Re: ^M in the info files

[Juri Linkov <juri@jurta.org>]

> There are *many* such examples in my info directory.  230 out of 856
> files in my /usr/share/info have them.  It looks like all of them
> have one or more instances of the line (in cat --show-all syntax):
>
> ^@^H[index^@^H]$
>
> In the case of faq.texi it is from the code:
>
> @node Concept index,  , Mail and news, Top
> @unnumbered Concept Index
> @printindex cp
>
> @contents
>
> I have texinfo-4.12 installed, but some of the relevant files date back
> as far as 2004/August, so it isn't just a recent thing.

This is an old feature, so I wonder why it starts causing problems
just now.

It is also used for embedded images in Info files:

  ^@^H[image src="BINARYFILE" text="TXTFILE" alt="ALTTEXT ... ^@^H]

so with a lot of images the percentage of null-bytes may be too high.

The Info reader correctly treats the coding cookie, so one solution
is to write it to all Info files, but this does help with existing
files.

But I still doesn't understand the problem with ^@^H in Info files.

-- 
Juri Linkov
http://www.jurta.org/emacs/