TB 128.6.1esr (64-bit) - Mails in local folders ‘disappeared’

[fredonmac]

128.6.1esr (64-bit) on M1 MacMini, Sequoia 15.3

Mails have disappeared in local folders, I guess since the last update (don't always check if all are still there).

I imported the mailboxes and local folders from Postbox in autumn. Everything was still there.

I used Folder Compare to compare the TB directories with the Time Machine backup immediately after the import and today's status. By and large, all the files are still there, with only minor differences in size.Repairing does not lead to any success! Is my dim memory still correct that this can be solved by deleting the respective *.msf file?
Tested - no success!

More about this in the Thunderbird-Mail forum, it would be tedious to translate the whole process and post it here.

Is there any indication of what could be the cause and what else I should try?

https://www.thunderbird-mail.de/forum/thread/96253-tb-128-6-1esr-64-bit-mails-in-lokalen-ordnern-ver... 

[fredonmac]

It seems to be a simple code page problem.
Original file opened with BBEdit - ‘save as’ this comes up for selection

If you save the copy in this format, mails are not visible!
But if you change this, save as a copy with this code page:

Mails are visible at once!
My guess - Mozilla has made a mistake - because it has worked so far!

Please correct this!

[fredonmac]

Sorry, in my haste I didn't finish writing and only realised later that I had forgotten the essentials!

Here the problem is clearly described - and also the differences between OS, like Unix, Linux / Windows / Mac

Difference between CR LF, LF and CR line break types
https://stackoverflow.com/questions/1552749/difference-between-cr-lf-lf-and-cr-line-break-types#1552...

Difference Between Carriage Return (CR) and Line Feed (LF) ? How it is used in Different Operating System?
https://www.geeksforgeeks.org/difference-between-carriage-return-and-line-feed/

[fredonmac]

This command works well, mails are seen now:

% tr -d '\r' < /Users/FritzS/__Test/DIY\&amp\ \&\ Friends > RockGrotto

From https://www.geeksforgeeks.org/difference-between-carriage-return-and-line-feed/