dabbrev for every buffer

Hi, I would like to use the dabbrev for every file where connected to our git project. I wrote it to use every buffer (just for testing): `(defun my/dabbrev-select-buffer (other-buffer)` `(eq 1 1))` `(setq dabbrev-friend-buffer-function #'my/dabbrev-select-buffer)` But it isn't working. How can I set it up well ?

The only code formatting method which works for all of reddit is to switch the reddit editor to markdown mode and indent the code by 4 spaces (you can use `M-4 C-x C-i` on a region followed by `M-x untabify` to achieve this in Emacs). Otherwise for lots of readers your message looks like this: https://old.reddit.com/r/emacs/comments/t0wc5e/dabbrev_for_every_buffer/

Thanks! Any comment for the question?

Can you explain the issue you are trying to solve? `dabbrev` searches all the (non-trivial) buffers by default, so what is your problem with the default behavior, and why do you need to change anything from the defaults?

I would like to use the dabbrev to find the words in a css file when I'm working with an html. I try to add the css class to the html tag. css file: .css-class-1 { ... } html file: <div class="css-class-1"> if I use the dabbrev in the css file I can find the words well. I found that the default process use the other buffers with same major mode only. I wrote this small defun just check it's working or not.

No, because I still can't tell what the actual code you're attempting to use is -- it remains completely broken-looking. (The purpose of my previous comment was that you would fix it so that readers could see what it really was.)

> I found that the default process use the other buffers with same major mode only. By default? That is not true, AFAIK: it looks in *all* buffers. Do you see what you describe above in `emacs -Q`? If not, perhaps you have some customizations that produce that effect.

Thank yo for your answer but I think I can't read or ... If I think well the dabbrev-friend-buffer-function what is make a decision they need to check in the other buffers or not. I thought I need to make a function here to find the css and html and js files when I use dabbrev. The setting is same with plugins and without plugins ("dabbrev--same-major-mode-p') and now with -Q the html and css file see each others. Woow. I need to use emacs without plugins :D Maybe there is an other line somewhere what I havne't read yet :D Could you advice a documentation where I can read it ?

My suggestion is to find which of the plugins you use modifies the default values of dabbrev variables. You can review all the defcustoms at the beginning of `dabbrev.el` and compare their values in your session with the default values. Then try to find out which plugins make these changes.

u/eli-zaretskii, I thought I write back what I found: The dabbrev works in that way what you mentioned. The web-mode causes the problem. I don't know why and how to do it I'm dropping it and use ng2-mode or html-mode instead. Thank you for the help!