ChangeLog

The following change log summarizes changes introduced
by SciTECO releases compared to the preceding release.
Only changes relevant to users (build from source or
using a prebuilt binary) are included.

Entries marked with "(!)" might break macro portability
compared to the preceding release.

Version 2.1.1
~~~~~~~~~~~~~

eff7233 session.tes: store the current tab style (width and hard-tabs).
        Also, it now handles filenames containing ASCII 27.
b016f78 if a macro ends without finding a goto label, always throw a 'Label "..." not found' error
cdd0133,
2406e37,
9cce7d2 Fully support relocatable binaries, which improves Linux AppImages.
        The root (/) directory will now longer look strange when browsed from AppImages.
        This might also fix AppImage execution under some environments (at the very least
        FreeBSD's Linuxulator is now supported).
4b05f26 fixed assertions in ^EGq search construct for Q-Registers with uninitialized string cells
be230b5,
ff2d137 Fixed invalid memory access when executing the F< command.
        This was an issue only when jumping to the beginning of the macro.
5f14184 Search commands: fixed the Q-Reg spec machine used for implementing ^EGq (match one of characters in Q-Register).
        This will now always use the correct local Q-Register table and we might
        have even fixed crashes.
6d882a3 <N> (search all): fixed crashes before invocations of <S> (closes #26).
        Also, the string argument codepage is now properly initialized.
5f0c391 PDCurses: filter out bogus double keypresses in combination with CTRL (refs #20)
9242405,
cd4528a,
0ce3b52 Added hidden --fake-cmdline parameter for testing command-line editing.
        You can also use this to prepare reproduceable test cases in bug reports.
427092d Fixed rubbing out <:Xq>, <:^Uq> and other append-to-register operations.
        This has only been broken in v2.1.0.
a29382e,
7e37a97 GTK/Win32: fixed clipboard retrieval. It was inserting bogus trailing nulls.
abfbeb1 fixed EOL conversion on UTF-8 texts
e69e7c9 <EC>: fixed some ^C interruptions on Win32.
        This remains broken, though.
0f740ee,
e9bef20 <EC>: fixed insertion of data garbage (invalid reads) and omissions
3b3bc07 <EC>: fixed race conditions and problems when creating and terminating process groups on Win32.
        This fixes occasional <EC> failures.
8fedd52 Fixed false positive "Editing local registers in macro calls" errors.
        This also fixes the solarized.toggle (F5) macro when using the Solarized color scheme.
62b124e,
3742537 Curses: italic and underline styles are now supported.
        This does not work for the INDIC_PLAIN indicator style.
        Also, the underline style is not currently supported by color.set.
0ddb6a8 grosciteco.tes(1): mention new macros, changed command lines and restrictions
f5c6c1d grosciteco: basic support for GNU pic graphics
1498c13 grosciteco: support .SCITECO_STARTSTYLING and .SCITECO_SETSTYLING macros
d3a91fc grosciteco: fixed the CuXXXX postprocessor command, ie. insertion of characters by unicode,
        ie. typesetting of most non-latin text.
        We still don't support decomposed characters, though.
9a6c16a grosciteco: fixed styling of multi-byte text (ie. non-latin characters)
730567b grosciteco: added some more quote glyphs
2bbc584 grosciteco: support the "pc" (centered dot) glyph

Version 2.1.0
~~~~~~~~~~~~~

7413b9c Fixed memory leak when replacing command lines.
        Even cursor movements via function keys (fnkeys.tes) were constantly leaking memory.
820f716 improved support for braces within loops: warn about unclosed braces and fixed breaking from within braces
7adcfbf,
9a25dfd,
(!)b36ff25 Pattern match characters support ^Q/^R now as well.
           This makes it possible, albeit cumbersome, to escape pattern match characters.
5395a7d check the memory limit and allow interruptions when loading files
973e50d FreeBSD/jemalloc: fixed recovery after hitting memory limit
b3ae8e2 fixed memory limiting if the process' memory usage is larger than 2GB and overflow checking
f188d74 fixed rubbing out (some) string building constructs at the beginning of the command line argument
dcaeb77 Inhibit some immediate editing commands after ^Q/^R string building constructs.
