Because of how we output lines in the loop above, if we leave that loop
when the last line was not the same in both files, then either
`file1_line` or `file2_line` has not been output yet.
`process_remaining()` does not print that line either, since it
immediately reads a new line. So, output the previously-missing line
before we call that. :^)
These are based on the ones in Firefox:
`$(selector, element = document)`:
Equivalent to `element.querySelector(selector)`.
`$$(selector, element = document)`:
Equivalent to `element.querySelectorAll(selector)`.
This holds the return value of the expression that was last entered into
the browser console. If that last expression returned an error of some
kind, `$_` will be `undefined`. This matches the behaviour in Firefox.
This allows us to expose extra functions and properties to the console,
such as `$0`, without them being available to website scripts.
`ConsoleEnvironmentSettingsObject` is basically a stub, since we require
an `EnvironmentSettingsObject` but it has abstract methods.
If the page's URL is changed from within the WebContent process (e.g.
window.location.href is set from JavaScript, or a navigation is started
from WebDriver), we would not store the URL at all within OOPWV. This
prevented actions like reloading from working properly, as the browser
would reload whatever URL was previously entered in the URL box.
Two Blocking modals in the same modal chain which aren't descended
one from the other will block each other's input rendering the chain
noninteractive. This has caused confusion in the past for builders so
this warning makes the behavior explicitly forbidden.
This was causing a slight delay when opening ComboBox ListViews.
As an easy first optimization, don't bother computing this at all
for frameless windows and those not type Normal.
Makes the Audio applet, Taskbar clock, CommandPalette, EmojiPicker,
and Assistant work as Popup windows. Popups are frameless, unmovable,
and unresizable by default, in addition to their preemptive function.
Also sets Assistant not to obey widget min size so its search result
area resizes correctly
and the CaptureInput mode. They are a source of unneeded complexity
in WindowServer and have proven prone to regressions, so this patch
replaces them with a simple input preemption scheme using Popups.
Popup windows now have ergonomics similar to menus: When open,
a popup preempts all mouse and key events for the entire window
stack; however, they are fragile and will close after WindowServer
swallows the first event outside them. This is similar to how combo
box windows and popups work in the classic Windows DE and has the
added benefit of letting the user click anywhere to dismiss a popup
without having to worry about unwanted interactions with other
widgets.
