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* fixes compilation on g++ 4.7 where compound literals are suddenly
temporaries (from which you cannot get a pointer)
* the compound statement (also GCC extension) should ensure that
the string is allocated on the stack with automatic lifetime
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* compiler does not warn by default: this actually makes sense
* so we don't need any unused-attributes
* less GCC-extension based
* on older GCCs I think -Wunused-parameters was enabled by -Wall
we should add -Wno-unused-parameters if that's the case
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* new Expressions::format()
* may be used format numbers as part of arrays (Q-Register names)
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of success/failure booleans
* for the S and T conditions, nothing changes effectively (were testing for < 0 already)
* the F and U conditions were testing for equality to zero which worked for condition booleans
returned by commands but not for any failure condition (defined as >= 0)
* may be different in classic TECOs but makes more sense IMHO
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* flow control and other structures have not been documented this ways.
I have not yet decided whether they should be documented in separate
sections or use the documentation tool.
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* also updated sciteco(7): add SEE ALSO and AUTHORS
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* useful for using macro libraries
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* storage size should always be 64 (gint64) to aid macro portability
* however, for performance reasons users compiling from source might
explicitly compile with 32 bit integers
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string-building commands
* allows referring to long Q-Register names in string arguments
* currently, long names specified this way use their own string building char parsing
(I'm unsure whether this makes any sense)
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base class
* uses label pointers instead of state-enum and switch case
(both faster and shorter to write)
* common interface for all micro state machines: makes them reusable
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cmdline and cmdline_pos is no longer modified by code executed by step()
instead it is modified at the outermost macro level (commandline macro level)
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* allows us to switch between buffers/registers when editing the
commandline
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allows commandline editing scripted by macros
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* simplified traditional commandline editing. no need to extend cmdline string one character
at a time when inserting multiple. instead there's a marker (cmdline_pos) specifying the macro
length to execute in a "step" and also the anchor for generating undo tokens
* implementation does not yet work in macro calls
* while editing the commandline, other buffers/registers may not be edited
(need push-down-list and auxiliary q-register)
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* there was a dependency on interface initialization.
it did not cause issues because destruction order was
by chance.
* introduced INIT_PRIO and PRIO_* macros to easy initialization order declaration
(using a PRIO_* formula makes code self-documenting)
* also used this to clean up QRegisterTable initialization
(we do not need the explicit initialize() method)
* also used to clean up symbols initialization
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* parser.cpp|h should be reserved for generic and misc. stuff.
the StateExpectQReg class is used almost exclusively by qregisters.cpp|h
* resolves a circular header dependency issue
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commandline macro)
* only works as part of commandline macro,
* at the beginning of other macros, it is treated like an arithmetic asterisk
* variables defined in cmdline.cpp are now declared by new cmdline.h
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* CTRL/C will be a command so it is important to be able to type it directly
* aborting character processing is important because it allows aborting infinite loops
* since the loop interruption currently relies on SIGINT handling, there is only limited
support for XCurses and GTK - CTRL/C has to be typed in the terminal window.
later support for input queue polling might be added
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