* On 31 Jan 2017, Andreas Doll wrote: > > I write emails using vim, which provides the handy function gggqG. This > function reformats text such that it doesn't exceed (say) 72 characters. The > function is superior to e.g. > > $ fold -s -w 72 inputFile
par is superior to all other text reformatters.
set display_filter="env PARINIT='rT4bgq B=.,?!_A_a Q=_s>|+' par"
But to your question:
> Recently I've learned about the display_filter option, and now I want to use
> this vim function to also reformat emails I read, not just those I send. Ex is
> (roughly) a way to perform vim actions and commands without starting a vim
> instance. So I thought I create a file commands.vim containing
>
> :normal gggqG
> :%print
> :%quit!
>
> and use in my muttrc
>
> set display_filter='cat commands.vim | ex'
The display filter is a filter in a strict sense: the message is send on
its stdin, and its stdout goes back to mutt. So what you get is
analogous to the following:
cat emailmessage.txt | cat commands.vim | ex
The first cat is a no-op since the second cat doesn't read its stdin in
this case. You can combine a file with stdin with, e.g.
cat commands.vim -
But that isn't what you want. You need to compose it so that ex gets
your message and the stdin:
#!/bin/sh
tmp=${TMPDIR-/tmp}/tmp.$$
touch $tmp
trap "rm $tmp" 0 1 2 3 15
cat >$tmp
cat commands.vim | ex $tmp
Then set display_filter to run that script.
This is all approximate - untested. Some tweaks might be necessary.
--
David Champion • d...@bikeshed.us
signature.asc
Description: PGP signature
