How to avoid composer discard changes message

Question

I\'m updating symfony verdors via composer. I always do it using:

php composer.phar update

But recent version of composer, before update ea

Answer 1

both @lemats and @reza-sanaie's answers are incomplete as --no-interaction (-n) composer's option is required to have a real update without any question (see https://github.com/composer/composer/pull/1188#issuecomment-16011533).

So after

php composer.phar config --global discard-changes true

or after modifying composer.json

"config": {
    "discard-changes": true
},  

use

php composer.phar update -n