Summary:
Ref T13444. You can currently explicitly unassign an identity (useful if the matching algorithm is misfiring). However, this populates the "currentEffectiveUserPHID" with the "unassigned()" token, which mostly makes things more difficult.
When an identity is explicitly unassigned, convert that into an explicit `null` in the effective user PHID.
Then, realign "assigned" / "effective" language a bit. Previously, `withAssigneePHIDs(...)` actualy queried effective users, which was misleading. Finally, bulk up the list view a little bit to make testing slightly easier.
Test Plan:
- Unassigned an identity, ran migration, saw `currentEffectiveUserPHID` become `NULL` for the identity.
- Unassigned a fresh identity, saw NULL.
- Queried for various identities under the modified constraints.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13444
Differential Revision: https://secure.phabricator.com/D20908
Summary:
Ref T13444. Currently, identities for a particular email address are queried with "LIKE" against a binary column, which makes the query case-sensitive.
- Extract the email address into a separate "sort255" column.
- Add a key for it.
- Make the query a standard "IN (%Ls)" query.
- Deal with weird cases where an email address is 10000 bytes long or full of binary junk.
Test Plan:
- Ran migration, inspected database for general sanity.
- Ran query script in T13444, saw it return the same hits for "git@" and "GIT@".
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13444
Differential Revision: https://secure.phabricator.com/D20907
Summary:
Depends on D20919. Ref T13462. When editing milestones, we currently predict they will have no members for policy evaluation purposes. This isn't the right rule.
Instead, predict that their membership will be the same as the parent project's membership, and pass this hint to the policy layer.
See T13462 for additional context and discussion.
Test Plan:
- Set project A's edit policy to "Project Members".
- Joined project A.
- Tried to create a milestone of project A.
- Before: policy exception that the edit policy excludes me.
- After: clean milestone creation.
- As a non-member, tried to create a milestone. Received appropriate policy error.
Maniphest Tasks: T13462
Differential Revision: https://secure.phabricator.com/D20920
Summary:
Ref T13462. Currently, when testing milestone edit policies during creation, the project object does not behave like a milestone:
- it doesn't have a milestone number yet, so it doesn't try to access the parent project; and
- the parent project isn't attached yet.
Instead: attach the parent project sooner (which "should" be harmless, although it's possible this has weird side effects); and give the adjusted policy object a dummy milestone number if it doesn't have one yet. This forces it to act like a milestone when emitting policies.
Test Plan:
- Set "Projects" application default edit policy to "No One".
- Created a milestone I had permission to create.
- Before: failed with a policy error, because the project behaved like a non-milestone and returned "No One" as the effective edit policy.
- After: worked properly, correctly evaluting the parent project edit policy as the effective edit policy.
- Tried to create a milestone I did not have permission to create (no edit permission on parent project).
- Got an appropriate edit policy error.
Maniphest Tasks: T13462
Differential Revision: https://secure.phabricator.com/D20919
Summary:
Fixes T13461. Some applications provide hints about policy strength in the header, but these hints are inconsistent and somewhat confusing. They don't make much sense for modern objects with Custom Forms, which don't have a single "default" policy.
Remove this feature since it seems to be confusing things more than illuminating them.
Test Plan:
- Viewed various objects, no longer saw colored policy hints.
- Grepped for all removed symbols.
Maniphest Tasks: T13461
Differential Revision: https://secure.phabricator.com/D20918
Summary: Fixes T13456. These edits are remarkup edits and should attach files, trigger mentions, and so on.
Test Plan: Created a text panel, dropped a file in. After changes, saw the file attach properly.
Maniphest Tasks: T13456
Differential Revision: https://secure.phabricator.com/D20906
Summary:
Ref T13454. Fixes T13006. When a user provide us with an SSH private key and (possibly) a passphrase:
# Try to verify that they're correct by extracting the public key.
# If that fails, try to figure out why it didn't work.
Our success in step (2) will vary depending on what the problem is, and we may end up falling through to a very generic error, but the outcome should generally be better than the old approach.
Previously, we had a very unsophisticated test for the text "ENCRYPTED" in the key body and questionable handling of the results: for example, providing a passphrase when a key did not require one did not raise an error.
Test Plan:
Created and edited credentials with:
- Valid, passphrase-free keys.
- Valid, passphrased keys with the right passphrase.