        This makes it easier to insert ^W (23) by typing ^Q^W.
        ^Q^U was coincidentally already working previously.
c288762 Allow OSC-52 clipboards on all terminal emulators.
        For Urxvt support, have a look at https://gist.github.com/rhaberkorn/d7406420b69841ebbcab97548e38b37d
49e1f09 syntax errors are reported with "echoed" characters, ie. as purely printable characters
(!)2b5b2a4 ^W^W and ^V^V can be typed completely with upcarets now and they case fold all expansions
           of ^EQq, ^EUq and so on. For instance you can now type EUq^W^W^EQq$ to
           upper case Q-Register q.
(!)fcf962e Ctrl+^ (30) is no longer translated to a single caret in string building (refs #20)
5b3906f,
8fbd0b3 "Special" Q-Registers now support EQq...$ (load) and E%q...$ (save) commands.
        You can for instance directly load the clipboard from file contents.
b7b9840 check that local register is not edited at the end of macro calls
3db9368 improved HTML lexer (html.tes)
e307e56 netbsd-curses: fixed the default escape delay.
        Recent versions of netbsd-curses are indeed fully supported now.
84cc45e PDCurses/WinGUI: significantly reduced flickering
a06bcea,
6f16667,
8744502 Curses: added support for cool Unicode icons (refs #5).
        This requires "Nerd Fonts" and 0,512ED in the profile.
52d73e8 GTK: support setting and getting clipboards containing null bytes
c739742 GTK: allow disabling client-side decorations by setting $GTK_CSD=0.
        This is the same variable used by gtk3-nocsd.
19d3f12 GTK: Fixes icons in tabbed and st (when embedding SciTECO via --xembed).
0e6e059 GTK: ignore the keyboard layout whereever possible (refs #5)
bc859a0 fixed rubout of empty forward kill (FK)
638f63c,
966d3ef minor search optimization - search commands will remove the buffer gap less often
ded9a02 test suite: enable the recursion overflow test case everywhere
2fd3664,
c2057eb,
(!!)abb5d23 Function key macros have been reworked into a more generic key macro feature,
            allowing you to repurpose "international" characters on your keyboard.
            You could also simply remap them to their latin counterparts, so you don't have
            to change keyboard layouts often (on Curses, as GTK does that automatically).
            The function key macro prefix changed from ^F to ^K.
            Also, you don't have to and should no longer set 0,64ED.
cc63f3b improved file name autocompletion
c59b33c,
4789e39,
4ca4ba2,
f55f50e,
73d574b,
(!)6857807 The SciTECO parser is Unicode-based now (refs #5).
           All language constructs are still exclusively based on ASCII,
           but Unicode (UTF-8) is accepted everywhere, where an arbitrary character
           is expected (as in string arguments and Q-Register names).
           SciTECO macros must be in valid UTF-8, which may break existing macros that
           embed arbitrary bytes.
2f632e1 disable unused Scintilla features at build time, slightly reducing binary size
e5d49eb Production builds will be slightly faster due to omission of runtime assertions.
b729ee4 sample.teco_ini: Codepage guessing (refs #5)
dd36439 sample.teco_ini: fixed opening files with glob characters in their names.
        You are advised to merge changes into your ~/.teco_ini as after every upgrade.
c4a1c3a,
c222fa3 added an improvised lexer for styling Git commit, tag and merge messages.
bed2f36 <f,tXq>: fixed for very large character ranges
9241075 improved 8-bit cleanliness test cases and added Unicode test cases (refs #5)
4f23187 Added raw ANSI mode via ED flags to facilitate 8-bit clean editing (refs #5).
        There is also a `--8bit` and `-8` command line argument.
