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* SciTECO commands are implemented with immediate execution in mind.
Those commands that do need to execute immediately while a string
command is entered, can do so using StateExpectString::process().
For simplicity, the parser just assumed that every input character
should result in immediate execution (if the command supports it
of course).
* This lead to unnecessarily slow execution of commands like <I> or
<S> in batch mode. E.g. a search was always repeated for every
character of the pattern - a N character pattern could result in
N searches instead of one.
Also in interactive mode when executing a macro
or repeating commands in a loop, immediate processing of string arguments
is unnecessary and results in superfluous undo tokens.
* These cases are all optimized now by being informed about
the necessity of providing immediate feedback via State::refresh().
This is used by StateExpectString to defer calling process() as
long as possible.
* For states extending StateExpectString, there is no change since
they can already process arbitrarily long strings.
The optimization is hidden in StateExpectString.
* some allocations are now also avoided in StateExpectString::custom().
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* This is one of the most called functions (although a cheap one),
so having our own inline implementation speeds up things.
Benchmarks have shown that parsing is sped up by at least 4%.
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batch mode
* by using variadic templates, UndoStack::push() is now responsible
for allocating undo tokens. This is avoided in batch mode.
* The old UndoStack::push(UndoToken *) method has been made private
to avoid confusion around UndoStack's API.
The old UndoStack::push() no longer needs to handle !undo.enabled,
but at least asserts on it.
* C++11 support is now required, so variadic templates can be used.
This could have also been done using manual undo.enabled checks;
or using multiple versions of the template with different numbers
of template arguments.
The latter could be done if we one day have to support a non-C++11
compiler.
However since we're depending on GCC 4.4, variadic template use should
be OK.
Clang supports it since v2.9.
* Sometimes, undo token pushing passed ownership of some memory
to the undo token. The old behaviour was relied on to reclaim the
memory even in batch mode -- the undo token was always deleted.
To avoid leaks or repeated manual undo.enabled checking,
another method UndoStack::push_own() had to be
introduced that makes sure that an undo token is always created.
In batch mode (!undo.enabled), this will however create the object
on the stack which is much cheaper than using `new`.
* Having to know which kind of undo token is to be pushed (taking ownership
or not) is inconvenient. It may be better to add static methods to
the UndoToken classes that can take care of reclaiming memory.
* Benchmarking certain SciTECO scripts have shown 50% (!!!) speed increases
at the highest possible optimization level (-O3 -mtune=native -march=native).
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* the canonicalized labels are used in title bars and popups
* title labels and popup labels are selectable.
The latter only makes sense as long as there is no mouse support
for selecting popup entries.
* message bar labels are selectable
* title bars can be styled according to the current document type
(.info-qregister and .info-buffer classes)
* .dirty has been introduced for dirty buffers.
This way, dirty buffer file names can be printed in italics
without hardcoding that behaviour. It can be customized in the user CSS.
* The style of highlighted popup entries is now themeable as well
using the .highlight style class.
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* those strings can contain control characters
* the canonicalized label will automatically escape the non-printable
characters according to the same mapping used elsewhere and shows
them in "reverse" video.
* reverse video is hard to achieve in Gtk, esp. for Pango versions
that don't support transparent foregrounds
* the current implementation does not need dedicated styling for
reverse video characters; but this may be an option in order to
get it right even on older Gtk versions
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* this was worked around by using an idle watcher which can
be registered thread-safe.
* this workaround can be reverted once we're single-threaded again.
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* This uses the font and size of STYLE_DEFAULT.
* We cannot just pass the font down to the user CSS.
There are no font variables in Gtk CSS.
Therefore we configure the command line widget directly.
This can still be overwritten by an user CSS.
* Instead of using the deprecated gtk_widget_modify_font(),
we generate CSS. Ugly, but still better than writing our
own style provider.
* Font setting is exposed to the user using a new optional
Q-Reg "lexer.font". The numeric part is the point size
multiplied with 100 (fractional point size).
* Font setting in lexer.auto is skipped in Curses
where it is irrelevant anyway to speed up startup.
* Perhaps the "Monospace" font name is also a good default
value instead of Courier?
fixup
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* this is what the Curses UI does for a long time now
* the popup does NOT cover the info (header) line, as this
would be inconsistent if the header is actually the window's
title bar.
This should perhaps be adapted in the Curses UI as well, so both
UIs look more consistently.