- Valid, passphrase-free keys with a passphrase ("surplus passphrase" error).
- Valid, passphrased keys with no passphrase ("missing passphrase" error).
- Valid, passphrased keys with an invalid passphrase ("invalid passphrase" error).
- Invalid keys ("format" error).
The precision of these errors will vary depending on how helpful "ssh-keygen" is.
Maniphest Tasks: T13454, T13006
Differential Revision: https://secure.phabricator.com/D20905
Summary:
Fixes T13443. When a panel raises an exception during edit action generation, it currently escapes to top level. Instead, catch it more narrowly.
Additionally, mark "ChangesetSearchEngine" as not being a suitable search engine for use in query panels. There's no list view or search URI so it can't generate a sensible panel.
Test Plan:
- Added a changeset panel to a dashboard.
- Before: entire dashboard fataled.
- After: panel fataled narrowly, menu fatals narrowly, dashboard no longer permits creation of another Changeset query panel.
Maniphest Tasks: T13443
Differential Revision: https://secure.phabricator.com/D20902
Summary:
Ref T13442. Ref T13157. There's a secret URI to look at an object's hovercard in a standalone view, but it's hard to remember and impossible to discover.
In developer mode, add an action to "View Hovercard". Also add "View Handle", which primarily shows the object PHID.
Test Plan: Viewed some objects, saw "Advanced/Developer...". Used "View Hovercard" to view hovercards and "View Handle" to view handles.
Maniphest Tasks: T13442, T13157
Differential Revision: https://secure.phabricator.com/D20887
Summary:
Ref T13453. Some of the Asana integrations also need API updates.
Depends on D20899.
Test Plan:
- Viewed "asana.workspace-id" in Config, got a sensible GID list.
- Created a revision, saw the associated Asana task get assigned.
- Pasted an Asana link I could view into a revision description, saw it Doorkeeper in the metadata.
Maniphest Tasks: T13453
Differential Revision: https://secure.phabricator.com/D20900
Summary: Ref T13453. The Asana API has changed, replacing all "id" fields with "gid", including the "users/me" API call result.
Test Plan: Linked an Asana account. Before: error about missing 'id'. After: clean link.
Maniphest Tasks: T13453
Differential Revision: https://secure.phabricator.com/D20899
Summary:
Fixes T13452. We currently give users mixed signals about the interaction mode of this text: the cursor says "text" but the behavior is "grab".
Make the behavior "text" to align with the cursor. An alternate variation of this change is to remove the cursor, but this is preferable if it doesn't cause problems, since copying the task ID is at least somewhat useful.
Test Plan: In Safari, Firefox, and Chrome: selected and copied object names from workboard cards; and dragged workboard cards by other parts of their UI.
Maniphest Tasks: T13452
Differential Revision: https://secure.phabricator.com/D20898
Summary: Ref T13425. When a change adds or removes a block (vs adding or removing a document, or changing a block), we currently try to render `null` as cell content in the unified view. Make this check broader to catch both "no opposite document" and "no opposite cell".
Test Plan: {F7008772}
Subscribers: artms
Maniphest Tasks: T13425
Differential Revision: https://secure.phabricator.com/D20897
Summary: Ref T13448. Minor UI issue: setting a "Fetch Refs" value does not highlight the associated menu item, but should.
Test Plan: Set only "Fetch Refs", now saw menu item highlighted.
Maniphest Tasks: T13448
Differential Revision: https://secure.phabricator.com/D20895
Summary:
Fixes T13448. We currently "git clone" to initialize repositories, but this will fetch too many refs if "Fetch Refs" is configured.
In modern Phabricator, there's no apparent reason to "git clone"; we can just "git init" instead. This workflow naturally falls through to an update, where we'll do a "git fetch" and pull in exactly the refs we want.
Test Plan:
- Configured an observed repository with "Fetch Refs".
- Destroyed the working copy.
- Ran "bin/repository pull X --trace --verbose".
- Before: saw "git clone" pull in the world.
- After: saw "git init" create a bare empty working copy, then "git fetch" fill it surgically.
Both flows end up in the same place, this one is just simpler and does less work.
Maniphest Tasks: T13448
Differential Revision: https://secure.phabricator.com/D20894
Summary:
Ref T13448. The default behavior of "git fetch '+refs/heads/master:refs/heads/master'" is to follow and fetch associated tags.
