Git Commit SHA in GO

Match Git commit hashes, both short (7 chars) and full (40 chars) forms.

Pattern

\b[0-9a-f]{7,40}\b   (flags: g)

Go (RE2) code

package main

import (
	"fmt"
	"regexp"
)

func main() {
	re := regexp.MustCompile(`\b[0-9a-f]{7,40}\b`)
	input := `commit 75d2cb0`
	for _, match := range re.FindAllString(input, -1) {
		fmt.Println(match)
	}
}

Uses `regexp.MustCompile` (panics on bad patterns at startup) and `FindAllString` for all matches.

How the pattern works

Examples

Same pattern, other engines