>> This I do not understand? Shell highlighting for all strings?
>
> Yep :)
>
> I tried implementing this with `polymode` a while back -- it sort of worked but was slow enough to be annoying, although that's perhaps my lack of skill with lisp. I eventually got stuck when I realized that the "bash parts" are actually "bash + python format mini language": the curly braces kept messing things up. Deriving a python-string-shell-mode from shell-mode was beyond me.
I share @endrebak's confusion on the "all strings" bit. It doesn't seem
like it'd be useful to highlight fields like input/output/threads as
bash.
> Perhaps the low hanging fruit - just applying font locks to the python
> format mini language parts - would suffice.
I see them as mostly orthogonal, at least in implementation. The
mini-language parts would be highlighted via
snakemake-font-lock-keywords; the shell string would need mmm-mode (or
or another similar mode). The mini-language parts would be highlighted
by default; for the shell string, users would have to install/activate
mmm-mode, like they now have to do for R bits, and I believe it'd
override any other fontification.
Anyway, I'll plan to add highlighting for at least some mini-language
parts. For the shell mmm-mode stuff, I may find time to play around
with it (I don't use mmm-mode/wouldn't use this feature personally), but
I'd certainly welcome a PR adding it if you get something working
nicely.
> Although that one should probably just be implemented in python-mode? Curious that python-mode doesn't do that already...
Dunno. I suppose I can't think of any programming modes that have
special fontification of formatting specs (e.g., emacs-lisp-mode:
(format "all string %s" "font")), but there are of course lots out
there, so there may be good examples.
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