Commit Graph

210 Commits

Author SHA1 Message Date
Anders Kaseorg 583febeffd js: Convert static/js/user_status.js to ES6 module.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2021-02-10 10:27:14 -08:00
Anders Kaseorg 229aacb819 js: Convert static/js/user_search.js to ES6 module.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2021-02-10 10:27:14 -08:00
Steve Howell 016038dcd1 blueslip: Add measure_time wrapper.
Now when we want to measure how long a block
of code takes to execute, we just wrap it with
`blueslip.measure_time`, instead of the awkward
idiom from my original commit of getting a callback
function.

My rationale for the original scheme was that I
wanted to minimize diffs and avoid changing
`const` to `let` in a few cases, but I believe
now that the function wrapper is nicer.

In a few cases I just removed the blueslip timing
code, since I was able to confirm on czo that
the times were pretty minimal.
2021-02-03 15:23:17 -08:00
Aman Agrawal fbf7cb82a7 web_public_guest: Rename to web_public_visitor for clarity.
Using web_public_guest for anonymous users is confusing since
'guest' is actually a logged-in user compared to
web_public_guest which is not logged-in and has only
read access to messages. So, we rename it to
web_public_visitor.
2020-10-13 16:59:52 -07:00
Anders Kaseorg d72423ef21 eslint: Replace empty-returns with consistent-return.
Instead of prohibiting ‘return undefined’ (#8669), we require that a
function must return an explicit value always or never.  This prevents
you from forgetting to return a value in some cases.  It will also be
important for TypeScript, which distinguishes between undefined and
void.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-09-25 15:17:59 -07:00
Anders Kaseorg 30d7090621 activity.js: Add setter for new_user_input.
After migration to an ES6 module, `new_user_input` would no longer be
mutable from outside the module.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2020-09-25 15:12:24 -07:00
Aman Agrawal a8350ebd63 events: Disable events or presence for web-public guest. 2020-09-21 16:07:40 -07:00
Priyank Patel b7998d3160 js: Purge people module from window. 2020-09-01 19:55:58 -07:00
Anders Kaseorg 6ec808b8df js: Add "use strict" directive to CommonJS files.
ES and TypeScript modules are strict by default and don’t need this
directive.  ESLint will remind us to add it to new CommonJS files and
remove it from ES and TypeScript modules.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-31 22:09:46 -07:00
Anders Kaseorg 2e94914be4 list_cursor: Convert list_cursor to an ES6 class ListCursor.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-26 17:00:05 -07:00
Anders Kaseorg d2520cd7e0 js: Replace underscore with lodash and remove it from globals.
Tweaked by tabbott to bump PROVISION_VERSION.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-26 16:12:06 -07:00
Anders Kaseorg f96bd3839c user_search: Convert user_search to an ES6 class UserSearch.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-24 16:50:23 -07:00
Anders Kaseorg 96dcc0ce6e js: Use ES6 object literal shorthand syntax.
Generated by ESLint.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-21 12:42:22 -07:00
Anders Kaseorg 4e42137bd9 js: Replace deprecated jQuery event handler shorthand.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-21 12:01:26 -07:00
Anders Kaseorg b65d2e063d js: Reformat with Prettier.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-17 14:31:25 -07:00
Anders Kaseorg f3726db89a js: Normalize strings to double quotes.
Prettier would do this anyway, but it’s separated out for a more
reviewable diff.  Generated by ESLint.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-17 14:31:24 -07:00
Anders Kaseorg a79322bc94 eslint: Enable prefer-arrow-callback.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-07-03 16:55:50 -07:00
Steve Howell 43e5b2d28b right sidebar: Remove "GROUP PMs" section.
We remove the "GROUP PMs" section that used
to be in the lower right sidebar.

Most of this is straightforward code removal.

A couple quick notes:

    - The message fetching code now just
      calls `huddle_data.process_loaded_messages`,
      which we still need for search suggestions.
      We removed `activity.process_loaded_messages`.