* removed unused InterfaceGtk attribute
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* implemented by exporting the most important Scintilla STYLEs
as CSS variables and defining named widgets for the main UI
components.
* ~/.teco_css will then apply the Scintilla styles to the
Gtk UI.
This file is also for additional tweaks, e.g. enabling
translucency.
* A fallback.css is provided which does just that and is able
to apply the terminal.tes and solarized.tes color schemes.
* Other important aspects of theming like font sizes and names
have not yet been dealt with.
(We may want to apply the corresponding Scintilla settings
to some widgets...)
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* many WMs like Unity or even Awesome WM have problems with client-side
decorations.
Awesome WM for instance does not allow us to move or resize
floating windows with CSDs. Also, the added close button does
not make sense for tiling window managers and since they usually
never show window title bars, CSD brings no advantages at all
on tiling window managers.
* Other window managers might not support CSD at all.
* There is AFAIK no way to detect whether CSDs will be possible
or whether there will be glitches (see Awesome).
* Added command line option --no-csd in the --help-gtk group.
This can be added to desktop shortcuts etc. Later there might
be better ways to configure stuff like that, e.g. when we add
support for scripted UI customizations.
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* the header bar takes the role of the "info" line in the Curses UI.
* even though the current file was already shown in the window title,
this has certain disadvantages:
* does not work well with decoration-less WMs like awesome.
The file name is important information and should always be at the
top of the window. The space in the task list of awesome is usually
not even large enough to show the file name.
* the title bar uses a canonicalized buffer/Q-Register name.
For the header bar we can use custom renderings using Pango
that highlight control characters just like the Curses UI does.
This is currently not implemented.
* An icon is now shown for the current file.
This is the same icon fetching code that gtk-info-popup uses.
We might want to move that code into a separate module, along
with Pango rendering - Gob2 could just as well generate C++ code.
* For Q-Registers, currently no icon is shown (FIXME).
* Currently, the subtitle is used to indicate which type of document
(buffer or q-register) is edited. This could be done using the
icons only, in which case we can disable the subtitles and save
screen space.
* Client-side decorations are known to cause problems with some
WMs and if using them fails, we end up with a titlebar and header
bar. It is probably a good idea to make titlebar installation
configurable, at least via a command-line switch (or perhaps
ED flag?)
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allocation issue
* this is a callback for GtkOverlay's "get-child-position" signal
that allocates a size to the popup.
* cleaner than overwriting the size_allocate method and does not
assume apriori that the popup is part of an overlay.
* the popup was always allocated a few pixels too little height,
resulting the GtkViewbox always scrolling.
Actually it requests a few pixels too little.
We now workaround that by adding a constant value to its
natural height when allocating a position in the overlay.
This is of course a non-portable hack.
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* it is currently never hidden since the popup will always be a few pixels
too small to prevent scrolling.
* makes the GTK popup behave more like the Curses one
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* this has been prepared a long time ago
* the popup widget does not in any way depend on the InterfaceCurses
class and could be used elsewhere.
* common and generic Curses drawing functions required by both the
Curses UI and the CursesInfoPopup widget have been factored out
into curses-utils.cpp (namespace Curses)
* this improved the UI-logic separation and helped in making
interface-curses.cpp smaller
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* the GTK UI uses the first three resolutions for setting the
window icon.
* the 256px version will currently not be installed.
It may however be used later when packaging for Ubuntu.
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* use libtool convenience libraries as much as possible
(for all static libraries except Scintilla)
* improves separation of language and user interface implementations
(e.g. the Gtk widgets are not interesting for the rest of SciTECO)
* the Curses popup widget can now be factored out of interface-curses.cpp
* some common CPPFLAGS are now defined by ./configure via AM_CPPFLAGS,
so they don't have to be repeated in each submodule.
* fixed building the Curses UI: GTK_FLOW_BOX_FALLBACK conditional
must always be defined.
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* depend on Gtk+ 3.10. If necessary older versions should also
be supportable. GtkOverlay was already introduced in v3.2
* A fallback for GtkFlowBox is compiled in if the Gtk installation
is too old. This applies even to Ubuntu 14.04 which still runs
Gtk v3.10.
* the threading the Gtk UI is left as it is for the time being
even though the synchronization mechanism has been deprecated.
Alternative approaches have to be tried out and benchmarked.
* Completely revamped the GtkInfoPopup widget.
It is now as powerful as the Curses UI's popup widget.
