Hello Dan
Dan Hitt <dan.hitt@gmail.com> writes:
> I am using emacs 26.1 on debian 10.3.
>
> The bug is that when you copy bolded-colored text from an eshell buffer
> into an enriched-text buffer, the bold shows after the copy --- but if you
> then close the enriched-text file, and re-open it, the bolding is gone.
I have no experience with Enriched mode but I read this from [1]:
Enriched mode is typically used with Text mode (see Text Mode). It
is not compatible with Font Lock mode, which is used by many major
modes, including most programming language modes, for syntax
highlighting (see Font Lock). Unlike Enriched mode, Font Lock mode
assigns text properties automatically, based on the current buffer
contents; those properties are not saved to disk.
So if the "bolded-colored" text is a font lock thing, it will not be
saved to disc. Could that be it?
[1] https://www.gnu.org/software/emacs/manual/html_node/emacs/Enriched-Text.html#Enriched-Text-1
--
Tomas
Thanks Thomas for your mail.
I think something like that might explain the behavior: i believe that a command in eshell (or a shell buffer also) gets bolded as a result of fontlock.
But when the bolded text is copied to the enriched buffer, it stays bolded, even though there's no font-lock in enriched text.
Presumably the bolded state of the text is visible to elisp---it must just be some kind of text property.
So, as part of the saving process, enriched-text-mode could certainly traverse the buffer and note all the places where text is bold and save those as well as being bold.
It already does something like that because when you manually bold text (via M-o b), that bolded text is remembered.
And, as an analogy: when the text changes color in eshell --- for example, the response to a command gets colored orange, that color change is also due to font-lock.
When the colored text is copied into an enriched-mode buffer, the text stays orange. And when the enriched buffer is saved, the orange color gets saved with it.
So sometimes, at least, enriched saves on a WYSIWYG basis.
dan