    - The `huddle_data.process_loaded_messages`
      function no longer needs to return `need_resize`.

    - In `resize.js` we now just calculate
      `res.buddy_list_wrapper_max_height` directly
      from `usable_height`.
2020-05-27 17:57:50 -07:00
Steve Howell e040721090 refactor: Extract huddle_data.js.
This makes it so that search_suggestion.js
does not depend on activity.js.

That dependency hasn't really been "elegant"
for quite some time, but it will become particularly
unnecessary when we go to remove the "Group PMs"
section from the right sidebar.

This commit introduces a temporary wart
where we have these two functions with the
same name in a sort of unnecessarily
complicated code stack:

    activity.process_loaded_messages
    huddle_data.process_loaded_messages

But we will eliminate the former function
very soon, and our message-related codepaths
will just call the `huddle_data` version
directly.

TESTING NOTES:

Now that `huddle_data` is a tiny leaf
module, it's super easy to just use the
real implementation of what was formerly
called `activity.get_huddles()` (and is
now in `huddle_data`).

When I first wrote this commit, introducing
the real implementation of `get_huddles` exposed
some bugs that I fixed in the immediately
prior commits to this.

When the tests were originally written,
I believe `activity.js` had some annoying
`jQuery` dependencies that made it hard
to unit test against.  We've slimmed it over
time to be mostly just a "controller" module.
But even in its current state it would have
been a bit of a bloated dependency.

The other friction for using the actual
version of `get_huddles` was setting up
the message data, but that's pretty minor.
2020-05-26 21:26:11 -07:00
Anders Kaseorg e701f20861 electron_bridge: Use getter and setter interface to mutable properties.
This exists in all versions of the desktop app that we still support,
and will eventually let us delete a bit of annoying compatibility code
from the desktop app’s injected JavaScript.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-04-26 23:02:05 -07:00
Anders Kaseorg 2868b7c3e3 dict: Replace with Map.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-25 15:37:37 -08:00
Tim Abbott c2f132b8d5 channel: Don't send outgoing HTTP requests during a reload.
This generalizes existing code for the presence code path that is
generically useful for avoiding useless work that will be discarded.

We make an exception for the one type of request that needs to happen
while reloading, namely the one to clean up our event queue.
2020-02-13 15:45:39 -08:00
Tim Abbott e2892a88c1 channel: Discard all HTTP responses while reloading.
We used to have a block of code doing this just in the presence
endpoint because that's where we'd had error-handling problems with it
not being present, but it seems more correct for it to run
unconditionally on all HTTP requests.

This requires adding a dependency of channel on reload_state, which we
record in the webpack configuration for now.
2020-02-13 15:45:39 -08:00
Tim Abbott e20656e02a activity: Move check_for_unsuspend check to right place.
The actual goal we have is that suspect_offline is correct so that we
can rely on that field when determining how to do error handling in
the presence system.
2020-02-13 15:45:39 -08:00
Tim Abbott 3f76124c6c activity: Ignore presence responses when trying to reload.
This avoids risk of logging blueslip errors for user IDs seen in the
presence response that we haven't heard about from the server_events
system because we're offline and in the process of reloading.

The issue only affected large realms; see
02bc630881 and `git log
-Ssuspect_offline` for details.
2020-02-13 11:47:51 -08:00
Steve Howell 14396c3e32 presence: Prep for upcoming changes to server data.
In the next commit we're going to change what the
server sends for the following:

    - page_params
    - server responses to /json/users/me/presence

We will **not** yet be changing the format of the data
that we get in events when users update their presence.

It's also just a bit in flux what our final formats
will be for various presence payloads, and different
optimizations may lead us to use different data
structures in different payloads.