41ab5cf Xq and ]q inherit the document encoding from the source document (refs #5)
403c1cd search patterns are now expected to be in UTF-8 and the document's encoding is taken into account (refs #5)
d714bb4,
d556aee,
b31b887 the ^EUq string building escape construct now respects the encoding (can insert bytes or codepoints) (refs #5)
850fa38,
(!)b85edaa <I> and <n^U> commands checks input codepoint ranges depending on the encoding (refs #5)
a747cff conditionals, eg. <n"A>, now check for Unicode codepoints (refs #5)
1d8f702 grosciteco: added the "aq", "ha" and "ti" glyphs (refs #22).
        This fixes building on newer Groff versions, but may not have been an issue in v2.0.0.
db5ab17 grosciteco: support Unicode (refs #5)
33124e3,
e384e4f Implemented <EE> and <^E> commands for configuring and converting between encodings and translating between
        glyph and byte offsets (refs #5).
        Support for handling single-byte encodings is still incomplete, but you can edit
        raw binary files.
62ccd35 win32: fixed opening and saving UTF-8 filenames (refs #5)
4a4ffd9 win32: convert command line to UTF-8 (refs #5)
90bad24 allow Unicode characters in command line arguments (refs #5)
2a05075,
745a76a,
359e257,
4dadac8,
e466218,
34683e8,
7507ad3,
7c59256,
f79a6f6,
c71ed30,
(!)4c6b681 Input and displaying of Unicode characters is now possible (refs #5).
           Furthermore you can edit and navigate Unicode (UTF-8) documents.
           TECO addresses refer to glyphs now in Unicode documents, instead of bytes.
           This uses heuristics and can be slow in certain corner cases.
           Care must be taken when interacting with raw Scintilla-messages (ES) as they
           are always byte-addressed. You must use the new ^E command in these situations
           to translate between buffer addresses.
fdc185b fixed retrieval of characters with codes larger than 127 (<A>, <nQ> commands)
ee9cf43,
e2c7c11 fully support out of tree builds
fbaa927,
07d9cdf,
78e7f30,
bbcf801 Updated Scintilla to v5.5.2, Scinterm to v5.1 and Lexilla to HEAD (rel-5-2-7-211-ge0f045a0).
        This adds a troff/nroff lexer (for manpages among other things).
83398b3 fixed expressions like `1,(2)` or `(1),(2)`: they are reported as two numbers now
21c5be3 Fixed and improved the power (^*) operator.
        It did not handle corner cases and was inefficient.
f2b070c fnkeys.tes: cursor movement now preserves the column as in most text editors
e37c2d6 fnkeys.tes: support zooming via F9/F10 on Gtk
23fb4d2 grosciteco.tes(1) manpage: fixed formatting of list of troff macros
5a8c5e8,
27fba8b,
c3e25ca,
33721ec several fixes in the sciteco(1) and sciteco(7) man pages
37eef3c avoid Groff warnings due to `\` escapes
22906ff fixed Clang warnings about one-bit-wide boolean integers (-Wsingle-bit-bitfield-constant-conversion)
7c1c6e2 fixed <EC$> assertions: specifying empty command strings was undefined
f1fec09 fixed ]$ and ]~ (pop from Q-Reg stack to special Q-Registers).
        The idiom [$ FG...$ ]$ to change the working directory temporarily now works.
        Similarily you can now write [~ ^U~...$ ]~ to change the clipboard temporarily.

Version 2.0.0
~~~~~~~~~~~~~

b65c64a don't set up any margins or indention settings on the unnamed buffer in sample.teco_ini
aa2e96a,
29bf227,
f557af9,
bac1efa fixed <EC> interruptions on Gtk+ and most other platforms.
        On supported platforms the first CTRL+C will try to gracefully kill the
        subprocess, while the second one resorts to a more agressive method.
5470fc3 Curses: do not allow typing any non-ASCII characters - fixes crashes on PDCurses/WinGUI.
        This is a temporary limitation as long as we do not support Unicode.
f0d57d7 added Asciidoc lexer config
85599c7 added Markdown and YAML lexer configs
d10997a improved the C/C++ and Gob lexers
4273088 added lexers for Python and Linux Device Trees
df6c898 CPP lexer: support *.ino files (Arduino IDE sketches)
b8e8cc8 added lexing support for Gob2 (GObject Builder)
9f7f187,
b091d8b The "cpp" lexer configuration has been split into "c.tes" and "cpp.tes"
        effectively improving C support.
