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patch_update.md

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A patch file captures the local changes (additions and deletions) to the source code. It can be shared on R's Bugzilla to propose a change to R, e.g. a fix for a bug.

To make a patch

  1. Update your local copy of the source

If you have not recently updated your local copy of the R Subversion repository, follow the instructions in Updating the Source Code to do this first.

  1. Create a patch file

Go to the source directory and use svn diff to create a patch.

cd $TOP_SRCDIR
svn diff > $PATCHDIR/patch.diff

The patch file will be saved in the directory specified by the PATCHDIR environment variable that is defined when the codespace starts

echo $PATCHDIR/patch.diff