So for now we decouple these two things:

    raw_info: this is intended to represent a
        snapshot of the latest data from the
        server, including some data like
        timestamps that are only used
        in downstream calculations and not
        user-facing

    exports.presence_info: this is calculated
        info for modules like buddy_data that
        just need to know active vs. idle and
        last_active_date

Another change that happens here is we rename
set_info_for_user to update_info_for_event,
which just makes it clear that the function
expects data in the "event" format (as opposed
to the format for page_params or server
responses).

As of now keeping the intermediate raw_info data
around feels slightly awkward, because we just
immediately calculate presence_info for any kind
of update.  This may be sorta surprising if you
just skim the code and see the various timeout
constants.  You would think we might be automatically
expiring "active" statuses in the client due to
the simple passage of time, but in fact the precise
places we do this are all triggered by new data
from the server and we re-calculate statuses
immediately.

(There are indirect ways that clients
have timing logic, since they ask the
server for new data at various intervals, but a
smarter client could simply expire users on its
own, or at least with a more efficient transfer
of info between it and the server. One of
the thing that complicates client-side logic
is that server and client clocks may be out
of sync.  Also, it's not inherently super expensive
to get updates from the server.)
2020-02-10 14:37:44 -08:00
Steve Howell 75dbc4a2b1 presence: Extract presence.initialize(). 2020-02-10 14:37:44 -08:00
Anders Kaseorg ac7b09d57e js: Convert _.map(a, …) to a.map(…).
And convert the corresponding function expressions to arrow style
while we’re here.

import * as babelParser from "recast/parsers/babel";
import * as recast from "recast";
import * as tsParser from "recast/parsers/typescript";
import { builders as b, namedTypes as n } from "ast-types";
import K from "ast-types/gen/kinds";
import fs from "fs";
import path from "path";
import process from "process";

const checkExpression = (node: n.Node): node is K.ExpressionKind =>
  n.Expression.check(node);

for (const file of process.argv.slice(2)) {
  console.log("Parsing", file);
  const ast = recast.parse(fs.readFileSync(file, { encoding: "utf8" }), {
    parser: path.extname(file) === ".ts" ? tsParser : babelParser,
  });
  let changed = false;

  recast.visit(ast, {
    visitCallExpression(path) {
      const { callee, arguments: args } = path.node;
      if (
        n.MemberExpression.check(callee) &&
        !callee.computed &&
        n.Identifier.check(callee.object) &&
        callee.object.name === "_" &&
        n.Identifier.check(callee.property) &&
        callee.property.name === "map" &&
        args.length === 2 &&
        checkExpression(args[0]) &&
        checkExpression(args[1])
      ) {
        const [arr, fn] = args;
        path.replace(
          b.callExpression(b.memberExpression(arr, b.identifier("map")), [
            n.FunctionExpression.check(fn) ||
            n.ArrowFunctionExpression.check(fn)
              ? b.arrowFunctionExpression(
                  fn.params,
                  n.BlockStatement.check(fn.body) &&
                    fn.body.body.length === 1 &&
                    n.ReturnStatement.check(fn.body.body[0])
                    ? fn.body.body[0].argument || b.identifier("undefined")
                    : fn.body
                )
              : fn,
          ])
        );
        changed = true;
      }
      this.traverse(path);
    },
  });

  if (changed) {
    console.log("Writing", file);
    fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
  }
}

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-10 14:08:12 -08:00
Anders Kaseorg 719546641f js: Convert a.indexOf(…) !== -1 to a.includes(…).
Babel polyfills this for us for Internet Explorer.

