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Quick Grep

TL;DR : A tiny (<500 loc) C file that does a fast grep with great defaults for programming.

🔍💨✨

Usage

Compile the C file, name the output gg (for quick typing) and put it somewhere in your path. It will do a recursive, case insensitive search by default and put in line numbers so the output plays well with many editors like vim.

$> grep -inR "int i" .
vs
$> gg int i

Vim Usage

Add something like this to your .vimrc:

command! -nargs=+ Find cexpr system('gg ' . shellescape('<args>'))

And you can now use:

:Find int i

to quickly find relevant results from your current directory downward.

Smart Case

gg by default will perform a case-insensitive search but if you provide what looks like capital letters then it will perform a case-sensitive search. This is inspired by the smartcase option of vim and works really well.

$> gg test    # matches test, TEST, tEsT...
$> gg Test    # matches only Test

Run Directory

gg searches in current directory but you can pass -c ../some/other/path to run the search in another directory.

$> gg test                    # searches in current directory and sub-directories
$> gg -c ../some/path test    # searches in ../some/path and sub-directories

Invert Results

It's also useful to search for lines that do not match a certain condition.

$> gg test     # matches test, TEST, tEst... etc
$> gg -v test  # returns lines that do NOT match test, TEST, tEst... etc

Performance

gg ignores directories like .git, or node_modules, or target, large files, and binary files, and this gives us quite a boost in many cases:

$> time grep -inR "int i" . > /dev/null
real    0m32.282s
user    0m15.777s
sys     0m1.600s

$> time gg int i > /dev/null
real    0m1.415s
user    0m0.603s
sys     0m0.139s

Of course these are benchmarks on my machine for my specific use case so take them with a large grain of salt. Still, it’s pretty fast for a tiny C script.

Customisation

gg gives you zero customisation options. However, because it’s a tiny, simple C file, you can probably make it do whatever you like!

Enjoy!

theproductiveprogrammer / QuickGrep