2f72665,
a6b5394 fixed crashes after interruptions of commands with string arguments in interactive mode
        It's not clear whether this has been broken in v0.6.4.
60a0913 data installation path is now configurable via --with-scitecodatadir
030e0f5 Allow disabling Lexilla (Lexer) support by specifying --without-lexilla.
        When optimizing for size, this helps saving 50% of the compressed binary size.
ba08753 Fixed rubbing out words (^W) and possible chrashes.
        This has probably been broken in v0.6.4 as well.
cc417af fixed formatting of dates in manpages
9f659ec,
e752a64 fixed grosciteco (and thus building) for newer Groff versions (#11)
ca9de04 sciteco(1) manpage: All UIs support ^C interruptions now
101a868,
73cab56 bumped required PDCursesMod version to v4.3.4 or later
147e53b,
9586a03,
9a5e363,
3706112 Fixed CTRL+C interruptions on all versions of PDCurses
0d3da2c reduced memory use in interactive mode due to undo tokens
d6126b3 fixed rubout of certain constructs like Ifoo$FRX$$
        It's not known whether this bug existed on v0.6.4.
aa00bf1 added ./configure --enable-debug and make sure that NDEBUG is defined properly
4c79d26 Gtk: fixed entering dead keys
1c88da4 Woman pages under Gtk: fixed monospaced example blocks
39490d6 Gtk: default font is now "Monospace" instead of Courier.
        This avoids unexpected ligatures.
f15bc53 Gtk+: fixed interpretation of Alt-Gr-keypresses.
        This bug appeared with newer Gtk+3 versions.
8031da6 Gtk+: Stop memory limiting when idling
18a0543 Gtk: disabled ^Z suspension on Unix for the time being.
        This cannot easily be made working properly.
fdb89d9 GTK: Support for Xembed protocol via --xembed.
        This is useful for instance with tabbed (https://tools.suckless.org/tabbed/):
        $ tabbed sciteco --xembed
6df603d Gtk: fixed message bar's background color
073f5f2 Gtk: The GObject Builder (GOB2) is no longer required.
b21d294 Gtk: Display control characters in titles and autocompletion popups
        like in the text buffer.
45413d0 Gtk UI: popup will now overlay both the Scintilla view and message widgets
e768487 Gtk UI: full color scheme support
cff9fb1,
8627a00 Gtk UI: added option --no-csd to disable client-side decorations
f25f97e Gtk UI: uses header bars now
eed939f install PNG icon and use it to set GTK's window icon
3fd1a19 GTK UI: beep on error
f337481 improved default selection colors and made them configurable via color.tes
3ed4116 fixed building on Mac OS
af16d43 fixed crashes when the Q-Reg stack is non-empty at exit
        This might have been broken in v0.6.4 as well.
8ef010d optimized caret scrolling: this is a costly operation and is now done only once per keypress
8baa1b3 optimized character representation setting
50d63f2 fixed hiding savepoint files on Win32
0267b68 Optimized process spawning (EC) on UNIX
ae913ab Negative searches (<S>) check for multiplication overflows now
9fa78ca Memory limiting fixed on Mac OS X
5167dad guard against too low arguments to <S> by checking whether the memory limit would be exceeded.
        This fixes potential crashes.
e3b2bb7 fixed Clang builds
a2e52ca,
432ad24 Significant internal rewrites.
        * String termination takes string building characters into account, ie. you can use
          the termination character (escape by default) in ^EQ[...].
        * Also, it's now possible to escape it using ^Q/^R, adding yet another way to insert escape
          characters.
        * All strings are 8-bit-clean now. This means you can also use SciTECO as
          a scriptable binary editor.
        * Gtk+ (>= v3.12) interface is usable and stable now.
        * Memory limiting should finally work on Linux, Windows, Mac OS and
          FreeBSD.
        * Glib v2.44 is the minimum required version now.
