git - What does interdiff do that diff cannot? -

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if i'm trying find diff between 2 diffs, why can't diff 2 diffs?

i have tested diff diff1 diff2 , interdiff diff1 diff2 , have not found difference in output. in case different?

(i aware interdiff's stated purpose find changes between 2 patches.)

interdiff - show differences between 2 diff files

interdiff creates unified format diff expresses difference between 2 diffs.
diffs must both relative same files.
best results, diffs must have @ least 3 lines of context.

an interdiff text file in patch format describes changes between 2 versions of patch. using interdiffs best practice saves time , reduces tedium reviewers allowing them focus on changes introduced in patch iterations.

you should supply 1 whenever update significant patch in issue queues (it ignored drupal.org testbots, make sure upload full patch too).

create interdiff using git

//always pull latest changes. git pull --rebase  //create branch old patch. git checkout -b my_first_branch  // download old version of patch wish  // update , apply local git repository. git apply --index patchname.patch  // commit changes old patch. git commit -m "my_first_branch"  // depending on how work, have choice between // 2 options. if not yet have new patch created, can // create new branch. git checkout -b my_second_branch  // otherwise, let's go mainline branch , create  // new branch patch from. git checkout any_reuired_commit_id git checkout -b my_second_branch  // make changes on new branch (e.g. apply new patch),  // commit changes. git commit -m "my_second_branch"  // generate interdiff comparing current (new) branch against  // old branch. git diff my_first_branch > interdiff-my_first_branch-[new_comment_number].txt  // can create updated patch @ point with: git diff any_reuired_commit_id > my_second_branch.patch

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