git别名使用$（（LINES / 2））

Question

我已经尝试了大约30种变体，包括sh -c版本，双引号和单引号，嵌套引号等。我缺少什么？

shortlog = "!git log -n $((LINES / 2))"

Answer 1

What if you define a function?

function shortlog { tmp=$(($LINES / 2)); git log -n "$tmp"; }

then export it:

export -f shortlog

You should put it in your .bashrc I guess if you want to use it each time you start a terminal (but you can first try it on a isolated sterminal of course).

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EDIT :

does this help?

git config alias.shortlog '!f() { tmp=$(($LINES / 2)); git log -n "$tmp"; }; f'

Answer 2

I don't love how I finally got this to work, but it's literally the only thing that's worked at all, and I want this to be over. I removed everything relating to the shorter log aliases from my ~/.gitconfig , and in my ~/scripts folder - which is in my $PATH - I made files with names like git-las (list all short), with code like this in each:

#!/bin/bash

$height=$(tput lines)
$height=$((height / 3))
git la -$height

I made each executable. Git will take git las and find git-las (no extension) on my path, if its executable, and execute it, and it works. That git la (list all) is in my ~/.gitconfig , and is just the typical git log --all --oneline --graph --decorate everyone gives their own name to. This is the only thing that works, after easily 100 variations on every bit of online info I could find. Even trying to move the tput stuff back into ~/.gitconfig fails, and $LINES also fails in these working files; it's always 0.

What a battle, but now I have short logs (a few different sizes and settings) that scale dynamically with the window to always give me roughly 1/2 to 1/4 oneline log output - dividing by 3 (and 6 for 1/4) accounts for some extra space around merge commits and tricky branch pathways. I've had these hard-coded for a year, but now I'm starting to properly version and share my dotfiles between machines, so I wanted it dynamic for all my different monitor heights, and so it would work in an expected fashion no matter how big I had the window.