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Old

[vim] avoid accidental maro recording (@q)

Posted 11-06-2021 at 07:02 AM by Michael Uplawski
Updated 11-13-2021 at 01:42 AM by Michael Uplawski

in ~/.vimrc I note
Code:
nnoremap Q q
nnoremap q <Nop>
and no longer end up in macro-recording mode, when I forget the colon before 'q'.

Copied & pasted from Stack Overflow (see there).
Senior Member
Views 52 Comments 0 Michael Uplawski is offline
Old

Unbuffered shell-input

Posted 10-16-2021 at 02:46 AM by Michael Uplawski
Updated 11-13-2021 at 01:43 AM by Michael Uplawski (Wrong title, much misunderstanding and ill-chosen search criteria.)

There are solutions on the Web.

Having read some of these, I prefer a Ruby-Oneliner readNB which returns the 1 character that the user has had a chance to enter on the keyboard, before readNB returns.

---------------------- In the meantime -------------------------
GazL has in the very first comment on this blog, below presented a better solution with the shell built-in command read: read accepts some parameters and a call like
Code:
read -r -s -N1 [VARIABLE]
...
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Views 846 Comments 4 Michael Uplawski is offline
Old

Ruby: reading from STDIN, if there is something to read.

Posted 09-25-2021 at 02:11 AM by Michael Uplawski
Updated 10-09-2021 at 12:49 AM by Michael Uplawski (Category)

The logic of ARGV and ARGF still escapes me, I am approaching perfection empirically by trial, error and surrender. Now I believe to do stuff the right way, which is highly unsatisfactory.

Today's sura goes like this:

To avoid a hanging program, when there are no data waiting at STDIN, thou shalt write
Code:
if !STDIN.tty?
  # do as you must
end
tty meaning teletype-writer, it stands for terminal/console/pseudo-terminal and the like....
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Old

Email Filter With Procmail: Filter Received-Headers By IP-Range

Posted 07-12-2021 at 04:02 PM by Michael Uplawski
Updated 09-27-2021 at 10:46 AM by Michael Uplawski (missing words and letters ... this no good, wrong words, too. Even worze.)

A styled version of this text in French: http://www.uplawski.eu/articles/Linu..._Procmail.html
EDIT (27/09/2021): write positive test results to the procmail log-file

Introduction
I have not found much insight on the Web about the feasibility of an idea that I have had many years ago, but then had forgotten for a while:
Filter email by Received-header, if the IP-address in this header belongs to a specific range of IP-addresses.
...
Senior Member
Views 401 Comments 0 Michael Uplawski is offline
Old

False statement

Posted 03-23-2021 at 01:57 AM by Michael Uplawski
Updated 11-13-2021 at 01:44 AM by Michael Uplawski

I just modified my comment to one of my own blog-entries but now feel that it is itself worth an entry.

If it sticks it may be sticky. Avoid.
This comment contained a false statement. I have to leave it here and mark it as false, because it is frequently repeated in a pseudo-scientific context, by right-wing political activists, by marketing-experts, by so-called coaches.

The story is that, around 1955, an American scientific formulated a hypothesis which was
...
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Views 648 Comments 2 Michael Uplawski is offline

  



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