… not set (j92)This PR was squashed before being merged into the 4.4 branch (closes #31546).Discussion----------[Dotenv] Use default value when referenced variable is not set| Q             | A| ------------- | ---| Branch?       | 4.4| Bug fix?      | no| New feature?  | yes <!-- please update src/**/CHANGELOG.md files -->| BC breaks?    | no     <!-- seehttps://symfony.com/bc -->| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->| Fixed tickets | #...   <!-- #-prefixed issue number(s), if any -->| License       | MIT| Doc PR        |symfony/symfony-docs#11956 <!-- required for new features -->In bash you have the option to define a default variable like this:```bashFOO=${VARIABLE:-default}```When VARIABLE is not set```bashFOO=${VARIABLE:-default} #FOO=default```When VARIABLE is set:```bashVARIABLE=testFOO=${VARIABLE:-default} #FOO=test```If others find this also a good idea, I will write documentation and add the Doc PR. But first I would like some feedback to check if anyone agrees with this feature.Commits-------790dbad149 [Dotenv] Use default value when referenced variable is not set

… not set (j92)This PR was squashed before being merged into the 4.4 branch (closes#31546).Discussion----------[Dotenv] Use default value when referenced variable is not set| Q             | A| ------------- | ---| Branch?       | 4.4| Bug fix?      | no| New feature?  | yes <!-- please update src/**/CHANGELOG.md files -->| BC breaks?    | no     <!-- seehttps://symfony.com/bc -->| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->| Fixed tickets | #...   <!-- #-prefixed issue number(s), if any -->| License       | MIT| Doc PR        |symfony/symfony-docs#11956 <!-- required for new features -->In bash you have the option to define a default variable like this:```bashFOO=${VARIABLE:-default}```When VARIABLE is not set```bashFOO=${VARIABLE:-default} #FOO=default```When VARIABLE is set:```bashVARIABLE=testFOO=${VARIABLE:-default} #FOO=test```If others find this also a good idea, I will write documentation and add the Doc PR. But first I would like some feedback to check if anyone agrees with this feature.Commits-------790dbad [Dotenv] Use default value when referenced variable is not set

This PR was merged into the 4.4 branch.Discussion----------Added small section about default values<!--If your pull request fixes a BUG, use the oldest maintained branch that containsthe bug (seehttps://symfony.com/roadmap for the list of maintained branches).If your pull request documents a NEW FEATURE, use the same Symfony branch wherethe feature was introduced (and `master` for features of unreleased versions).-->Added a short description and a code sample of how to use default values when referenced variables are not set. The feature PR issymfony/symfony#31546.Commits-------1848e00 Added small section about default values

* 4.4:  Add missing versionadded directive. refs#11956  Added small section about default values