524bc39 improved Emscripten support: fixed configure-checks, generate *.js and detect EMCurses
90baf34 Automatic case-folding of commands in interactive mode when enabling bit 3 in ED (`0,8ED`)
2491d5f fixed checks for missing left and right operands to binary operators
4038aa2 fixed and optimized piping very large buffers via EC/EG
5069c3b fixed Q-Reg autocompletion for `Q` command
8b00fa8,
6f9705b support NetBSD's curses (--with-interface=netbsd-curses)
af05d38,
f4da329 Significantly reduced memory use for undo tokens (interactive mode)
f90b197,
733e012,
5e84b63,
0ad317e build system portability fixes (FreeBSD compatibility)
c1113c2 fixed table formatting in generated HTML files (sciteco.7.html)
e4d5a99 allow dollar sign ($) as another variant of ^[ (discard all arguments or return)
8460f92 Fixed rubout of the first command after command line termination ($$).
        It's unclear whether this has been an issue in v0.6.4.
0fbbc0d womanpage lexer: fixed popup styling
bece75c updated sample.teco_ini: 2EJ now sets a more or less global memory limit
(!)1cec19d Fixed interpretation of the Q-Register specification "..".
           The parser would allow arbitrarily many dots in front of a local Q-Register
           name. ".." is the local Q-Register "." now.
84ab169 auto-completion of Q-Register names, goto labels and help topics
be39ab9 The manpage generator generator-docs.tes has been renamed to tedoc.tes
b44a4ba standard lib: added getopt.tes for parsing command line options in scripts
cb5e08b It is now possible to write SciTECO scripts with command-line arguments.
e7867fb implemented self-documenting (online) help system.
        You can use `?` for looking up a help topic.
        Documentation is opened as so called "womanpages" which are generated from
        Troff man pages using grosciteco.
        Groff is therefore now a hard compile-time requirement.
c0fe494 fixed segfault when munging empty scripts
(!)9f6cba5 Globbing (EN and EB commands) support character classes now and
           ^EN string building construct can be used to escape glob patterns.
(!)61ff6e9 Integrated clipboard support on Gtk+, PDCurses and ncurses/XTerm.
           The clipboard is exposed as Q-Registers beginning with "~".
16e9b0d Added ^E@ string building character for expanding arbitrary strings
        so they can be parsed from UNIX shells.
        On Windows, you will have to enable UNIX98 shell emulation to make
        use of this feature.
9e97b58 session.tes: save and restore the working directory as part of the session
c4dbe74 fixed rubout and reinsertion of the loop end command (>)
4686d18,
39124fd EG and EC use $SHELL (UNIX) and $COMSPEC (Windows) as the default command
        interpreters now.
        The corresponding Q-Register is always the uppercased $COMSPEC even if
        the native system uses a different spelling.
4db7f46 Implemented ^C command to terminate a script (similar to exit(3)).
        This is disallowed in interactive mode.
247884a `F>` outside of loops will now return the parent macro level (like $$)
         and terminate the command line in interactive mode.
(!)de73943 Added pass-through loops: `:<`, `:>`, `:F<`.
           F< outside of loops jumps to the beginning of the macro now.
           A lot of checks have been added for unterminated loops etc.
52a8d7f,
(!)f08187e Implemented <$$> command for returning from a macro
           Since $$ is a regular command now also in interactive mode,
           syntactic characters (eg. string termination) are now longer taken into
           account when terminating command lines.
5fce211 Fixed many rubout-rubin cases.
1da5bde,
b259cb6 optimized command execution in batch mode, during macro calls, loops etc.
406cf5a added 16px, 32px and 256px versions of the SciTECO PNG icon
f9c1765,
131fe7c added :EX (colon-modified EX): exits SciTECO saving all modified buffers
40318a2 refactored pattern matching processing: fixes segfaults and memleaks
dc02222 ncurses: use a default escape delay of 25ms
21e0d30 curses UI: fixed truncation of non-filename popup entries
b710f6a curses UI: properly truncate q-register and file names
efa862d,
(!)ecbc58f Different operators can have the same precedence now.