import * as babelParser from "recast/parsers/babel";
import * as recast from "recast";
import * as tsParser from "recast/parsers/typescript";
import { builders as b, namedTypes as n } from "ast-types";
import K from "ast-types/gen/kinds";
import fs from "fs";
import path from "path";
import process from "process";

const checkExpression = (node: n.Node): node is K.ExpressionKind =>
  n.Expression.check(node);

for (const file of process.argv.slice(2)) {
  console.log("Parsing", file);
  const ast = recast.parse(fs.readFileSync(file, { encoding: "utf8" }), {
    parser: path.extname(file) === ".ts" ? tsParser : babelParser,
  });
  let changed = false;

  recast.visit(ast, {
    visitBinaryExpression(path) {
      const { operator, left, right } = path.node;
      if (
        n.CallExpression.check(left) &&
        n.MemberExpression.check(left.callee) &&
        !left.callee.computed &&
        n.Identifier.check(left.callee.property) &&
        left.callee.property.name === "indexOf" &&
        left.arguments.length === 1 &&
        checkExpression(left.arguments[0]) &&
        ((["===", "!==", "==", "!=", ">", "<="].includes(operator) &&
          n.UnaryExpression.check(right) &&
          right.operator == "-" &&
          n.Literal.check(right.argument) &&
          right.argument.value === 1) ||
          ([">=", "<"].includes(operator) &&
            n.Literal.check(right) &&
            right.value === 0))
      ) {
        const test = b.callExpression(
          b.memberExpression(left.callee.object, b.identifier("includes")),
          [left.arguments[0]]
        );
        path.replace(
          ["!==", "!=", ">", ">="].includes(operator)
            ? test
            : b.unaryExpression("!", test)
        );
        changed = true;
      }
      this.traverse(path);
    },
  });

  if (changed) {
    console.log("Writing", file);
    fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
  }
}

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-10 14:08:12 -08:00
Anders Kaseorg 02511bff1c js: Automatically convert _.each to for…of.
This commit was automatically generated by the following script,
followed by lint --fix and a few small manual lint-related cleanups.

import * as babelParser from "recast/parsers/babel";
import * as recast from "recast";
import * as tsParser from "recast/parsers/typescript";
import { builders as b, namedTypes as n } from "ast-types";
import { Context } from "ast-types/lib/path-visitor";
import K from "ast-types/gen/kinds";
import { NodePath } from "ast-types/lib/node-path";
import assert from "assert";
import fs from "fs";
import path from "path";
import process from "process";

const checkExpression = (node: n.Node): node is K.ExpressionKind =>
  n.Expression.check(node);
const checkStatement = (node: n.Node): node is K.StatementKind =>
  n.Statement.check(node);

for (const file of process.argv.slice(2)) {
  console.log("Parsing", file);
  const ast = recast.parse(fs.readFileSync(file, { encoding: "utf8" }), {
    parser: path.extname(file) === ".ts" ? tsParser : babelParser,
  });
  let changed = false;
  let inLoop = false;
  let replaceReturn = false;

  const visitLoop = (...args: string[]) =>
    function(this: Context, path: NodePath) {
      for (const arg of args) {
        this.visit(path.get(arg));
      }
      const old = { inLoop };
      inLoop = true;
      this.visit(path.get("body"));
      inLoop = old.inLoop;
      return false;
    };

  recast.visit(ast, {
    visitDoWhileStatement: visitLoop("test"),

    visitExpressionStatement(path) {
      const { expression, comments } = path.node;
      let valueOnly;
      if (
        n.CallExpression.check(expression) &&
        n.MemberExpression.check(expression.callee) &&
        !expression.callee.computed &&
        n.Identifier.check(expression.callee.object) &&
        expression.callee.object.name === "_" &&
        n.Identifier.check(expression.callee.property) &&
        ["each", "forEach"].includes(expression.callee.property.name) &&
        [2, 3].includes(expression.arguments.length) &&
        checkExpression(expression.arguments[0]) &&
        (n.FunctionExpression.check(expression.arguments[1]) ||
          n.ArrowFunctionExpression.check(expression.arguments[1])) &&
        [1, 2].includes(expression.arguments[1].params.length) &&
        n.Identifier.check(expression.arguments[1].params[0]) &&
        ((valueOnly = expression.arguments[1].params[1] === undefined) ||
          n.Identifier.check(expression.arguments[1].params[1])) &&
        (expression.arguments[2] === undefined ||
          n.ThisExpression.check(expression.arguments[2]))
      ) {
        const old = { inLoop, replaceReturn };
        inLoop = false;
        replaceReturn = true;
        this.visit(
          path
            .get("expression")
            .get("arguments")
            .get(1)
            .get("body")
        );
        inLoop = old.inLoop;
        replaceReturn = old.replaceReturn;

