Summary:
Ref T13556. These options are very old and effectively obsoleted by "bin/phd debug [--trace]". I haven't used either option diagnostically in many years, and they aren't mentioned in the documentation.
Remove them to simplify configuration, and because "phd.trace" doesn't work anyway and likely hasn't for a long time -- it has specific issues with TTY detection (see T13556).
Test Plan: Grepped for "phd.trace" and "phd.verbose". Ran "bin/phd debug [--trace]" and saw verbose/trace output.
Maniphest Tasks: T13556
Differential Revision: https://secure.phabricator.com/D21426
Summary:
Ref T13555. Currently, the daemon future may resolve into a failure state immediately inside "start()", and not have a valid PID when we read it.
Instead, read PIDs from the current active future in all cases, using "hasPID()" to test for the presence of a valid PID.
Since we don't query the PID immediately, we no longer need to explicitly start the future.
Also fix an issue where the same future could be added to the overseer pool more than once if it threw on "resolve()". In general:
- Before we "resolve()" a future, detach it from the DaemonHandle: we're always done with it.
- Catch exceptions on resolution and treat them the same way as subprocess resolution errors. These aren't common, but are possible in the general case.
- Have DaemonHandle add futures to the future pool directly when they're created.
Test Plan:
- Ran daemons with intentional subprocess creation failures, saw clean recovery.
- Ran daemons with intentional resolution exceptions, saw clean recovery.
Maniphest Tasks: T13555
Differential Revision: https://secure.phabricator.com/D21425
Summary:
Ref T13555. Although these callsites may not actually impact anything, it's possible for an active handle to have no PID (e.g., if the subprocess failed to start).
Handle these cases more carefully.
Test Plan: Started daemons, saw them run fine. See also next change.
Maniphest Tasks: T13555
Differential Revision: https://secure.phabricator.com/D21424
Summary:
Fixes T13554. For certain prose diff inputs and PCRE backtracking limits, this regular expression may back track too often and fail.
A characteristic input is "x x x x ...", i.e. many sequences where `(.*?)\s*\z` looks like it may be able to match but actually can not.
I think writing an expression which has all the behavior we'd like without this backtracking issue isn't trivial (at least, I don't think I know how to do it offhand); just use a strategy based on "trim()" insetad, which avoids any PCRE complexities here.
Test Plan: Locally, this passes the "x x x ..." test which the previous code failed. I'm not including that test because it won't reproduce across values of "pcre.backtrac_limit", PCRE versions, etc.
Maniphest Tasks: T13554
Differential Revision: https://secure.phabricator.com/D21422
Summary: See PHI1819. This structure may have `null` elements.
Test Plan: Will confirm user reproduction case.
Differential Revision: https://secure.phabricator.com/D21420
Summary:
Ref T2495. See PHI1814. Currently, Phabricator replaces tabs with spaces when rendering diffs.
This may or may not be the best behavior in the long term, but it gives us more control over expansion of tabs than using tab literals.
However, one downside is that you can use your mouse cursor to select "half a tab", and can't use your mouse cursor to distinguish between tabs and spaces. Although you probably shouldn't be doing this, this behavior is less accurate/correct than selecting the entire block as a single unit.
A specific correctness issue with this behavior is that the entire block is copied to the clipboard as a tab literal if you select any of it, so two different visual selection ranges can produce the same clipboard content.
This particular behavior can be improved with "user-select: all", to instruct browsers to select the entire element as a single logical element. Now, selecting part of the tab selects the whole thing, as though it were really a tab literal.
(Some future change might abandon this approach and opt to use real tab literals with "tab-size" CSS, but we lose some ability to control alignment behavior if we do that and it doesn't have any obvious advantages over this approach other than cursor selection behavior.)
Test Plan:
- In Safari and Firefox, dragged text to select a whitespace-expanded tab literal. Saw browsers select the whole sequence as though it were a single tab.
- In Chorme, this also mostly works, but there's some glitchiness and flickering. I think this is still a net improvement, it's just not as smooth as Safari and Firefox.
Maniphest Tasks: T2495
Differential Revision: https://secure.phabricator.com/D21419
Summary:
See PHI1810. In situations where:
- An author submits an urgent change for review.
- The author pings reviewers to ask them to look at it.
