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phorge-arcanist/support
Christopher Speck 41f6c6ecb2 Update "arc diff" to amend non-head commits with Mercurial
Summary:
After `arc diff` creates a revision in Phabricator it amends the commit to include a link to the revision in the commit message. For Mercurial this is done with `hg commit --amend --logfile` however this will fail when trying to create a diff for a non-head commit.

This updates `ArcanistMercurialAPI::amendCommit()` to allow amending a non-head commit in two ways, depending on whether `evolve` is in use:

No evolve:
1. Rebasing the current commit onto the current commit's parent, using the new commit message
2. Rebasing all children + descendants of the current commit onto the new resulting commit
3. Stripping the original commit

With evolve:
1. Amend the commit with `hg amend --logfile`
2. Run `hg evolve` to tidy up all commits

Test Plan:
I created 6 commits in a row placing a bookmark at commits 2 `bookmark1`, 4 `bookmark2`, and 6 `bookmark3`, and ensured I had `arc:bookmark` in my base ruleset.

No evolve, non-head changeset:
1. I verified I did not have `evolve` enabled by running `hg debugextensions` and did not see `evolve` in the listed active extensions.
2. I updated to `bookmark1` and modified a file to leave a dirty working state.
3. I ran `arc diff` and when prompted to amend my changes I said "yes", and verified a phab revision was created properly.
4. I checked the status of my repository and verified it was still linear and the bookmarks pointed to the proper commits.
5. I ran `hg log -r bookmark1 --template {desc}` to view the full commit message and verified it contained both `Summary: ...` and `Differential Revision: https://...`.
6. I ran `hg diff -c bookmark1` and verified the changes for that commit included the changes I made in step 2.

No evolve, head changeset:
1. I updated to `bookmark3` which is the head commit and modified a file to leave a dirty working state.
2. I ran `arc diff` and when prompted to amend my changes I said "yes", and verified a phab revision was created properly.
3. I checked the status of my repository and verified it was still linear and all the bookmarks pointed to the proper commits.
4. I ran `hg log -r bookmark3 --template {desc}` to view the full commit message and verified it contained both `Summary: ...` and `Differential Revision: https://...`.
5. I ran `hg diff -c bookmar3` and verified the changes for that commit included the changes I made in step 1.

With evolve:
1. I enabled `evolve` and verified it was enabled by running `hg debugextensions` and saw `evolve` in the listed active extensions.
2. I updated to `bookmark2` and modified a file to leave a dirty working state.
3. I ran `arc diff` and when prompted to amend my changes I said "yes", and verified a phab revision was created properly.
4. I checked the status of my repository and verified it was still linear and all the bookmarks pointed to the proper commits.
5. I ran `hg log -r bookmark2 --template {desc}` to view the full commit message and verfieid it contained both `Summary: ...` and `Differential Revision: https://...`.
6. I ran `hg diff -c bookmark2` and verified the changes for that commit included the changes I made in step 2.

Reviewers: #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D21686
2021-07-20 16:55:27 -04:00
..
arcanoid Correct an issue when winning "arc anoid" with certain terminal dimensions 2021-05-31 23:10:36 -07:00
hg Update "arc diff" to amend non-head commits with Mercurial 2021-07-20 16:55:27 -04:00
init Apply "pcre.*_limit" config options at startup in CLI environments 2021-02-19 11:16:09 -08:00
lib Allow lint to correct the spelling of builtin symbols 2021-02-03 13:26:33 -08:00
shell Port "arc prompts" from wilds and fix a path issue in shell completion 2020-04-11 10:43:05 -07:00
unit Merge utility/support changes from "wilds" to "master" 2020-02-13 14:10:09 -08:00
xhpast Fix improper XHPAST parsing of namespace grammar like "use x as private;" 2020-04-07 14:35:42 -07:00