A related question is whether everybody always wants to search in
symlink targets when isearching file names in dired... I don't.  Would
it be worth to add an option for that?  Currently the properties are
just hardcoded.

Then, in the above patch we could make the `font-lock-ensure' call
depend on the value of that option.


> Also noticed that doing the first replacement always raises an error:
>
> Debugger entered--Lisp error: (error "Match data clobbered by buffer
> modification hooks")
>   replace-match("!" nil nil)
>   replace-match-maybe-edit("!" nil nil nil (672 673 #<buffer char>) nil)
>   perform-replace("7" "!" t t nil nil nil nil nil nil nil)
>   query-replace-regexp("7" "!" nil nil nil nil nil)
>   funcall-interactively(query-replace-regexp "7" "!" nil nil nil nil nil)
>   command-execute(query-replace-regexp)

Do I interpret the code in replace_match correctly: this error doesn't
even mean the match data has been clobbered - only that modification
hooks called searching functions?  I don't know what the referenced
search_regs.num_regs exactly contains.  But we already seem to ensure
not to clobber match data.


Michael.