* A GtkOverlay is used instead of the top-level window hack
in the Gtk2 version.
* GtkFlowBox is used to lay out the columns of the popup.
* I had to work around restrictions of GtkScrolledWindow
by writing my own poor-mans scrolled window which handles
size requests correctly.
* The popup window no longer overflows the screen size,
instead we scroll.
* Scrolling pagewise is finally supported. Wraps at the
end of a list just like the Curses UI.
* Instead of using only two stock icons, we now use
GIO to get file and directory icons for the current theme.
This looks even better.
* The GtkFlowBox allows selections which can be used for mouse
interaction later. But this is not yet implemented.
* Theming of the popup widget and command line is still
not performed correctly.
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of Gtk
* it was necessary to remove the accessibility integration since
I don't want to import a lot of bloat into the SciTECO codebase
* Includes follow the guidelines of external Gtk code now
* internationalization support has been removed
* The "move-cursor" signal uses the generic marshaller now since
we don't want to introduce genmarshal just for that signal
(and it will never be called from a scripting language)
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* this is used as a fallback for installations with Gtk prior
to v3.12
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* when the unnamed file was modified, :EW would just succeed discarding
all changes to the unnamed file.
* Instead now, :EX behaves like the EW$ command on each modified buffer
including the unnamed file.
* In other words, :EX will fail if there is a modified unnamed file
* still refers to #4
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* this allows you to exit and save only those buffers that are modified.
This was not yet possible using macros, since there is currently no way
to query the dirty state of buffers programmatically.
* even if there was, the necessary key presses might be too much for
some users.
* the ability to save all modified buffers has been explicitly requested
by an user in ticket #4.
* the new behaviour is not compatible with classic TECO where EX would
save the current file by default but provides a relatively short way
to do just that.
* updated the documentation: there was also one mistake regarding the
boolean that EX accepts non-colon-modified.
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* it has been proven to be very efficient (at least on Linux/glibc)
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* class2regexp() and pattern2regexp() now have clear semantics
regarding how they scan over a pattern string
* this bug has probably always been around
* memory leaks could happen in case of exceptions because the
pattern match conversion can itself yield errors.
* now search commands also fail for definitely invalid pattern
match constructs like unsupported ^Ex sequences.
* added some documentation
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* this practically fixes the delay issues when using
the escape key since 25ms is too short for humans to notice.
Still it should be large enough for all practical terminal
emulators and transmission speeds to get escape sequences
transmitted.
* If the escape delay turns out to be too short, it can still
be overwritten using the (standard ncurses) $ESCDELAY environment
variable.
* fnkeys.tes will still provide the escape surrogate since the
insert key will often be in a better possition on computer
keyboards.
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* we cannot use G_N_ELEMENTS in attribute declarations with Clang
unless declaring C++11. In this case, since the size of the orig_color_table
is fixed anyway, the declaration was simply fixed.
* some reordering was necessary in cmdline.cpp. This should not
have any influence on GCC when optimizations are enabled.
* Scintilla/Scinterm had to be updated as well.
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* format_str() will now automatically right-truncate strings (with
formatted control characters) exceeding the window width (or provided
maximum width of formatted characters).
This means that Q-Register names in the info line are now properly
truncated.
* introduced format_filename() which takes care of canonicalizing
control characters in a given filename and truncate the filename
if necessary. Filenames are currently left-truncated since the file
name proper and the directory containing it is more significant
than the directory names closer to the root.
On Windows, we make sure that the drive letter is not truncated.
The truncation rules may have to be further tweaked later.
This feature properly truncated file names in the info line and
in the auto-completion popup.
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* use small values for low precedence
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* SciTECO now has the same operator precedence table as C.
* It is numerically important whether different operators
have the same precedence. E.g. "5*2/4" used to be evaluated
by SciTECO as "5*(2/4)" since division had a higher precedence
than multiplication. Within in real (!) numbers this would
be the expected evaluation order.
Users of other programming languages however would expect
the expression to be evaluated as "(5*2)/4" which makes
a numerical difference when working with integers.
* Operator precedence has been implemented by encoding it
into the enumeration values used to represent different
operators.
Calculating the precedence of a given operator can then
be done very efficiently and elegantly (in our case using
a plain right shift operation).
* documentation updated. We use a precedence table now.
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* Haiku can be handled like UNIX in most respects
since it is POSIX compliant, has a UNIX-like terminal
emulator and uses ncurses.
