The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

  • My badges

  • Twitter Updates

  • My Flickr Stream

  • Pages

  • All categories

  • Enter your email address to subscribe to this blog and receive notifications of new posts by email.

    Join 2,979 other subscribers

Archive for September 22nd, 2020

git – Change commit author at one specific commit – Stack Overflow

Posted by jpluimers on 2020/09/22

Every now and then I forget to git config --local and git config --local, so git takes my global settings and I need to fix one or more commits to it shows the correct author.

For the last commit, when not yet pushed, this is easy:

git commit --amend --author="Author Name <>"

For historic commits, or when you already pushed, it gets far more difficult, so I am glad there is a good set of steps at [WayBackgit – Change commit author at one specific commit – Stack Overflow.

For now in my %USERPROFILE%\.gitconfig file, I have added entries for various accounts so it is easier to spot them with git config --list --global then edit them using git config --edit --local:

    name = jeroenfo
    email =
    name = Jeroen Wiert Pluimers
    email =
    name = Jeroen Wiert Pluimers
    email =

If you pushed, but nobody pulled, and you are the only one committing, then the steps are like this if your git is 1.8 or higher:

  1. Once,
    1. perform git rebase -i --root
    2. at all commits you want to edit, change pick into edit
    3. write the file, then leave the editor (:wq)
  2. For each commit, until git indicates No rebase in progress?:
    1. perform git commit --amend --reset-author --no-edit
    2. perform git rebase --continue


Posted in Development, DVCS - Distributed Version Control, git, Software Development, Source Code Management | Leave a Comment »

Women should rule IT again, not just because inheritance in Cobol functions differently than in other languages.

Posted by jpluimers on 2020/09/22

From a while back, but still relevant: [WayBack] Vererbung funktioniert in Cobol anders als in anderen Sprachen… – Kristian Köhntopp – Google+

Translated, this is:

I found some COBOL code at a client. Nothing special. The last comment in it was from 1985, written by my mother. That was my WTF moment of the year, including the look on the face of the technical manager: here inheritance gets a totally different perspective.

An interesting take from that thread is that in the past, women ruled IT.

They should do this again while they can, as a mixed team can combine “first time right” with “minimum viable product”. It is all about balance.

Andreas Dorfer
Cool-Programmierung in den 70ern und frühen 80ern scheint eine Frauendomäne gewesen zu sein. Zumindest bei uns waren die letzten Aktiven daran in den späten 90ern (die mehr als nur Hotfixes drangebastelt haben), gestandene Frauen mit Lesebrillen an Perlenketten.

Jeroen Wiert Pluimers
+Andreas Dorfer yup, and they were doing excellent jobs. Women still could rule IT, there are just to few working in IT.

Andreas Dorfer
+Jeroen Wiert Pluimers those folks really listened and asked relevant questions before making any half baked proposal. Then they produced a lot of documents in binders, including flow diagrams… made a prototype, tested the unit and produced another binder full of paper.. And if there any question after going live, they just told you on the phone: “Look at sheet xy, paragraph z, there we documented this behaviour as conforming your request. Shall we schedule a meeting to setup a change request together?”. They had been working like accounting: sometimes incredibly slow, but with precision and accuracy… if things went wrong, the best advice was always to ask yourself, where you might have a flaw in the initial request.

Andreas Dorfer 384da9306d6501301d80001dd8b71c47 (900×266)

This apart from the fact that comments have not changed much over time:

Read the rest of this entry »

Posted in Development, History, Software Development | Leave a Comment »

Delphi Gem of the day: putting “reintroduce” on a destructor. destructor…

Posted by jpluimers on 2020/09/22

A nice thread with examples of all the things you should not do with the Delphi reintroduce keyword:

[WayBack] Delphi Gem of the day: putting “reintroduce” on a destructor.     destructor Destroy(); reintroduce; overload; In our case all we got was a memory lea… – Moz Le – Google+

The problem is that in the original (archived) documentation, not much waring is given around using reintroduce; it is merely posted as solving a nuisance to absolve a compiler warning.

When using it though, all your alarm systems should go off at their highest level as you break polymorphism, but through careful language usage, the pattern you hide can still be used.

One day I will write a longer blog article on this.


A decade of progress has not changed much on this documentation apart from some nicer formatting:


Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »

%d bloggers like this: