Forgot to reply to lyx-users...sorry. Now including reply to list. On Fri, Jun 27, 2014 at 11:41 AM, Rudi Gaelzer <rudi.gael...@ufrgs.br> wrote:
> Dear Jacob. > > > What I want and need is a means to implement the math ENVIRONMENTS defined > by the mathtools package and that are not explicitly supported by LyX. > Specifically for multiline equations. LyX supports the standard AMS inner > and outer environments, such as align (outer) and aligned (inner). > However, multline is only an outer env in the standard AMSmath. The > mathtools pack defines the corresponding inner multlined environment, and > it seems that there is no way to use it other than ERTing the math input > (see attached file). > Hi Rudi, It looks like I did indeed misunderstand your question initially. As you demonstrated in your example file, it is indeed possible to use ERT to accomplish what you wanted. The main thing (if I understand correctly now) is that you would like to avoid the need to ERT math, which basically defeats the purpose of LyX's math editing tools (and preview). I was able accomplish what *I believe* you were looking for using the environ package. Basically, you can re-define an environment. In the attached example, I re-defined the multline* environment to use the multlined environment instead. You could easily include a box if desired. See the attached example. The magic is in the preamble: \usepackage{environ} \RenewEnviron{multline*}{% \begin{displaymath} \begin{multlined} \BODY \end{multlined} \end{displaymath} } I hope this helps, Jacob
mathtoolsEnvironDemo.lyx
Description: application/lyx