...the reviewers may not be able to move the review forward if the review is currently a "Draft". They can only "Commandeer" or ask the author to "Request Review" as ways forward.
Although I'm hesitant to support review actions (particularly, "Accept") on draft revisions, I think there's no harm in allowing reviewers to skip tests and promote the revision out of draft as an explicit action.
Additionally, lightly specialize some of the transaction strings to distinguish between "request review from draft" and other state transitions.
Test Plan:
- As an author, used "Request Review" to promote a draft and to return a change to reviewers for consideration. These behaviors are unchanged, except "promote a draft" has different timeline text.
- As a non-author, used "Begin Review" to promote a draft.
Differential Revision: https://secure.phabricator.com/D21403
Summary:
Currently, adding subscribers to a draft revision raises a warning that they won't get an email/notification.
This warning has some false positives:
- it triggers on any subscriber change, including removing subscribers; and
- it triggers if you're only adding yourself as a subscriber.
Narrow the scope of the warning so it is raised only if you're adding a subscriber other than yourself.
Test Plan:
- Added a non-self subscriber, got the warning as before.
- Added self as a subscriber, no warning (previously: warning).
- Removed a subscriber, no warning (previously: warning).
Differential Revision: https://secure.phabricator.com/D21402
Summary:
See PHI1810. Build toward support for "Request Review" by non-authors on drafts, to forcefully pull a revision out of draft.
Currently, some action strings can't vary based on revision state or the current viewer, so this "pull out of draft" action would have to either: say "Request Review"; or be a totally separate action.
Neither seem great, so allow the labels and messages to vary based on the viewer and revision state.
Test Plan: Grepped for affected symbols, see followup changes.
Differential Revision: https://secure.phabricator.com/D21401
Summary:
Modern Mercurial may emit some more patterns under "--debug".
This whole list is gross and can likely now be eliminated by increasing the minimum required Mercurial version (as `arc` has), but just paper over it for now.
Test Plan:
Locally, saw some views return to functional behavior that weren't previously working on a modern version of Mercurial.
The reproduction case is likely something in the vein of "repository is not writable by webserver, look at history view".
Differential Revision: https://secure.phabricator.com/D21398
Summary:
See PHI1809. This query may join the "slug" table, but each project may have multiple slugs, and the query does not "GROUP BY" when this join occurs.
This may lead to partial result sets and unusual paging behavior.
This could likely be caught categorically in `loadAllFromArray()`; I'll adjust this in a followup.
Test Plan:
A minimal reproduction case is something like:
- Give project P slugs: a, b, c.
- Give project Q slugs: d.
- Query for slugs: a, b, c, d; with limit 2.
- Order the query so P returns first.
- Expect: P and Q.
- Actual: P generates 3 raw rows and the final result is just P with no pagination cursor.
Differential Revision: https://secure.phabricator.com/D21399
Summary:
A handful of Phacility production shards have run into memory pressure issues recently. Although there's no smoking gun, and at least two other plausible contributors, one possible concern is that the Fact daemon was written before hibernation and can not currently hibernate. Even if there's no memory leak, this creates unnecessary memory pressure by holding the processes in memory.
Allow the Fact daemon to hibernate, like other daemons do.
Test Plan: Ran "bin/phd debug fact", saw the Fact daemon hibernate.
Subscribers: yelirekim
Differential Revision: https://secure.phabricator.com/D21389
Summary: Ref T13546. Companion change to D21372. Move URI normalization code to Arcanist to we can more-often resolve remote URIs correctly.
Test Plan: Grepped for affected symbols.
Maniphest Tasks: T13546
Differential Revision: https://secure.phabricator.com/D21373
Summary:
Ref PHI1798. If you put an SSH public key in a table cell with monospaced formatting and then print the table, the cell scrolls and not all of the content appears in your physical printed document.
Generally, the current scrolling behavior for monospaced text seems never-desirable: I can't imagine any cases where we want the table cell to scroll. (There's more of an argument for complex cases where a table cell has, say, an embedded paste.)
Add `line-break: anywhere` to break monospaced text inside these cells.
Test Plan: In Safari, Firefox, and Chrome, viewed a ##|`MMMMM....`|## table. Saw scrolling before and wrapping/breaking after.
