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IBM didn't want Microsoft to use the Tab key to move between dialog fields

devblogs.microsoft.com

31–40 of 250 posts

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#31

A great read, although I'd still like to know what IBM's reasoning for opposing this use of the Tab key was. Is it because they didn't want Tab to be both an input and a control character? I.e. there are some cases where you can type a Tab into an input field, and there are other cases where you can't, and it's not immediately obvious which ones are which? All the way in 2026, I would still be sympathetic to this vie…

Maybe because it would compete with IBM mainframes / 3270 terminal emulators?

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#32
post #14

As someone who prefers tabs (I'm not looking to argue), I once asked Brendan Eich on Twitter why he prefers spaces. His answer was more thoughtful than I'd expected. The tab key itself is hijacked by modern OS/UI behavior. It makes it complicated to actually type literal tab characters in certain contexts, particularly in the browser. I still prefer tabs (and I'm a Go developer), but he is absolutely correct about th…

Non english speaker trying to wrap my head around what Brendan said to you. I was once told that the tab key can be represented in different ways on different systems, and that's why spaces are safer because they're always represented the same. Is that what Brendan was trying to say?

No he's saying if you're trying to write code in an edit box in a web browser (for example) and you press tab, instead of inserting a tab character it will move the focus to the next input field.

Bullshit reasoning though, because even people who use spaces for indentation don't do it by hammering the space bar - they also press the tab key. And of course in modern browsers we can give tab the expected behaviour.

The only logic I've ever heard for using spaces for indentation that actually makes sense and I vaguely agree with, is that lots of programmers do not give a shit about formatting code and even using spaces properly is often a bit too much for them.

That doesn't matter so much if you have an autoformatter though, so with the exception of Go I don't know why modern languages with widely used autoformatters don't use tabs.

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#33
post #13

I find this story odd because IBM was consistent with their keyboard nomenclature across multiple products, and the 3270 series mainframe terminals used the Tab key, located in the same place where you would find a tab key on a modern keyboard, to move the cursor to the next field. https://www.bitsavers.org/pdf/ibm/3278/GA27-2890-4_3278_Disp... (Page 73 of the PDF) As an aside, it's worth noting that moving between f…

And this is a great example of why I read the comments on HN stories... thanks for the info!

RIP /.

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#34

A great read, although I'd still like to know what IBM's reasoning for opposing this use of the Tab key was. Is it because they didn't want Tab to be both an input and a control character? I.e. there are some cases where you can type a Tab into an input field, and there are other cases where you can't, and it's not immediately obvious which ones are which? All the way in 2026, I would still be sympathetic to this vie…

Personally I don't like the tab key for field change.

Firstly it was a breaking change from dos. Dos programs used Enter. And enter meant you could capture numeric data using 1 hand, since the numeric keypad has an enter key.

That means left hand can stay on the (paper) source. Right hand types. People got fast at this. (Really fast). And this pattern lives on in some programs kline Excel).

Lots of people (ie my customers) hated needing both hands on the keyboard. Lots of our programs allowed mapping of enter=tab.

I should be clear. It's not the "name" of the key that matters, it's the location.

The dual-use of the key is just an annoyance we live with. Sometimes the key behaves as a navigator, but in other cases it behaves as a spacer. Daft. (Enter would have the same problem. )

The best solution (by far) would gave been to add another key to the keyboard. Preferably in the numeric key pad. We got lots of new keys in that era. Hindsight says we should have added a "move on" key at that time.

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#35
post #14

As someone who prefers tabs (I'm not looking to argue), I once asked Brendan Eich on Twitter why he prefers spaces. His answer was more thoughtful than I'd expected. The tab key itself is hijacked by modern OS/UI behavior. It makes it complicated to actually type literal tab characters in certain contexts, particularly in the browser. I still prefer tabs (and I'm a Go developer), but he is absolutely correct about th…

Non english speaker trying to wrap my head around what Brendan said to you. I was once told that the tab key can be represented in different ways on different systems, and that's why spaces are safer because they're always represented the same. Is that what Brendan was trying to say?

