[SOLVED] Bash Regex validation

Issue

Why is the below regex working on: https://regex101.com/r/nI8xB8/1 But does not work in a bash script

^(feature|bugfix|refactor|release|hotfix|other)\/[a-z0-9._-]+\/[a-z0-9._-]+$

With test string

feature/XXXX-23/xxxx-xxxx

But feature/no-ref/xx-xxxx works

Script

local_branch="$(git rev-parse --abbrev-ref HEAD)"

valid_branch_regex="^(feature|bugfix|refactor|release|hotfix|other)\/[a-z0-9._-]+\/[a-z0-9._-]+$"

message="\x1B[01;91m Some message. \x1B[0m"

if [[ ! $local_branch =~ $valid_branch_regex ]] 
then
    echo "$message"
    exit 1
 else 
    echo "\x1B[01;92m Your branch name is okay \x1B[0m"
fi

Solution

I got it to work with the below Regex

valid_branch_regex="^(feature|bugfix|refactor|release|hotfix|other)\/[[:alnum:]._+-]+\/[[:alnum:]._+-]+$"

Using the POSIX class: :alnum: and collation to also allow _ and -

Refs:

https://en.wikibooks.org/wiki/Regular_Expressions/POSIX_Basic_Regular_Expressions

Answered By - Thabo

Answer Checked By - David Marino (WPSolving Volunteer)