           SciTECO now has the same operator precedence table as C.
8baae75 Curses UI: revised popup area, with borders and a scroll bar; reduce flickering
(!)e77f4d3 <nA> for n pointing to the buffer end throws an error now.
7a85142 fixed error message for Qq if <q> does not exist
45e2f9a curses UI: support terminal palette restoration on PDCurses/win32 and xterm
c77101c curses: fixed arithmetic error when window is smaller than 2 columns
6a9a7d5 added port of the Solarized color scheme (solarized.tes)
f69d1f0 programmable terminal color redefinition and theming SciTECO curses UI based on Scintilla styles
        This is using 3EJ.
95ebb1c <:Q> returns -1 for non-existent registers now
(!)9c19ab0 do not imply values for the "=" command but fail instead if argument is missing
859a831 enable function key macros automatically when sourcing fnkeys.tes
007cfe7 disable all Scintilla margins by default
c39b545,
ae2f607 added "^FCLOSE" function key macro and defined SIGTERM behaviour
d9e2250 the Scintilla caret is now non-blinking by default
a1a7d3d never show the horizontal scrollbar by default
65a1e61 disable PDCurses/win32a "function keys"
91bbf67 improved ncurses/win32 support
17e7768 added XCurses support
8101cec major Curses UI revision: initialize curses as late as possible
15409ba Handle environment variables more consistently.
        Subprocesses inherit the Q-Registers beginning with "$" as their
        process environment.
7919aca support UNIX-shell-like tilde-expansions in file names and directories
88dc6ac It is an error now to try to set or append the string part of "*" and appending to "$"
02d414b added <FG> command and special Q-Register "$" to set and get the current working directory
6c62ccc Modified ^W (rub out word) in string (and file name) arguments:
        ensure that we always rub out beyond empty arguments
b65eee0 support specialized ^W (rub out part of file name) immediate editing command in file name arguments
c98a2cd restrict globbing in the EB command to regular files.
bae8cd7 The <EN> command now allows matching file names and checking file types.

Version 0.6.4
~~~~~~~~~~~~~

18fe073 added PDCURSES_LIBS ./configure variable to overwrite the check for PDCurses
537b7b5 preliminary support for ncurses/win32. This port is not well
        tested.
64ee414 implemented function key masking (context-sensitive function key macros).
        The command line editing macros in fnkeys.tes will no longer insert
        "garbage" into string parameters.
cb8411d,
c310c7d implemented automatic EOL translation support.
        This means that SciTECO now properly supports editing files with
        different line breaks. It especially simplifies editing files with
        DOS/Windows line breaks and allows you to write portable macros that
        are line break agnostic.
eee4f1a added "EL" command for setting/getting the current document's EOL mode
14ec511 also set window title on ncurses, by querying terminfo capabilities.
        This feature is currently buggy.
34a4c7e ncurses: Fixed batch mode initialization in head-less environments
        (where $TERM is unset). Interactive mode should no longer start in
        headless or broken environments but report an error.
2a4acd6,
2c0e9f7,
4dced2c improved ncurses batch mode initialization.
        Only relevant for UNIX/Linux: When SciTECO is run in batch mode,
        it completely keeps away from the process' terminal device.
        It no longer flashes the screen (was visible e.g. in rxvt-unicode).
7ceabb2 Curses UI: beep on error. This might also perform a visual bell or
        nothing at all (depending on the terminal emulator).
b3acf28,
647e6eb added cool SciTECO icon (on Windows, it is the icon of sciteco.exe)
20cb9a7 added --no-profile command line option
1126007 added the <"I> conditional for checking whether a character is a
        directory separator
(!)a0d1231 always normalize directory separators to "/" in the "*" Q-Register.
           On Windows "*" used to contain Windows directory separators.
           With the new behaviour it is easier to write portable macros.
67b846c added ./configure --enable-static-executables option
e88f9bb,
3db42f8 optimized user interface drawing.
        Should also speed up the GTK+ UI.
