[Octave-bug-tracker] [bug #59238] load variables from file: the next saving operation produces a faulty file

[Markus Mützel]

Follow-up Comment #22, bug #59238 (project octave):

The correct number of characters is stored in the file. The issue here is for
strings that contain line feed characters "\n". When those are written to a
file that is opened in text mode on an OS that has CRLF default line endings
(like Windows) those "\n" characters expand to "\r\n".
When we are loading strings from files, we are reading the number of bytes
marked in the file. If some of those bytes expanded to two bytes, we are going
to miss some bytes from the end.
If a tool would replace the "\r\n" with "\n" the byte count would be correct
again.

If we can't open the files in text mode for reading, that leaves us with
options 1.b) (write in binary mode). Or option 2 (adapt the number of read
bytes on platforms with CRLF line ending according to how many line endings
have been read in the string).
I still prefer option 1.b).

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