We don't want this when we pass a narrow refspec because of "Fetch Refs" configuration. Tell Git that we only want the refs we explicitly passed.
Note that this doesn't prevent us from fetching tags (if the refspec specifies them), it just stops us from fetching extra tags that aren't part of the refspec.
Test Plan:
- Ran "bin/repository pull X --trace --verbose" in a repository with a "Fetch Refs" configuration, saw only "master" get fetched (previously: "master" and reachable tags).
- Ran "git fetch --no-tags '+refs/*:refs/*'", saw tags fetched normally ("--no-tags" does not disable fetching tags).
Maniphest Tasks: T13448
Differential Revision: https://secure.phabricator.com/D20893
Summary:
Ref T13448. When "Fetch Refs" is configured:
- We switch to a narrow mode when running "ls-remote" against the local working copy. This excludes surplus refs, so we'll incorrectly detect that the local and remote working copies are identical in cases where the local working copy really has surplus refs.
- We rely on "--prune" to remove surplus local refs, but it only prunes refs matching the refspecs we pass "git fetch". Since these refspecs are very narrow under "Fetch Only", the pruning behavior is also very narrow.
Instead:
- When listing local refs, always list everything. If we have too much stuff locally, we want to get rid of it.
- When we identify surplus local refs, explicitly delete them instead of relying on "--prune". We can just do this in all cases so we don't have separate "--prune" and "manual" cases.
Test Plan:
- Created a new repository, observed from a GitHub repository, with many tags/refs/branches. Pulled it.
- Observed lots of refs in `git for-each-ref`.
- Changed "Fetch Refs" to "refs/heads/master".
- Ran `bin/repository pull X --trace --verbose`.
On deciding to do something:
- Before: since "master" did not change, the pull declined to act.
- After: the pull detected surplus refs and deleted them. Since the states then matched, it declined further action.
On pruning:
- Before: if the pull was forced to act, it ran "fetch --prune" with a narrow refspec, which did not prune the working copy.
- After: saw working copy pruned explicitly with "update-ref -d" commands.
Also, set "Fetch Refs" back to the default (empty) and pulled, saw everything pull.
Maniphest Tasks: T13448
Differential Revision: https://secure.phabricator.com/D20892
Summary:
Fixes T13446. Currently, the validation logic here rejects a rename like "alice" to "ALICE" (which changes only letter case) but this is a permissible rename.
Allow collisions that collide with the same user to permit this rename.
Also, fix an issue where an empty rename was treated improperly.
Test Plan:
- Renamed "alice" to "ALICE".
- Before: username collision error.
- After: clean rename.
- Renamed "alice" to "orange" (an existing user). Got an error.
- Renamed "alice" to "", "!@#$", etc (invalid usernames). Got sensible errors.
Maniphest Tasks: T13446
Differential Revision: https://secure.phabricator.com/D20890
Summary: Fixes T13445. Make the meaning of this condition more clear, since the current wording is ambiguous between "any of" and "all of".
Test Plan: Edited a Herald rule with a PHID list field ("Project tags"), saw text label say "include none of".
Maniphest Tasks: T13445
Differential Revision: https://secure.phabricator.com/D20889
Summary:
Fixes T13441. Internally, projects can be queried by depth, but this is not exposed in the UI.
Add a "Is root project?" contraint in the UI, and "minDepth" / "maxDepth" constraints to the API.
Test Plan:
- Used the UI to query root projects, got only root projects back.
- Used "project.search" in the API to query combinations of root projects and projects at particular depths, got matching results.
Maniphest Tasks: T13441
Differential Revision: https://secure.phabricator.com/D20886
Summary: Ref T13440. Give the table more obvious visual structure and get rid of the largely useless header columns.
Test Plan: Viewed table, saw a slightly cleaner result.
Maniphest Tasks: T13440
Differential Revision: https://secure.phabricator.com/D20885
Summary: Depends on D20883. Ref T13440. In most cases, all changes belong to the same repository, which makes the "Repository" column redundant and visually noisy. Show repository information in a section header.
Test Plan: {F6989932}
Maniphest Tasks: T13440
Differential Revision: https://secure.phabricator.com/D20884
Summary: Depends on D20882. Ref T13440. Instead of lists of "Differential Revisions" and "Commits", show all changes related to the task in a tabular view.