10e4e27 fixed displaying of control characters in the "info" line (and window title)
4a4687c improved `sciteco --help` output
2a4e114 fixed m,nXq for m > n: this properly throws an error now instead of crashing
63c88b9 changed save point file format to .teco-<n>-<filename>~
        Users should adapt existing VCS ignore patterns if necessary.
a3a340a fixed TAB completion of files in the current directory beginning with ".".
        Not sure if this bug existed in v0.5.
2cfc358 added function key macro for Shift+DEL to fnkeys.tes:
        Acts as a "reverse" backspace-key (depending on the state of the
        ^G modifier).
800bbd8 fixed function key handling on GTK UI.
        Function keys are now properly ignored until they are enabled by setting
        bit 6 of the ED flags.
a399be7 On UNIX/Linux with glibc, heap memory can be reclaimed
        earlier when terminating a command line.
        This means that your system will recover earlier after it began
        swapping because SciTECO used too much memory.
8178f8d,
4aa51b9,
3373274,
ef82d22,
83ebaea,
482c0e7 Implemented re-insertion of rubbed out command lines.
        This effectively implements SciTECO's version of Redo.
        Rubbed out parts of the command line are still visible in grey.
        The new "^G" immediate editing command can be used to
        toggle the behaviour of the rubout commands from rubout (undo)
        to re-insert (redo).
        The "^G" toggle modifies other immediate editing commands as well.
        It replaces the "^T" immediate editing command with "^G<TAB>^G".
b40fe86 implemented undo stack memory limiting (ticket #3).
        The size of the undo stack is now approximated and limited.
        An error is thrown and the current command fails if more than 500mb
        are used by it. The limit is configurable (see "EJ" command).
        This makes it harder to crash SciTECO by using up all the memory
        due to infinite loops in interactive mode.
611bb22 fixed crashes when loop is closed (>) or continued (F>) without a
        corresponding loop start (<) (ticket #3).
4624eeb,
c7b2da8 work around Scintilla character representation drawing bug.
        This fixes too much space being allocated to control characters in the
        SciTECO buffer view.
1b07f32 Scintilla: fixed tab stop calculation on Curses
        This is included in the Scintilla mirror at https://github.com/rhaberkorn/scintilla-mirror
        and thus in v0.6 source bundles.
(!)d24bc4a implemented support for different indention styles.
           The TAB-command (^I) has been extended to insert indention characters
           according to current Scintilla settings (SCI_SETUSETABS, SCI_SETTABWIDTH).
           TAB has been made an immediate editing command in insertion commands
           ("I", "^I" but also search-and-replace arguments) to insert indention
           characters by the same rules.
           In old macros where "^I" was used for inserting the TAB-character,
           "9I" should be used instead.
574d284 support filename auto completions with forward-slash directory separators on
        Windows. Auto-completions will now use the last directory separator in
        string that has been typed before auto-completing.
        On platforms like Windows where both forward and backward slash separators
        are possible, this makes a difference.
        By default however, the platform-default directory separator is used.
613e8c9 Curses: support cycling through long lists of possible auto-completions
        and optimized screen refreshing/redrawing
52ecff4 Curses: fixed formatting of popup windows
4377770 do not show possible completions for hidden files and directories
        They are ignore during tab completion unless the beginning of the name
        of a hidden file or directory has been typed.
        I.e. "../.<TAB>" will still complete hidden files on UNIX.
(!)ad3d2f4 implemented pQq and :Qq commands
           In other words, the "Q" command can now be used to index the
           string part of a register and query its size without editing it first.
           This breaks macro backward-portability since "Q" will no longer
           ignore existing values on the stack.
           Therefore the expression "QaQbK" must now be written "Qa,QbK".
ebf0440,
abda28b introduced $SCITECOCONFIG env variable, and set different default for
        $SCITECOPATH on Windows.
        $SCITECOCONFIG allows you to reconfigure the path where SciTECO looks
        for the profile macro.
        On Windows, these variables are initialized to paths relative to the
        location of the sciteco.exe file. This keeps SciTECO self-contained on
        Windows (unzip the release and go!) while allowing it to be added to
        $PATH and used from any working directory.
