Drupal patch Reversing patches

patch_apply_remove

apply
patch -p1 < path/file.patch

remove
patch -p1 -R < path/file.patch






Reversing patches

Last updated March 15, 2016.

You can reverse a patch if you have finished testing it, or if you want to see whether a problem has been introduced by a particular patch. You should also reverse a patch prior to adding a newer, updated version of the same patch. To reverse the patch, use the patch command with the -R option:

patch -p1 -R < path/file.patch
(If your patch was applied with the -p0 option, use that instead.)

Or:

git apply -R path/file.patch


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cd /path/to/docroot/
wget https://www.drupal.org/files/issues/____...patch_file.patch
git apply patch_file.patch
drush cr
drush updb