Test Plan: {F6989816}
Maniphest Tasks: T13440
Differential Revision: https://secure.phabricator.com/D20883
Summary: Ref T13440. This feature is used in only one interface which I'm about to rewrite, so throw it away.
Test Plan: Grepped for all affected symbols, didn't find any hits anywhere.
Maniphest Tasks: T13440
Differential Revision: https://secure.phabricator.com/D20882
Summary:
Ref T12164. Ref T13439. Commit hovercards don't currently show the repository. Although this is sometimes obvious from context, it isn't at other times and it's clearly useful/important.
Also, use identities to render author/committer information and show committer if the committer differs from the author.
Test Plan: {F6989595}
Maniphest Tasks: T13439, T12164
Differential Revision: https://secure.phabricator.com/D20881
Summary:
On fresh installation which doesn't have yet any task closed you will not be able to open charts because of error below:
Fixes:
```
[Mon Oct 21 15:42:41 2019] [2019-10-21 15:42:41] EXCEPTION: (TypeError) Argument 1 passed to head_key() must be of the type array, null given, called in ..phabricator/src/applications/fact/chart/PhabricatorFactChartFunction.php on line 86 at [<phutil>/src/utils/utils.php:832]
[Mon Oct 21 15:42:41 2019] #0 phlog(TypeError) called at [<phabricator>/src/aphront/handler/PhabricatorAjaxRequestExceptionHandler.php:27]
[Mon Oct 21 15:42:41 2019] #1 PhabricatorAjaxRequestExceptionHandler::handleRequestThrowable(AphrontRequest, TypeError) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:797]
[Mon Oct 21 15:42:41 2019] #2 AphrontApplicationConfiguration::handleThrowable(TypeError) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:345]
[Mon Oct 21 15:42:41 2019] #3 AphrontApplicationConfiguration::processRequest(AphrontRequest, PhutilDeferredLog, AphrontPHPHTTPSink, MultimeterControl) called at [<phabricator>/src/aphront/configuration/AphrontApplicationConfiguration.php:214]
[Mon Oct 21 15:42:41 2019] #4 AphrontApplicationConfiguration::runHTTPRequest(AphrontPHPHTTPSink) called at [<phabricator>/webroot/index.php:35
```
To fix issue - lets return empty data set instead
Test Plan:
1) Create fresh phabricator installation
2) Create fresh project
3) Try viewing charts
Reviewers: epriestley, Pawka, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin, yelirekim
Differential Revision: https://secure.phabricator.com/D20861
Summary:
Ref T13279. See PHI1491. Currently, the top-level "Burnup Rate" chart in Maniphest shows total created tasks above the X-axis, without adjusting for closures.
This is unintended and not very useful. The filtered-by-project charts show the right value (cumulative open tasks, i.e. open minus close). Change the value to aggregate creation events and status change events.
Test Plan: Viewed top-level chart, saw the value no longer monotonically increasing.
Maniphest Tasks: T13279
Differential Revision: https://secure.phabricator.com/D20879
Summary: Ref T13438. This is a sort of minimal plausible implementation.
Test Plan: Used "harbormaster.artifact.search" to query information about artifacts.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13438
Differential Revision: https://secure.phabricator.com/D20878
Summary:
Fixes T13437. This URI construction was just missing URI encoding.
Also, trim the symbol because my test case ended up catching "#define\n" as symbol text.
Test Plan:
- Configured a repository to have PHP symbols.
- Touched a ".php" file with "#define" in it.
- Diffed the change.
- Command-clicked "#define" in the UI, in Safari/MacOS, to jump to the definition.
- Before: taken to a nonsense page where "#define" became an anchor.
- After: taken to symbol search for "#define".
Maniphest Tasks: T13437
Differential Revision: https://secure.phabricator.com/D20876
Summary:
Ref T13436. There's no real security value to doing this comparison, it just wards off evil "security researchers" who get upset if you ever compare two strings with a non-constant-time algorithm.
In practice, SSH public keys are pretty long, pretty public, and have pretty similar lengths. This leads to a relatively large amount of work to do constant-time comparisons on them (we frequently can't abort early after identifying differing string length).
Test Plan: Ran `bin/ssh-auth --sshd-key ...` on `secure` with ~1K keys, saw runtime drop by ~50% (~400ms to ~200ms) with `===`.