        const [right, { body, params }] = expression.arguments;
        const loop = b.forOfStatement(
          b.variableDeclaration("let", [
            b.variableDeclarator(
              valueOnly ? params[0] : b.arrayPattern([params[1], params[0]])
            ),
          ]),
          valueOnly
            ? right
            : b.callExpression(
                b.memberExpression(right, b.identifier("entries")),
                []
              ),
          checkStatement(body) ? body : b.expressionStatement(body)
        );
        loop.comments = comments;
        path.replace(loop);
        changed = true;
      }
      this.traverse(path);
    },

    visitForStatement: visitLoop("init", "test", "update"),

    visitForInStatement: visitLoop("left", "right"),

    visitForOfStatement: visitLoop("left", "right"),

    visitFunction(path) {
      this.visit(path.get("params"));
      const old = { replaceReturn };
      replaceReturn = false;
      this.visit(path.get("body"));
      replaceReturn = old.replaceReturn;
      return false;
    },

    visitReturnStatement(path) {
      if (replaceReturn) {
        assert(!inLoop); // could use labeled continue if this ever fires
        const { argument, comments } = path.node;
        if (argument === null) {
          const s = b.continueStatement();
          s.comments = comments;
          path.replace(s);
        } else {
          const s = b.expressionStatement(argument);
          s.comments = comments;
          path.replace(s, b.continueStatement());
        }
        return false;
      }
      this.traverse(path);
    },

    visitWhileStatement: visitLoop("test"),
  });

  if (changed) {
    console.log("Writing", file);
    fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
  }
}

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-07 14:09:47 -08:00
Steve Howell b8f01f9cda people: Rename method to get_by_user_id().
This name is consistent with:

    get_by_email()
    get_by_name()
2020-02-05 12:04:56 -08:00
Anders Kaseorg de3146c137 js: Replace [...x] with Array.from(x).
Babel strict generates more code for [...x] than you’d like, while
Babel loose mode assumes x is an array.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-05 11:52:52 -08:00
Steve Howell a672a00677 presence: Add user_id to presence event.
In a later commit, we will eliminate email for
clients who have set slim_presence as their
preference.
2020-02-04 12:30:36 -08:00
Steve Howell bf9144ff69 presence: Add slim_presence flag.
This flag affects page_params and the
payload you get back from POSTs to this
url:

    users/me/presence

The flag does not yet affect the
presence events that get sent to a
client.
2020-02-04 12:30:34 -08:00
Anders Kaseorg 4480963f5a dict: Remove each method.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-04 12:22:03 -08:00
Anders Kaseorg 45d3be5449 dict, lazy_set: Return an iterator from keys method.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-04 12:22:03 -08:00
Steve Howell 0aa9decd86 blueslip: Add feature to time common operations.
This is relatively unobtrusive, and we don't send
anything to the server.

But any user can now enter blueslip.timings in the
console to see a map of how long things take in
milliseconds.  We only record one timing per
event label (i.e. the most recent).

It's pretty easy to test this by just clicking
around.  For 300 users/streams most things are
fast except for:

    - initialize_everything
    - manage streams (render_subscriptions)

Both do lots of nontrivial work, although
"manage streams" is a bit surprising, since
we're only measuring how long to build the
HTML from the templates (whereas the real
time is probably browser rendering costs).
2020-01-15 12:01:16 -08:00
Steve Howell 7630b859c3 js: Use IntDict in people.js.
This required lots of manual testing:

    - search/navigate user presence
    - send PM and mention user
    - pay attention to compose fade
    - send stream msg and mention user
    - open Private Messages in top-left and click
    - test unread counts
    - invite user who already has account
    - search for users in search bar
    - check user settings
        - User Groups
        - Users
        - Deactivated Users
        - Bots
    - create a bot
    - mention user groups
    - send group PM then click on lower right
    - view/edit/create streams

If there are still pieces of code that don't convert
ids to ints, the code should still work but report
blueslip errors.

