Option to prevent wrapping of lines inside of code blocks.

[charles-plessy]

Hello,

I am exploring the possible use of rich-cli as a markdown → text renderer for text-based email readers like mutt, in which I want to limit the width of the area where the text is being displayed.

If I have an input like:

sfda sdfdsa
sfda sdfdsa sfda sdfa sfd sadfsadfsad asdfafdsf asfasdfsadf asdfsdfasd asdfasdasdfa asdfasdfasdf asdfasdfsaf asfdsdfafds

```
sfda sdfdsa
sfda sdfdsa sfda sdfa sfd sadfsadfsad asdfafdsf asfasdfsadf asdfsdfasd asdfasdasdfa asdfasdfasdf asdfasdfsaf asfdsdfafds
```

Then rich-cli -w 80 converts it to:

sfda sdfdsa sfda sdfdsa sfda sdfa sfd sadfsadfsad asdfafdsf asfasdfsadf
asdfsdfasd asdfasdasdfa asdfasdfasdf asdfasdfsaf asfdsdfafds                    

sfda sdfdsa                                                                 
sfda sdfdsa sfda sdfa sfd sadfsadfsad asdfafdsf asfasdfsadf asdfsdfasd      
asdfasdasdfa asdfasdfasdf asdfasdfsaf asfdsdfafds

However I am searching for a way that in the code block (which could be a diff with long lines, for example), lines are never wrapped (like what GitHub does)…