Tab key is both a control character moving the cursor to the next input and also an input representing the tab character as you see in a text editor.

Now that im thinking about it I’m convinced capslock would have been superior next field key and alt+capslock to be used for toggling capslock. But it’s not obvious to me capslock [e: must be] seen by the OS. It could be changed on the keyboards themselves.

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#36
post #14

As someone who prefers tabs (I'm not looking to argue), I once asked Brendan Eich on Twitter why he prefers spaces. His answer was more thoughtful than I'd expected. The tab key itself is hijacked by modern OS/UI behavior. It makes it complicated to actually type literal tab characters in certain contexts, particularly in the browser. I still prefer tabs (and I'm a Go developer), but he is absolutely correct about th…

Control-shift-u, 9, space/enter, works on most Linux systems.

To explain: control-shift-u allows entering a Unicode character by its hexadecimal code. This presumably depends on the Input Method Editor (IME) in use, which is something I've never fully understood, but this seems to work widely across different desktop environments (Xfce, KDE) and display servers (Xorg, Wayland).

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#37
post #13

I find this story odd because IBM was consistent with their keyboard nomenclature across multiple products, and the 3270 series mainframe terminals used the Tab key, located in the same place where you would find a tab key on a modern keyboard, to move the cursor to the next field. https://www.bitsavers.org/pdf/ibm/3278/GA27-2890-4_3278_Disp... (Page 73 of the PDF) As an aside, it's worth noting that moving between f…

Having worked at IBM, I would guess that using the tab key in this way was part of a patent they were pursuing and Microsoft's use would show this to be 'obvious' and thus not patentable. But that is just a guess.

In the 80's IBM had a whole class of high level technical people called "Systems Engineers" whose entire job description was to opine on the merits of any given system. Not write systems, not debug them, and certainly not to explain them, it was simply to opine "you're doing it wrong."

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#38
post #13

I find this story odd because IBM was consistent with their keyboard nomenclature across multiple products, and the 3270 series mainframe terminals used the Tab key, located in the same place where you would find a tab key on a modern keyboard, to move the cursor to the next field. https://www.bitsavers.org/pdf/ibm/3278/GA27-2890-4_3278_Disp... (Page 73 of the PDF) As an aside, it's worth noting that moving between f…

Also conspicuously missing from the story is what key IBM DID want to use. I mean... that's the first question you'd ask!

Lame.

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#39
post #13

I find this story odd because IBM was consistent with their keyboard nomenclature across multiple products, and the 3270 series mainframe terminals used the Tab key, located in the same place where you would find a tab key on a modern keyboard, to move the cursor to the next field. https://www.bitsavers.org/pdf/ibm/3278/GA27-2890-4_3278_Disp... (Page 73 of the PDF) As an aside, it's worth noting that moving between f…

Having worked at IBM, I would guess that using the tab key in this way was part of a patent they were pursuing and Microsoft's use would show this to be 'obvious' and thus not patentable. But that is just a guess. In the 80's IBM had a whole class of high level technical people called "Systems Engineers" whose entire job description was to opine on the merits of any given system. Not write systems, not debug them, an…

Microsoft is suffering from the lack of such a group today; they're definitely doing it wrong, where "it" is pretty much everything... except pissing off users.

Re: IBM didn't want Microsoft to use the Tab key to move between dialog fields

#40
post #18

A great read, although I'd still like to know what IBM's reasoning for opposing this use of the Tab key was. Is it because they didn't want Tab to be both an input and a control character? I.e. there are some cases where you can type a Tab into an input field, and there are other cases where you can't, and it's not immediately obvious which ones are which? All the way in 2026, I would still be sympathetic to this vie…

I now imagine a world where CAPSLOCK is used as "select the next input" and TAB as the character.

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