* still the Glib platform macro is G_OS_HAIKU instead of
G_OS_UNIX, so the preprocessor conditionals had to be adapted.
* the only functional difference between a Haiku and UNIX build
is the default SCITECOCONFIG path.
We use the config path returned by Glib instead of $HOME,
so .teco_ini will be in ~/config/settings on Haiku.
Other UNIX ports appear to use the same conventions.
* Some Haiku-specific restrictions still apply:
* Haiku's terminal is xterm-compatible, but only supports
8 colors. Therefore only the terminal.tes color scheme
can be used and the terminal must be set up to
"Use bright instead of bold text".
* The terminal has artifacts. This appears to be a Haiku
bug and affects other curses applications as well.
* GTK is yet unsupported on Haiku, so there may never be
a GUI port (unless someone writes a QT GUI for SciTECO).
* SciTECO cannot be built with the legacy gcc2 used for
BeOS compatibility on Haiku. This would require too many
changes for an obsolete platform.
BeOS and the x86_gcc2 platform of Haiku will therefore
never be supported.
The PPC and ARM platforms of Haiku should work but are untested.
* a HaikuPorts recipe will be provided for the next regular
SciTECO release. This should hopefully allow installation via
HaikuDepot.
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* the old implementation was totally broken, which was to be expected
* we can at least provide a version that always returns an absolute
path, even though it does not canonicalizes
* fixes e.g. Haiku builds for the time being.
Haiku however is mostly POSIX compliant and could be handled
like UNIX.
* simplified the UNIX implementation of get_absolute_path()
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* there appears to be a bug in Haiku's glib v2.38
g_main_context_unref(). However I could not find a fix
in glib's log.
* as a workaround, simply do not unref the main context.
Memory is reclaimed after program termination anyway.
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* necessary since in SciTECO every operator has a different
precedence. E.g. successive additions/subtractions cannot
be evaluated from left to right (by their associativity).
Perhaps this should be changed.
* subtraction must have a higher precedence than addition,
since (a+b)-c == a+(b-c)
* division must have a higher precedence than multiplication
since (a*b)/c == a*(b/c).
This is not quite true for integer arithmetics.
* this fixes expressions like 5-1+1 which were counterintuitively
evaluated like 5-(1+1)
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* use black on light white as the default popup colors
(e.g. in --no-profile mode). this looks less annoying than
black on light blue and is more often more readable
(since light blue will be rendered quite dark often).
It's no longer necessary to highlight the popup with (distinct)
colors.
Keeping the foreground black ensures that there's a brighter
foreground color for bold entries in case the terminal does
not support bold fonts.
* the `terminal.tes` scheme keeps the default popup style.
However since it uses white on black as the default colors,
this will often still stand out from the message line
(on 16 color terminals).
* `solarized.tes` now uses a similar high-contrast popup style
with either a bright or dark background.
The foreground colors have been chosen so that bright variants
exist for non-bold terminals - although these bright variants
do not stand out very much.
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* InterfaceCurses::Popup has been turned into a proper class.
This made sense since it is more complicated now and allows
us to isolate popup-related code.
This will also ease moving the popup code as a widget into
its own file later (it seems we will need subdirs per interface
anyway).
* the popup is now implemented using curses pads of which pages
are copied into the popup window (to implement cycling through
the list of entries). This simplifies things conceptually.
* instead of a trailing ellipsis, scrollbars are shown if the popup
area is too small to show all entries.
This looks much better and consistent with regard to Scinterm's
scrollbars. Also, the planned GTK+ popup widget rewrite will have
scroll bars, too for cycling through the list of entries.
Therefore, the popup window will now always be the same size
when cycling. This also looks better.
* Borders are drawn around the popup area.
This makes sense since the popup area had to be colored distinctly
just to be able to discern it from the rest of the UI (esp. the
Scintilla view). Now, less annoying colors may be used by default
or set up in color profiles while still maintaining good visibility.
Also, with the borders added, the popup area looks more consistent
when it covers the entire screen.
* Entries that are too long to fit on the screen (e.g. long file names)
are now truncated with a bold/underline ellipsis.
* Use scintilla_noutrefresh() to refresh the Scintilla view.
Since popups have to be refreshed __after__ the Scintilla view,
this improves performance significantly and reduces flickering
when displaying large popups.
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* throws an error now instead of returning 0
* for <A> positions referring to the buffer end are invalid
(unlike many other commands).
