No, it is implemented by each editor/ ide independently with their own modifier.

On the contrary we have mostly consistent ctrl/shift + arrow behaviour over the last 15 or more years(I don't know before that). :-)

> On the contrary we have mostly consistent ctrl/shift + arrow behavior

Are you saying Windows has consistent Control/Shift + arrow behavior?

OS X is pretty consistent about this too, though Control+Arrow moves between Desktop Spaces, not related to text, but you can modify a lot of system/app shortcuts from Preferences -> Keyboard -> Shortcuts.

When I had a Mac (2009 - 2012) what modifier to use for different text movement operations varied wildly, even between the built in applications.

Mac using colleagues explained that it was because the applications where written using different toolkits.

Ctrl arrow in Windows jumps by word. In os x, it's option arrow. I believe it's widespread but not global.

I know.

Problem is: until at least 2012 not even Apple was consistent about it.

My most used editors (Sublime Text and Notepad++) have this.