This post really shows how old I am, because I immediately thought "does anyone actually compose on a mobile device?" The experience is so bad I limit my own mobile compositions to message responses like "k" and "lol".
I wrote this comment on my phone and it was an awful experience 🙃. But hey, at least my keyboard app suggested a silly emoji...
I'll continue to do my "real" writing on my desktop for now. Integration apps like KDEConnect have been enough for me to get by, but they aren't perfect either.
I've got a folding phone so I can unfold the screen into a small tablet and it's so much easier to type on it.
It would be nice if Samsung would put decent cameras in the fold, but I'm still going to get another one because I'm not going back to a teeny tiny screen.
I tried the F(x)tec Pro1x earlier this year in the hopes that it would unlock some writing productivity for me with its built-in keyboard. I managed to get one really cheap, but it (like many other "exotic" phones) had so many cellular network connectivity issues that I gave up. I now have a Samsung Galaxy A54 with GoogleFi. The typing experience sucks but at least I can make / receive calls...
But most importantly, fixing text editing isn’t seen as important enough in the war between Android and iOS. It’s not the flashy feature that shifts your Net Promoter Scores.
This kind of stuff is exactly why I hate non-free hardware and software, it kills experimentation. It sucks so much that there are no good options for free mobile phones. And for this you wouldn't even have to free your software, you'd simply have to give the user the ability to tinker with their OS outside of the walled garden that is the app-store filled with these shitty cash- and data-grabby webapps.
I use Gboard which does the same, but I also have multiple languages enabled which you switch by long-pressing the spacebar and I regularly trigger the wrong one - very annoying.
Hacker's Keyboard has arrow keys, shift, ctrl, alt, and escape. This isn't a limitation of phone keyboards in general, just the poor design choices of most stock keyboards.
Oh hey, I actually looked into alternative keyboards on Android the other day. Stumbled on Unexpected Keyboard, where the "press and hold" alternative symbols are accessible by swiping in the direction of it from its key instead. I think because it's FOSS, they've also added a whole bunch of other keyboard support such as ctrl and some unicode keys.
I've found that I prefer to tap and hold to get the alternative keys, but I loved the additional keys it had that were within easy visibility. Though it did look quite clustered that the default Samsung keyboard that I'm used to.
The last section makes me think they can't be bothered to take it into production. It's weird; they spend all these words describing the problem and their solution then conclude with but 🤷♂️ no-one really cares.
It's a passion project that someone or a team spend a lot of time and energy on, likely thinking that the advantages of implementation will be so obvious that it'll just be out into production based on its self-evident merits or improvement on existing practices.
Then it hits the concrete wall of reality, where there's actually lots of friction and barriers in the process of trying to get the project into production and implemented. Management just doesn't want to go ahead with it for whatever reason, and people don't seem to be as enthusiastic about it and clamoring for it as the dev/team thought they would be, despite it solving a number of common issues they have with a product/service.
So the dev/team can either go home and forget about it, starting a new project, or write a manifesto remembering and defending the project they've spent many hours on.
It almost reads like a PhD thesis defence. At least that PhD then gets recorded, filled and archived, and despite it potentially having no immediate real-world impact, possibly someone down the line might access the extensive work and research already done here, and use it to further their own project, and fingers crossed that project has more success in making a real-world change than this one.
TL;DR: I imagine his management don't want to go ahead with implementation for whatever reason, but because the research and any coding was done during his time at Google, he can't just go and create his own app or implementation, or approach another more willing company for implementation. But by providing the research and element summaries, and points for how a better system might work, he not only memorialized his hours of work on a "dead end" project, but allows others in a less captive situation the advantage of taking his summary and using it to actually try to get change happening elsewhere.
I have tried it multiple times with various devices, going back to the Palm Pilot. Modern Android does the best of any environment I've tried, but I still consider it unusable for editing. There may be some clever, outside-of-the-box solution that would make it viable, but so far there hasn't been enough demand to drive that kind of development.
On Android, I've used Hacker's Keyboard since my earliest days on the platform and still use it to this day. It provides a full 5-row layout including modifiers, control keys, and arrows. It works exactly like you'd expect it to work. I can't stand the default keyboards.
On mobile Linux, there is a keyboard called squeekboard that lets you define the key layout using .yaml files. The default layout is pretty limited, but I created my own portrait and landscape 5-row layouts also with modifiers, control keys, and arrows that makes the experience so much better. I'm typing this on my custom portrait layout. I often edit code and use the terminal with this layout too. phone keyboards are bad because of bad design choices, not because touch keyboards are inherently bad.
I know for sure it's on F-Droid. I installed it fairly recently (like a month ago). Pretty sure the name is "Hacker's Keyboard" and you need the apostrophe in the search or F-Droid won't find it.
What REALLY irks me is that the gboard keyboard on Android is context-sensitive. No, I don't want to have a shortcut for ".com" when long-pressing the period key while typing an address, I want to type a fscking dash!
I used to have a Blackberry Pearl which had a seemingly unique keyboard layout of two characters per key. It was the perfect compromise between the old school T9 and qwerty. That keyboard (with physical keys nonetheless) combined with that little trackball thing, it was easily the best handheld device I've used for text entry and editing. I know the article was focused on editing and not necessarily text entry but it really got me thinking. By doubling up and having two characters per key, it would open up a big chunk of real estate for things like cursor keys and other shortcuts.
I love typing and using keyboards in general. I love using Ctrl and Shift with the arrows, end & home, all of it. I would love to love doing it on my phone too.
This issue was solved by a 3rd party extension available on Cydia for Jailbroken iPhones a long time ago called SwipeSelection. Apple decided to copy the feature but implement it in a way (hold the space bar and scroll) that makes it usable thus useless. The time it takes to hold the spacebar to enable Apple's swipe thing makes it unpractical, the tweak was way better.