In GNU Emacs 27.2 is there a way to change the text font size of a single buffer without changing all open instances of that buffer (in different frames)?
In my version of emacs, when I use Ctrl+MouseWheel up/down it enlarges or reduces the font size for all instances of the current buffer. I'm interested in just instance of the buffer (in one frame) to be resized.
What I've tried
Searching I found SO question/answer
I looked for a solution to my question and found this article which indicates that the feature I'm looking for is not supported. See https://www.emacswiki.org/emacs/SetFonts it says:
You can resize (text-scale) the text in a buffer (in all windows showing it), or you can resize the default font of a frame.
I also found this question/answer:
Is it possible to change the font size in specific buffers? This explains how a buffer's text can be resized in all frames (that have the buffer open). Basically, I already have this working with Ctrl+MouseWheel up/down.
Why do I want to do this? you might ask. I have a daily notes file in which I use emacs outline mode. I'll put (in some cases) a large (100+ lines) of a log file for my records and easy grep'ing for problems in the future. The outline mode makes it trivial to collapse a large log so I can focus on my notes.
However, when I'm studying a log file I want smaller font; so I want one frame for notes and a separate frame for studying a log file.