On Mon, Mar 27, 2017 at 2:00 PM, Laslo Hunhold <d...@frign.de> wrote: > On Tue, 28 Mar 2017 00:52:03 +0300 > Alexander Krotov <ilab...@gmail.com> wrote: > > Hey Alexander, > >> As Laslo Hunhold suggests down the thread, this solution is likely to >> be more complex. >> >> To implement it properly, you have to implement a whole VT inside >> of stsb, because it has to pass mouse events down and keep track >> of character attributes. ncurses programs will output all kinds >> of "move cursor here" and "change color" control sequences, but you >> can't just pass them again to st when you need to scroll around. You >> have to take your virtual state of the screen and render it in your >> own way, adapting it to current viewport. Well, you can delegate >> rendering to ncurses, but state machine which tracks screen state >> will just replicate terminal emulator functions. >> >> In the end, you will have a stripped down dvtm, with vt but without >> multiplexing. > > this is a very good point! Even if this was approached with an external > tool you probably just start implementing st again with all the bells > and whistles, let alone the fact that you need a separate program to > make st work as desired in a normal setup within a window manager. > >> After that, I can proceed with implementation of scrollback based >> on ring buffer. If it makes code simpler (by removing line shuffling, >> allocation and deallocation in tresize), it may be integrated into >> st. If not, it will be just another patch. > > A scrollback based on a ring buffer sounds exciting; I'm really looking > forward to see how much it adds in the end. After all, the wiki might > still be an option, but I would really propose to integrate it if it > turns out not to be too complex.
I'd love to see scrollback also. I've played around a tiny bit with dumping everything that goes through st to a file and binding dwm key to run less on it etc. but never got anything good enough that I use it, largely because of the issue mentioned above. Admittedly I could have tried harder but my suspicion is that the best place for scrollback actually is in the terminal emulator. Britton