Differential Revision: https://secure.phabricator.com/D21370
Summary:
See PHI1794, which describes a connection exhaustion issue with a large number of webhook tasks in queue.
The "GlobalLock" mechanism manages a separate connection pool from the main pool, and webhook workers immediately try to grab a webhook lock with a 0-second wait when they start. So far, this is fine.
Prior to this change, good connections which fail to acqiure a lock are discarded. This can lead to connection exhaustion as the worker rapidly cycles through lock attempts: the connections will remain open for at least 60 seconds (since D16389) in an effort to avoid outbound port exhaustion, but they're effectively orphaned because they aren't part of the main pool and aren't part of the lock pool. We're basically leaking a connection every time we fail to lock.
Failing to lock doesn't mean we need to discard the connection: it's a completely suitable connection for reuse. Instead of dropping it on the floor, put it into the lock pool.
Test Plan:
- Used "bin/webhook call ... --count 10000 --background" to queue a large number of webhook calls against a slow ("sleep(15);") webhook.
- Used "bin/phd launch 32 taskmaster" to start taskmasters.
- Observed MySQL connection behavior:
- Before change: 2048 configured connections immediately exhausted.
- After change: connections stable at ~160ish.
- Ran queue for a while, saw expected single-threaded calls to webhook.
Differential Revision: https://secure.phabricator.com/D21369
Summary:
See PHI1794, which reports an issue where a large number of queued webhook calls led to connection exhaustion. To make this easier to reproduce and test, add "--count" and "--background" flags to "bin/webhook call".
This primarily supports "bin/webook call ... --background --count 10000" to quickly fill the queue with a bunch of calls.
Test Plan: Ran `bin/webhook call` in foreground and background modes, with and without counts. Saw appropriate console and queue behavior.
Differential Revision: https://secure.phabricator.com/D21368
Summary: See PHI1784. Currently, users who pass an invalid SSH command to Phabricator's SSH handler get an unhelpful error message. Make it more helpful.
Test Plan: Ran `./bin/ssh-exec` with no arguments (old, helpful error), invalid arguments (before: unhelpful error; after: helpful error), and valid arguments (old, helpful behavior).
Differential Revision: https://secure.phabricator.com/D21362
Summary:
The "Export Data" workflow incorrectly uses the "Policy Favorites" setting to choose a default export format. This is just a copy/paste error; the correct setting exists and is unused.
If the setting value is an array (as the "Policy Favorites" value often is), we try to use it as an array index. This generates a runtime exception after D21044.
```
[2020-06-16 06:32:12] EXCEPTION: (RuntimeException) Illegal offset type in isset or empty at [<arcanist>/src/error/PhutilErrorHandler.php:263]
#0 <#2> PhutilErrorHandler::handleError(integer, string, string, integer, array) called at [<phabricator>/src/applications/search/controller/PhabricatorApplicationSearchController.php:460]
```
- Use the correct setting.
- Make sure the value we read is a string.
Test Plan:
- Used "Export Data" with a nonempty, array-valued "Policy Favorites" setting.
- Before: runtime exception.
- After: clean export.
- Used "Export Data" again, saw my selection from the first time persisted.
Differential Revision: https://secure.phabricator.com/D21361
Summary: Ref T13546. This makes some "arc" tasks a little easier, and will make them more correct if "arc" ever switches to using SSH.
Test Plan: Ran "harbormaster.buildable.search" from the web UI, saw URIs in the result set.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13546
Differential Revision: https://secure.phabricator.com/D21346
Summary:
See <https://discourse.phabricator-community.org/t/bad-regex-in-prose-diff-logic/3969>.
The prose splitting rules normally guarantee that newlines appear only at the beginning or end of blocks. However, if a prose sentence ends with text like "...x\n.", we can end up with a newline inside a "sentence".
If we do, the regular expression that breaks it into pieces will fail.
Arguably, this is an error in how sentences are split apart (we might prefer to split this into two sentences, "x\n" and ".", rather than a single "x\n." sentence) but in the general case it's not unreasonable for blocks to contain newlines, so a simple fix is to make the pattern more robust.
Test Plan: Added a failing test which includes this behavior, made it pass.
