[Texmacs-dev] [bug] multiple trailing spaces serialization

[David Allouche]

While reverse engineering the TM file format (to answer to an old bug
report) I found a very funny bug in the serialization (memory to file
conversion) code for the TM format (also known as angle brackets and
backslashes).

Description:

Create a new file. Type in the following text: "abc " (one trailing
space), save the file. The text line is serialized as "abc\ ". So far,
so good.

Add one trailing space (yielding "abc  ", with two trailing spaces),
save the file. The line is serialized as "abc \\ ". Revert the buffer,
the displayed text becomes "abc \"!!!

That bug works with any number of trailing spaces greater than one,
and at the end of any multiparagrah environment (e.g. theorem), but
only at the end of block environments.

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