <deblis@lionunicorn.co.uk> - 2020-07-07 03:50 +0200
    Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-07 11:50 +0200
      Re: Using .XCompose Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-07 13:40 +0200
        Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-08 16:30 +0200
      Re: Using .XCompose David Wright <deblis@lionunicorn.co.uk> - 2020-07-09 02:20 +0200
        Re: Using .XCompose Zenaan Harkness <zenaan@freedbms.net> - 2020-07-09 04:20 +0200
  Re: Using .XCompose Zenaan Harkness <zenaan@freedbms.net> - 2020-07-08 01:50 +0200
    Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-08 02:30 +0200
    Fw: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-08 05:10 +0200
    Re: Using .XCompose Ajith R <ajithramayyan@yahoo.co.in> - 2020-07-08 18:40 +0200
      Re: Using .XCompose Zenaan Harkness <zenaan@freedbms.net> - 2020-07-09 04:00 +0200
        Re: Using .XCompose Zenaan Harkness <zenaan@freedbms.net> - 2020-07-10 02:40 +0200
          Re: Using .XCompose The Wanderer <wanderer@fastmail.fm> - 2020-07-10 02:50 +0200
      Re: Using .XCompose davidson <davidson@freevolt.org> - 2020-07-10 05:00 +0200

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