Rg

Rg - Reference

`rg` cli options

`-F, --fixed-strings`	Fixed String Matches
`-t py`	select only python files
`-w, --word-regexp`	Word Regexp
`-f, --file PATTERNFILE`	search for all patterns, one pattern per line
`-s`	case sensitive
`-i`	case insensitive
`-S`	smart case
`-g "/tests/"`	search only tests files with glob
`-g "!/tests/"`	don’t search test files with inverse glob `!`
`--stats`	number of matches, number of line matches
`--sort created/modified`	sort results by file created/modified time
`-p, --pretty`	`rg -p foo \| less`, pipe color to other program

regular expression atoms

	Rg	Vim
zero or more	`?`	`\?`
1 or more	`+`	`\+`
precise number of matches	`{n,m}`	`\{n,m}`
word boundary	`\b`	`\< \>`
multiple patterns or	`\|`	`\\|`
non greedy	`.*?`	`.\{-}`
line starts with	`^`	`^`
line ends with	`$`	`$`
group	`( )`	``
back reference	not supported	`\1 \2 \3`

Example: to match company and companies

vim: compan$y\|ies$
rg: compan(y|ies)

Rg - How To

multi lines matching

Find Python Function Definitions and Usages

# this prints Definitions too because I don't know how to ignore lines
# starts with `def`
# 
# [^,] for removing imports

rg --multiline --multiline-dotall 'foo_function_name\(.*?\)[^,]' -g "!**/tests**"

search for different casing

foo_?bar searches for foo_bar, FOO_BAR, FOOBAR, fooBar

it works because

_? means _ is optional, i.e. the searched words can contain 0 or 1 _
The search is case insensitive by default

copy `rg` result into pasteboard for PR description…

rg foo --heading --line-number | pbcopy

Example output below

dev_notes.md
65:## Usage Example Of curo_request_kwargs
67:`_curo_request`