Differential Revision: https://secure.phabricator.com/D21295
Summary:
Currently, Phortune attempts to prevent users from removing themselves as account managers. It does this by checking that the new list includes them.
Usually this is sufficient, because you can't normally edit an account unless you're already a manager. However, we get the wrong result (incorrect rejection of the edit) if the actor is omnipotent and the acting user was not already a member.
It's okay to edit an account into a state which doesn't include you if you have permission to edit the account and aren't already a manager.
Specifically, this supports more formal tooling around staff modifications to billing accounts, where the actor has staff-omnipotence and the acting user is a staff member and only used for purposes of leaving a useful audit trail.
Test Plan: Elsewhere, ran staff tooling to modify accounts and was able to act as "alice" to add "bailey", even though "alice" was not herself a manager.
Differential Revision: https://secure.phabricator.com/D21288
Summary:
Ref T13513. An inline is not considered empty if it has a suggestion, but some of the shared transaction code doesn't test for this properly.
Update the shared transaction code to be aware that application comments may have more complex emptiness rules.
Test Plan:
- Posted an inline with only an edit suggestion, comment went through.
- Tried to post a normal empty comment, got an appropriate warning.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21287
Summary: See PHI1753. This condition got rewritten for suggested edits and accidentally inverted.
Test Plan:
- Create a comment, type text, save draft, edit comment, cancel.
- Before: comment hides itself.
- After: comment properly cancels into pre-edit draft state.
Differential Revision: https://secure.phabricator.com/D21286
Summary:
Ref T13541. The passthru future does not have time limit behavior, so if we reach this code we currently fail.
Phabricator never reaches this code normally, but this code is reachable during debugging if you try to foreground a slow fetch to inspect it.
Passthru commands generally only make sense to run interactively, and the caller or control script can enforce their own timeouts (usually by pressing "^C" with their fingers).
Test Plan: Used a debugging script to run ref-by-ref fetches in the foreground.
Maniphest Tasks: T13541
Differential Revision: https://secure.phabricator.com/D21284
Summary:
See PHI1752.
- Early exit of document layout can cause us to fail to populate available rows.
- Some Jupyter documents have "markdown" cells with plain strings, apparently.
Test Plan: Successfully rendered example diff from PHI1752.
Differential Revision: https://secure.phabricator.com/D21285
Summary: Ref T13513. When a revision has inlines with edit suggestions, pressing "j" and "k" can incorrectly select the blocks inside the diffs inside the inlines.
Test Plan: Used "j" to cycle through changes in a revision with inline comments with edit suggestions, didn't get jumped into the suggestion diffs.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21283
Summary:
Ref PHI1749. Instead of opening files to the last unchanged line on either side of the change, open files to the "simple" line number of the selected block.
For inlines, this is the inline line number.
For blocks, this is the first new-file line number, or the first old-file line number if no new-file line number exists in the block.
This may not always be what the user is hoping for (we can't know what the state of their working copy is) but should produce more obvious behavior.
Test Plan:
- In Diffusion, used "Open in Editor" with and without line selections. Saw same behavior as before.
- Used "n" and "r" to leave an inline with the keyboard, saw same behavior as before.
- Used "\" and "Open in Editor" menu item to open a file with:
- Nothing selected or changeset selected (line: 1).
- An inline selected (line: inline line).
- A block selected (line: first line in block, per above).
Differential Revision: https://secure.phabricator.com/D21282
Summary: Ref T13276. Ref T13513. All readers and writers were removed more than a year ago; clean up the last remnants of this table.
Test Plan: Grepped for table references, found none.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13513, T13276
Differential Revision: https://secure.phabricator.com/D21281
Summary:
Ref T13513. Syntax highlighting is potentially expensive, and the changeset rendering pipeline can cache it. However, the cache is currently keyed ONLY by Differential changeset ID.
Destroy the existing cache and rebuild it with a more standard cache key so it can be used in a more ad-hoc way by inline suggestion snippets.
Test Plan: Used Darkconsole, saw cache hits and no more inline syntax highlighting for changesets with many inlines.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21280
Summary: Ref T13513. Inline comment context information is somewhat expensive to construct and can be cached. Add a readthrough cache on top of it.