I try to mostly convert user_ids to ints in the callers,
since often the callers are dealing with small amounts
of data, like user ids from huddles.
2020-01-05 12:27:28 -08:00
Anders Kaseorg 28f3dfa284 js: Automatically convert var to let and const in most files.
This commit was originally automatically generated using `tools/lint
--only=eslint --fix`.  It was then modified by tabbott to contain only
changes to a set of files that are unlikely to result in significant
merge conflicts with any open pull request, excluding about 20 files.
His plan is to merge the remaining changes with more precise care,
potentially involving merging parts of conflicting pull requests
before running the `eslint --fix` operation.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-11-03 12:42:39 -08:00
Anders Kaseorg d17b577d0c js: Purge useless IIFEs.
With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2019-10-25 13:51:21 -07:00
Cynthia Lin a65007dde4 right sidebar: Ensure .user-with-count gets added to correct li element.
The count_span element is parented by a .selectable_sidebar_block element
which is parented by the li element that the class is supposed to be added
to. Thus, use the parents() jQuery method for locating the li parent so
that the class gets added to the correct element.
2019-07-16 11:33:02 -07:00
vsvipul e830853aee desktop-presence: Use system presence data from electron-bridge.
Combined with work in the desktop app, this makes it possible for the
desktop app to clearly indicate to other users whether the current
user is active on the system and thus would see a desktop
notification, not just whether they are active in the current Zulip
window.

Essentially rewritten by tabbott to add unit tests and consider the
desktop app data authoritative.
2019-07-13 11:21:22 -07:00
Anders Kaseorg db0b33842c templates: Replace templates.render with require calls.
This removes an unnecessary layer of indirection and allows webpack to
catch filename mistakes.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-07-12 21:11:14 -07:00
Tim Abbott 5c32e2ff49 popovers: Fix migration to popovers.hide_all_except_sidebars().
I'm not really sure how I missed this in the original commit.
2019-07-09 23:03:41 -07:00
Tim Abbott e59a49ade5 activity: Refactor logic for sending active status.
This is a preparatory refactor for extending this logic to interact
with the desktop app as well.
2019-06-28 18:06:31 -07:00
Tim Abbott 793524618b activity: Rename confusing focus_ping function.
This function sends presence to the server and gets the server's
presence data back; it has nothing to do with browser focus.
2019-06-28 18:06:31 -07:00
Tim Abbott 746206f071 activity: Rename has_focus to client_is_active.
This makes it a lot more clear what it actually means, which is not
directly related to whether the browser window is focused.
2019-06-28 18:06:30 -07:00
Tim Abbott 42d29d58a1 activity: Rename focus_lost/focus_gained functions.
These names were incorrect, as they made it sound like this feature
was about the browser window being focused, whereas they are in fact
about whether the user has accessed the browser window.
2019-06-28 17:50:32 -07:00
Anders Kaseorg 01613e71fb ui: Replace set_up_scrollbar with data-simplebar attribute.
With perfectScrollbar, we needed to call a function from JavaScript to
enable a scrollbar on a new element, but simplebar has a much simpler
default API one can do by using data-simplebar attributes in the HTML.

So we can delete all the scrollbar creation/deletion code.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-05-19 18:06:38 -07:00
Anders Kaseorg 141088586b Completely replace perfect-scrollbar with SimpleBar.
perfect-scrollbar replaces both the appearance and the behavior of the
scrollbar, and its emulated behavior will never feel native on most
platforms.  SimpleBar customizes the appearance while preserving the
native behavior.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2019-05-17 12:06:51 -07:00