Tuesday, April 26

it's text editor tuesday!

Welcome to the first installment of this exciting new feature! (Ok, and probably the last, because I forget about things and fear commitment.) Anyway, this is where I will share something I've recently discovered about editing text (in Vim or otherwise).

The other day, I decided I was tired of typing the datestamps on these entries, so I stuck this in ~/bin/today (which is in my $PATH):

echo -n '<h3>'`date '+%A, %B %e'`'<h3>'

And this in my .vimrc:

" use comma for the leader key
let mapleader = ","

" get a datestamp for a p1k3 entry
" .-1 puts it on the current line, since :r reads onto the line below the
" current one (or below the specified line - so here we're specifying the
" one before the current one)
nmap <leader>td :.-1r !today<CR><CR>

Silly, but it may illustrate a handful of useful techniques. Namely:

— I use nmap so the mapping will only apply in normal mode. Reading about the distinctions between mapmodes opens up quite a few possibilities for writing context-sensitive commands.

— If you define a leader, you'll have a place to hang custom keybindings without interfering with any of Vim's established ones. The comma seems to be a typical choice.

— With :r !foo, you can read the output of any given shell command. I knew that before, but I had to skim the docs for ranges to discover that you can say something like "current line minus one". Helpful if you don't want the output from :r showing up below where you're at.

— Say echo -n if you don't want a trailing newline on the output.

p1k3 / 2011 / 4 / 26
tags: topics/technical, topics/vim