Test Plan: Loaded a source code changeset with many inline comments, used Darkconsole to inspect query activity. Saw caches get populated. Updated cache key, saw caches regenerate. Browsed Diffusion, nothing looked broken.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21279
Summary: Ref T13513. For now, I'm not supporting inline edit suggestions in Diffusion, although it's likely not difficult to do so in the future. Clean up some of the code so that plain ol' inlines work the same way they did before.
Test Plan:
- Created, edited, reloaded, submitted inlines in Diffusion: familiar old behavior.
- Created, edited, reloaded, submitted inlines with suggestions in Differential: familiar new behavior.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21278
Summary: Ref T13513. When rendering an inline suggestion for display, use highlighting and diffing.
Test Plan: {F7495053}
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21277
Summary:
Ref T13513. This still has quite a few rough edges and some significant performance isssues, but appears to mostly work.
Allow reviewers to "Suggest Edit" on an inline comment and provide replacement text for the highlighted source.
Test Plan: Created, edited, reloaded, and submitted inline comments in various states with and without suggestion text.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21276
Summary: Ref T13513. Introduce a formal server-side content state object so the whole state can be saved and restored to the drafts table, read from the request, etc.
Test Plan: Created and edited inlines. Reloaded drafts with edits. Submitted normal and editing comments. Grepped for affected symbols.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21275
Summary:
Ref T13513. If your 10 most recently authored inlines have all been deleted, these queries can fail by overheating. This is silly and probably rarely happens outside of development.
For now, just let them overheat. This may create a false negative (incorrect "no draft" signal when the real condition is "drafts, but 10 most recent comments were deleted"). This could be sorted out later with a query mode like "executeAny()", perhaps.
Test Plan:
- Created and deleted 10 inlines.
- Submitted comments.
- Before: overheating fatal during draft flag generation.
- After: clean submission.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21274
Summary:
Ref T13513. Currently, all the inline code passes around strings to describe content. I plan to add background music, animation effects, etc., soon. To prepare for this change, make content a state object.
This does not change any user-visible behavior, it just prepares for content to become more complicated than a single string.
Test Plan: Created, edited, submitted, cancelled, etc., comments.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21273
Summary:
See <https://discourse.phabricator-community.org/t/how-to-override-localhost-localdomain-in-email-message-id/3876/>.
Currently, Phabricator generates a "Message-ID" only in a subset of cases (roughly: when the message is first-in-thread and we expect the thread may have more than one message).
In cases where it does not generate a message ID, it expects the SMTP server to generate one for it. Servers will generally do this, and some ONLY do this (that is, they ignore IDs from Phabricator and replace them). Thus, several pieces of configuration control whether Phabricator attempts to generate a "Message-ID" at all.
The PHPMailer code has fallback behavior which generates a "<random>@localhost.localdomain" message ID. This is never desirable and ignores Phabricator-level configuration that Message IDs should not be generated.
For now, remove this code: it is never the desired behavior and sometimes explicitly contradicts the intent of configuration.
Possibly, a better change may be to make Phabricator always generate a message ID in cases where it isn't forbidden from doing so by configuration. However, that's a more complicated change and it's not clear if/when it would produce better behavior, so start here for now.
Test Plan: Confirmed by affected user (see linked thread).
Differential Revision: https://secure.phabricator.com/D21272
Summary: See PHI1745. Under PHP7, errors raised as Throwable miss this "generic exception" logic and don't increment their failure count. Instead, treat any "Throwable" we don't recognize like any "Exception" we don't recognize.
Test Plan:
- Under PHP7, caused a worker task to raise a Throwable (e.g., call to undefined method, see D21270).
- Ran `bin/worker execute --id ...`.
- Before: worker failed, but did not increment failure count.
- After: worker fails and increments failure count as it would for other types of unknown error.
Differential Revision: https://secure.phabricator.com/D21271
Summary: See PHI1745. This callsite for "ChangesetParser" was not properly updated for recent changes.
Test Plan:
- Set `metamta.differential.inline-patches` to 100.
- Created a new revision with a small (<100 line) diff, with at least one reviewer.
- Ran `bin/phd debug` and observed outbound mail queue with `bin/mail list-outbound`.
- Before: fatal when trying to generate the inline changes for mail.
- After: clean mail generation.