Maniphest Tasks: T13436
Differential Revision: https://secure.phabricator.com/D20875
Summary: Depends on D20873. Ref T13436. Allow callers to configure "bin/ssh-auth --sshd-key %k" as an "AuthorizedKeysCommand"; if they do, and we recognize the key, emit just that key in the output.
Test Plan:
- Used `git pull` locally, still worked fine.
- Instrumented things, saw the public key lookup actually work and emit a single key.
- Ran without "--sshd-key", got a full key list as before.
Maniphest Tasks: T13436
Differential Revision: https://secure.phabricator.com/D20874
Summary:
Ref T13436. Historically, this script could be used with a forked copy of "sshd" to do lower-cost per-key auth.
Relatively modern "sshd" supports "%f" to "AuthorizedKeysCommand", which effectively moots this.
Users have never been instructed to use this script for anything, and we moved away from this specific patch to "sshd" some time ago.
Test Plan: Grepped for "ssh-auth-key", no hits.
Maniphest Tasks: T13436
Differential Revision: https://secure.phabricator.com/D20873
Summary:
Fixes T13435. If you move Phabricator or copy data from one environment to another, the repository URI index currently still references the old URI, since it writes the URI as a plain string. This may make "arc which" and similar workflows have difficulty identifying repositories.
Instead, store the "phabricator.base-uri" domain and the "diffusion.ssh-host" domain as tokens, so lookups continue to work correctly even after these values change.
Test Plan:
- Added unit tests to cover the normalization.
- Ran migration, ran daemons, inspected `repository_uriindex` table, saw a mixture of sensible tokens (for local domains) and static domains (like "github.com").
- Ran this thing:
```
$ echo '{"remoteURIs": ["ssh://git@local.phacility.com/diffusion/P"]}' | ./bin/conduit call --method repository.query --trace --input -
Reading input from stdin...
>>> [2] (+0) <conduit> repository.query()
>>> [3] (+3) <connect> local_repository
<<< [3] (+3) <connect> 555 us
>>> [4] (+5) <query> SELECT `r`.* FROM `repository` `r` LEFT JOIN `local_repository`.`repository_uriindex` uri ON r.phid = uri.repositoryPHID WHERE (uri.repositoryURI IN ('<base-uri>/diffusion/P')) GROUP BY `r`.phid ORDER BY `r`.`id` DESC LIMIT 101
<<< [4] (+5) <query> 596 us
<<< [2] (+6) <conduit> 6,108 us
{
"result": [
{
"id": "1",
"name": "Phabricator",
"phid": "PHID-REPO-2psrynlauicce7d3q7g2",
"callsign": "P",
"monogram": "rP",
"vcs": "git",
"uri": "http://local.phacility.com/source/phabricator/",
"remoteURI": "https://github.com/phacility/phabricator.git",
"description": "asdf",
"isActive": true,
"isHosted": false,
"isImporting": false,
"encoding": "UTF-8",
"staging": {
"supported": true,
"prefix": "phabricator",
"uri": null
}
}
]
}
```
Note the `WHERE` clause in the query normalizes the URI into "<base-uri>", and the lookup succeeds.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13435
Differential Revision: https://secure.phabricator.com/D20872
Summary:
Ref T13425. The changes in D20865 could incorrectly lead to selection of a DocumentEngine that can not generate document diffs if a file was added or removed (for example, when a source file is added).
Move the engine pruning code to be shared -- we should always discard engines which can't generate a diff, even if we don't have both documents.
Test Plan: Viewed an added source file, no more document ref error arising from document engine selection.
Maniphest Tasks: T13425
Differential Revision: https://secure.phabricator.com/D20866
Summary: Ref T13425. When a file (like a Jupyter notebook) is added or removed, we can still render a useful line-by-line diff.
Test Plan:
- Viewed add/modify/remove of Jupyter, source code, and images in 2up/1up mode, everything looked okay.
Maniphest Tasks: T13425
Differential Revision: https://secure.phabricator.com/D20865
Summary:
Fixes T13431.
Increase the "panel" version of project member lists to 10 users, hide disabled users, swap the buttons to "tail buttons".
Sort disabled users to the bottom of "full list" versions of member lists.
For UI consistency, render the remove "X" as disabled but visible if users don't have permission to remove members.
Test Plan:
- Viewed a project with disabled members.
- Saw only enabled members on the main project page.
