Hi Tassilo, 2013/6/4 Tassilo Horn <[email protected]>: > Mosè Giordano <[email protected]> writes: > >>> BTW, I don't see why we need 2 variables. Shouldn't >>> `TeX-electric-dollar' with no active region make the behavior you get >>> with `TeX-math-close-single-dollar' and the same customization. >> Good question. I've supposed someone can want to use >> `TeX-electric-dollar' but not `TeX-math-close-single-dollar' or vice >> versa. I use both, but I don't know what other people prefer. > > Well, I think most users either like electricity or they don't. I'd > prefer just one variable `TeX-electric-math' or so that supersedes > `TeX-electric-dollar', `TeX-math-close-single-dollar', and > `TeX-math-close-double-dollar'. > > The value '("$" . "$") with no active region, inserting the opening $ > would insert the closing dollar and place point in between. With an > active region, it would place the opening and closing dollars around the > region, and keep the region active. Then, you could transform a + b = c > to $$a + b = c$$ by selecting the region and hitting $ twice. > > When configured to '("\\(" . "\\)") it would be cool if with the active > region above, typing $ once would transform it to \(a + b = c\) and > typing $ again would make it to \[a + b = c\]. > > Does that make sense? > > (As a bonus, I think it would be fancy if a third $ would remove the > math again, so that you can cycle though the states "no math" -> "inline > math" -> "displaymath".) Ok, that's fine with me. The attached patch does all you suggested. There are a couple of problems - the cycling through "inline math" → "display math" → "no math" works only if marked region stays in a single line because, in regexps, `.' doesn't match newline. Suggestions? - as far as I can see, keeping region active doesn't work with Xemacs. In Emacs it suffices to bind `deactivate-mark' to nil, but this variable isn't present in Xemacs (at least in 21.4.22). Looking at code of f90-mode I've found this solution (http://bzr.savannah.gnu.org/lh/emacs/trunk/annotate/head:/lisp/progmodes/f90.el#L1828) --8<---------------cut here---------------start------------->8--- (if (featurep 'xemacs) (zmacs-activate-region) (setq mark-active t deactivate-mark nil)) --8<---------------cut here---------------end--------------->8--- Can `zmacs-activate-region' work?
I still have to adapt doc strings of `TeX-electric-math' and `TeX-insert-dollar'. Bye, Mosè
tex-insert-dollar.patch
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