Differential Revision: https://secure.phabricator.com/D21270
Summary: See PHI1743. If a build has no initiator PHID, the rendering pathway incorrectly tries to access a handle for it anyway.
Test Plan:
- Set a build to have no initiator PHID.
- Viewed the build plan for the build.
- Before: fatal when trying to access the `null` handle.
- After: clean build plan rendering.
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Differential Revision: https://secure.phabricator.com/D21269
Summary: Ref T13513. The code which added "r" and "R" to the inline menu accidentally discarded the difference between the keystrokes.
Test Plan:
- Clicked an inline, pressed "r", got new empty inline (previously: inline with quote).
- Clicked an inline, pressed "R", got a new quoted inline.
- Repeated steps with the menu items, got the expected behaviors.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21268
Summary:
Fixes T13539. See that task for discussion and a reproduction case.
This algorithm currently counts "\ No newline at end of file" lines as though they were normal source lines. This can cause offset issues in the rare case that a diff contains two of these lines (for each side of the file) and has changes between them (because the last line of the file was modified between the diffs).
Instead, don't count "\" as a display line.
Test Plan:
- See T13539 and PHI1740.
- Before: got fatals on the "wild" diff and the synthetic simplified version.
- After: clean intradiff rendering in both cases.
Maniphest Tasks: T13539
Differential Revision: https://secure.phabricator.com/D21267
Summary:
Ref T13538. See PHI1739. Synthetic Git commits with no author and/or no commit message currently extract `null` and then fail to parse.
Ideally, we would carefully distinguish between `null` and empty string. In practice, that requires significant schema changes (these columns are non-nullable and have indexing requirements) and these cases are degenerate. These commits are challenging to build and can not normally be constructed with `git commit`.
At least for now, merge the `null` cases into the empty string cases so we can survive import.
Test Plan:
- Constructed a commit with no author and no commit message using the approach described in T13538; pushed and parsed it.
- Before: fatals during identity selection and storing the commit message (both roughly NULL inserts into non-null columns).
- After: clean import.
This produces a less-than-ideal UI in Diffusion, but it doesn't break anything:
{F7492094}
Maniphest Tasks: T13538
Differential Revision: https://secure.phabricator.com/D21266
Summary:
Fixes T13536. See that task for discussion.
Older versions of MySQL (roughly, prior to 8.0.19) emit "int(10)" types. Newer versions emit "int" types. Accept these as equivalent.
Test Plan: Ran `bin/storage upgrade --force` against MySQL 8.0.11 and 8.0.20. Got clean adjustment lists on both versions.
Maniphest Tasks: T13536
Differential Revision: https://secure.phabricator.com/D21265
Summary: On the "New User" web workflow, if you use an invalid email address, you get a failure with an empty message.
Test Plan:
- Before: Tried to create a new user with address "asdf". Got no specific guidance.
- After: Got specific guidance about email address formatting and length.
Differential Revision: https://secure.phabricator.com/D21264
Summary: Ref T13513. On `secure`, I caught an issue where inlines may be accessed directly before they're constructed. Instead, access them through the relevant accessor.
Test Plan: Will deploy.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21263
Summary:
Ref T13513. The on-hover-inline reticle has switched over to have cell-based behavior. Switch the on-hover-line-number reticle to use the same behavior.
Also, clean up the dirty/redraw loop slightly: we no longer need to dirty on resize, and we don't need to redraw if the range isn't actually dirty.
Test Plan: Highlighted lines and line ranges. Hovered over inlines.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21262
Summary:
Ref T13513. See PHI1734, which raises a concern about the performance of large revisions near the 100-change threshold.
Currently, `getInlines()` is called whenever the scroll position transitions between two changesets, and it performs a relatively complicated DOM scan to lift inlines out of the document.
This shows up as taking a small but nontrivial amount of time in Firefox profiles and should be safely memoizable.
Test Plan:
- Under Firefox profiling, scrolled through a large revision.
- Before change: `getInlines()` appeared as the highest-cost thing we're explicitly doing on profiles.
- After change: `getInlines()` was no longer meaningfully represented on profiles.
- Created inlines, edited inlines, etc. Didn't identify any broken behavior.
Maniphest Tasks: T13513
Differential Revision: https://secure.phabricator.com/D21261
