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Re: Why doesn't Info `T' cache node tree for current file?

From: Juri Linkov
Subject: Re: Why doesn't Info `T' cache node tree for current file?
Date: Wed, 11 Jun 2008 12:27:57 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (x86_64-pc-linux-gnu)

>> It is not very quick, since the code has to reread all Info subfiles
>> (its slowest part).
> That was my thinking - it really does seem to do quite a lot of work.
> On the other hand, at least with the manuals I use (Emacs and Elisp), it seems
> pretty snappy to me. Do you really see a performance problem, or is this just
> hypothetical?

If you have a fast machine, this doesn't mean everyone has the same.
Try on at least 300MHz proc to see how quick it is.

>> I see one problem: how to refresh the cached TOC buffer when
>> the Info file changes
> Do you mean when you go to a different manual (different file), or do you mean
> when someone changes the file on disk?
> I think we can ignore the latter (no?).

The same Info file doesn't change too often, but there are situations when
for instance, the user writes a new Info manual, and in the process of
writing uses the TOC as an overview of the manual (i.e. iterations like
add a new node, revisit the TOC, reorganize its structure, and so on).

Juri Linkov

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