* has been broken for a very long time (possibly always?)
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* the problem comes from StateExpectQReg resetting the QRegMachine
too early. StateExpectQReg(QREG_OPTIONAL) states cannot call
machine.fail() in their got_register() callback.
In other words, commands with both optional or required registers
depending on runtime state cannot be modelled with StateExpectQReg.
* instead we derive from State directly - most functionality is
encapsulated in QRegSpecMachine anyway.
* might also fix crashes on some systems.
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* palette changes are persistent on PDCurses/win32, too.
Fortunately, on this port we can reliably query the console palette.
This is done ONLY on PDcurses/win32 since on other ports (notably
ncurses), this can cause more harm than it helps.
* support palette restoration on xterm by hardcoding the appropriate
escape sequence. $TERM cannot be used to identify xterm, but
looking at $XTERM_VERSION is sufficient hopefully.
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in other words, PDCurses/win32a now has programmable window-close
behaviour.
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on Scintilla styles
* The first 16 colors of the terminal palette can be redefined
using the 3EJ property - with all restrictions that ncurses
and UNIX terminals impose on us.
It is still important to be able to redefine the palette for
some color schemes like Solarized since it may be difficult
for users to set up the terminal emulator's palette manually.
Also when using PDCurses, setting the palette is port-specific
or only possible using init_color(). In order to allow color
redefinitions across all curses ports it makes sense if SciTECO
gives access to the color initialization of curses even if it can
guarantee very little about its semantics in general.
* 3EJ is completely ignored for GTK+
* use the STYLE_DEFAULT of the current document to style the message line.
Fg and bg colors are reversed to guarantee a good contrast to the
Scintilla view.
Errors are still hardcoded to a red background, warnings to yellow
and info messages to green.
This allows color-scheming more of SciTECO given that the
red, yellow and green terminal colors are not changed fundamentally
in the terminal's palette.
* info line is now also styled using STYLE_DEFAULT (reverse colors).
The Q-Register and buffer names are now written out using format_str()
which means that control characters are written out in REVERSE just
like in the command line.
String::canonicalize_ctl() is still used to canonicalize window
titles.
* Command line is now modelled as a curses Pad and "blitted" to the
command line window. This allowed simplification of the command line
drawing code and introduction of format_str().
The command line is now styled according to STYLE_DEFAULT (original
fg and bg colors).
The rubbed-out part of the command line can now longer be shown in
bold black - or even bold light black - since that is not visible in
all color themes. Instead it is now only shown in bold.
Command line theming problems will be gone once we use a Scintilla
view for the command line.
* The popup widget is now styled according to STYLE_CALLTIP.
* This means that all relevant parts of SciTECO's user interface
can now be themed. This allows the creation of themes that redefine
the terminal palette radically (e.g. Solarized) and the creation of
"bright" themes (e.g. Solarized/bright).
* theming of the non-scintilla-view parts of SciTECO is currently
unsupported on GTK+. The reason is that both the popup widget
and command line widgets have to be rewritten completely in GTK+
and are work in progress, so adapting the current code would be
a waste of time.
* Added a manual section about the UI and theming.
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implicit casts
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* added a new OPTIONAL behaviour for QRegSpecMachines
* allows you to implement commands that have an optional Q-Register
argument that should not be initialized if undefined.
* Using QRegSpecMachine::fail() you may still check for existence of
the register conditionally to emulate the QREG_REQUIRED behaviour.
* Using :Q for checking for register existence makes sense, because
usually you will want to check for both existence and non-emptyness
as in :Qq">. So in this common case, you no longer have to
keep in mind that the register may also be undefined.
* This finally allows us to create arrays in the Q-Register
tables without keeping a separate entry for the number of elements.
E.g. an array.0 to array.N can be iterated like this:
0Ui <:Q[array.^E\i]:; ! work with element i ! %i>
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* this means that QRegSpecMachine::input() no longer has to return
a dummy QRegister in parse-only mode.
This saves an unnecessary QRegister table lookup and speeds up
parsing.
* QRegSpecMachine can now be easily extended to behave differently
when returning a Q-Register, e.g. simply returning NULL if a register
does not exist, or returning a register by prefix.
This is important for some planned commands.
* StateExpectQReg::got_register() now gets a QRegister *.
It can theoretically be NULL - still we don't have to check
for NULL in most cases since NULL is only passed in parse-only mode.
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