Re: Isearch interaction model

[Davis Herring]

> We have a search history because it's often the case that we want to 
> repeat something we've recently done --- look up the same word, find 
> the same function, and so on. It doesn't make sense to me that the 
> exact mechanism we use to search for a particular thing should
> affect its recency or the way in which we recall it.
But "repeating" a search for \_<foo\_> as a non-regexp search is useless.

> It's very easy already to casually switch between literal and regex 
> isearch with M-r. Why should this distinction affect the way in which
> we recall that search?
I think the answer is to have one history which records the mode used 
for each search, so that it is reused correctly.  (When it makes sense, 
the user can change the search mode after selecting the history element.)

> > keeping toggled parameters in later searches?

...Which fits nicely with the idea that the parameters are "sticky" 
(either to a history element or to the user's current state).

Davis

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