- Saw disabled members sorted to the bottom on the members page.
- Clicked "View All" to jump from the panel to the members page.
- As a user who could not edit a project, viewed the members page and saw a disabled "X" with a policy error when clicked.
- Removed a member as before, as a normal user with permission to remove members.
Maniphest Tasks: T13431
Differential Revision: https://secure.phabricator.com/D20864
Summary:
Fixes T13433. Currently, "Login Screen Instructions" in "Auth" are shown only on the main login screen. If you enter a bad password or bad LDAP credential set and move to the flow-specific login failure screen (for example, "invalid password"), the instructions vanish.
Instead, persist them. There are reasonable cases where this is highly useful and the cases which spring to mind where this is possibly misleading are fairly easy to fix by making the instructions more specific.
Test Plan:
- Configured login instructions in "Auth".
- Viewed main login screen, saw instructions.
- Entered a bad username/password and a bad LDAP credential set, got kicked to workflow sub-pages and still saw instructions (previously: no instructions).
- Grepped for other callers to `buildProviderPageResponse()` to look for anything weird, came up empty.
Maniphest Tasks: T13433
Differential Revision: https://secure.phabricator.com/D20863
Summary: Fixes T13430. Provide more information about repositories in "diffusion.repository.search".
Test Plan: Used API console to call method (with new "metrics" attachment), reviewed output. Saw new fields returned.
Maniphest Tasks: T13430
Differential Revision: https://secure.phabricator.com/D20862
Summary:
Ref T13429. It's currently possible to write "TYPE_EDGE" relationships for the "object has project" edge to PHIDs which may not actually be projects. Today, this fatals.
As a first step, unfatal it. T13429 discusses general improvements and greater context.
Test Plan:
Used "maniphest.edit" to write a "project" edge to a user PHID, viewed the task in the UI. Previously it fataled; now it renders unusually (the object is "tagged" with a user) but faithfully reflects database state.
{F6957606}
Maniphest Tasks: T13429
Differential Revision: https://secure.phabricator.com/D20860
Summary: See PHI1499. This error message doesn't provide parameters, and can be a little bit more helpful.
Test Plan: {F6957550}
Differential Revision: https://secure.phabricator.com/D20859
Summary:
Depends on D20853. See PHI1474. If the list of "--not" refs is sufficiently long, we may exceed the maximum size of a command.
Use "--stdin" instead, and swap "--not" for the slightly less readable but functionally equivalent "^hash", which has the advantage of actually working with "--stdin".
Test Plan: Ran `bin/repository refs ...` with nothing to be done, and with something to be done.
Differential Revision: https://secure.phabricator.com/D20854
Summary: See PHI1474. This query can become large enough to exceed reasonable packet limits. Chunk the query so it is split up if we have too many identifiers.
Test Plan: Ran `bin/repository refs ...` on a repository with no new commits and a repository with some new commits.
Differential Revision: https://secure.phabricator.com/D20853
Summary: If portal is created with id > 9 - then those portals are not reachable and always return 404.
Test Plan: Create at least 10 portals, 10th and rest of them will no longer return 404.
Reviewers: epriestley, Pawka, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: Korvin
Differential Revision: https://secure.phabricator.com/D20852
Summary: Ref T13425. When we render a diff between two source lines, highlight intraline changes.
Test Plan: Viewed a Jupyter notebook with a code diff in it, saw the changed subsequences in the line highlighted.
Maniphest Tasks: T13425
Differential Revision: https://secure.phabricator.com/D20851
Summary:
See PHI1468. Engine selection for diffs is currently too aggressive in trying to find a shared engine and will fall back a shared engine with a very low score, causing all ".json" files to render as Jupyter files.
Only pick an engine as a difference engine by default if it's the highest-scoring engine for the new file.
Test Plan: Viewed ".json" files and ".ipynb" files in a revision. Before, both rendered as Jupyter. Now, the former rendered as JSON and the latter rendered as Jupyter.
Differential Revision: https://secure.phabricator.com/D20850
Summary:
Depends on D20844. Ref T13425. When we line up two blocks and they can be interdiffed (generally: they both have the same type of content), let the Engine interdiff them.
Then, make the Jupyter engine interdiff markdown.
Test Plan: {F6898583}
Maniphest Tasks: T13425
Differential Revision: https://secure.phabricator.com/D20845
