There's a hidden preference in DTP that lets you add file extensions that are to treated as plain text.

defaults write com.devon-technologies.think3 AdditionalPlainTextExtensions -string .bike

This fixed the .html problem for me. My notes: https://wiki.baty.net/#2023.07.27%20-%20Using%20.bike%20files%20as%20templates%20in%20DEVONthink


Amontillado wrote:

For a number of reasons it's nice to make maps of content in Devonthink.
Bike is probably my new favorite tool for that because it's quick and
low friction for editing lists. Devonthink links work fine in Bike
files, so it can link to DT notes, files, groups, or tags.

Yesterday I found the game changer. Devonthink recognizes links,
backlinks, and mentions in Bike files.

There is one small wrinkle, not Bike's fault, and with an easy
workaround.

Devonthink will open and edit a Bike file. Unfortunately, it changes the
file type from Bike to HTML and you no longer have a Bike-friendly file
- but there's a nice workaround.

Set a smart rule to lock any file with a Bike extension on creation,
import, or moving into the database.

The lock is just within the context of Devonthink. You can still open a
"locked" file in Bike and edit to your heart's content. The only
limitation is I haven't found a way to save an empty Bike file as a
template in Devonthink. Creating a new Bike file from a template results
in an HTML file, not a Bike file.

I grumble, but I can live with that limitation.