        The environment variables can be set explicitly, e.g. to set up
        SciTECO for a MSYS or Cygwin environment.
        The environment variables are always normalized to absolute paths.
        On Windows, the profile macro is now called ".teco_ini" just like
        on UNIX. You must rename existing "teco.ini" files or - better yet -
        completely rewrite them.
e030c4e fixed memory leak in batch mode
1e5115b Added "E%" command to save a Q-Register's string contents to disk
        without changing the current document.
        "EW" can now also be used to save a Q-Register to disk.
14cc71e added "EI" command as a non-string-building variant of "I"
3e7ebb5 added "EU" command as a variant of the "^U" command with string building
        characters enabled.
a6c13d7 allow setting the numeric part of the "*" register as an alternative to nEB
        Allows a few useful idioms like "1U*" instead of "1EB$" and
        "[* ! temporarily edit another buffer ! ]*"
6e5a611,
5b74ef5,
2900fcb,
d38df48 added a buffer session module (session.tes)
        This can be used handle buffer sessions (i.e. restore the buffer ring
        when starting up again).
        It also includes macros like "session.git", "session.svn" and
        "session.hg" to set up one session per VCS repository automatically.
a37daa8 added "EJ" command: return runtime properties
        This may be used e.g. to query the number of buffers in the
        ring. "EJ" or "1EJ" will return the number of buffers, while
        "0EJ" returns the current user interface. You can use that
        in the profile for instance to select different color schemes.
f279d24,
67bfd59,
427c9d1 added globbing command "EN"
        It is called like classic TECO's "EN" command but behaves
        differently.
28fd3db fixed rubbing out buffer edits ("EB") after a local Q-Register
        has been edited. Not sure if this was present in v0.5.
59bbee9,
16a47e2 finally implemented the CLOSE and QUIT hooks.
        These ED hooks were already documented but unimplemented.
        The "CLOSE" ED hook is now executed before a buffer is removed
        from the ring.
        The "QUIT" hook is executed before SciTECO terminates in a batch
        mode context. In other words, when quitting SciTECO shuts down
        interactive mode and executes the "QUIT" hook.
        "QUIT" hooks may be used to save buffer sessions.
(!)efa646d renamed ED hook register to "ED" and protect ED hook executions
           In other words, to set up ED hooks, you must now configure
           the Q-Register "ED", as in "@^U#ED{ !...! }".
           ED hook executions are now protected, as if run by
           "(nM[ED]^[)". This means that buggy ED hook macros can
           no longer result in undefined side-effects of commands
           that trigger ED hooks.
e909fb2 Throw error when a macro terminates while a local q-reg is edited.
        This fixes possible crashes resulting from accessing freed resources.
f843a09 throw error when macro returns with an unterminated command
        E.g. the macro "@^Um{Ihello}" will throw an error if executed
        with "Mm".
(!)4282e7d allow a current buffer if we're editing a Q-Register.
           This means that the Q-Register "*" contains the name of
           the current buffer even if a Q-Register is edited.
c80c632,
d4f8fb3 new modular lexer (syntax highlighting) system
        This includes configurable color profiles (colors/*.tes), one lexer
        configuration file per language (lexers/*.tes) and automatic
        loading of installed lexer configs.
        Syntax highlighting can be set manually by executing
        corresponding macros. E.g. to set C++ syntax highlighting
        you can execute "M[lexer.set.cpp]".
        The lexer library (lexer.tes), contains useful macros
        for writing your own lexer configurations.
2542eb0,
e762a43,
2ee2ddd,
38fcf6d Improved overall performance by avoiding unnecessary virtual method calls
0f413b0 Adapted sample .teco_ini: margin setup must be done for every new document
(!)8be99d3 Every SciTECO buffer has its own Scintilla view now.
           This fixes the rubout of the "EB" command since lexer styles
           no longer have to be restored.
           Therefore, it allows writing (bug-free) ED-hooks that setup
           syntax highlighting.
           Scintilla configurations that should apply to all buffers must now
           always be made on all buffers (i.e. their views).
           Q-Registers still share a single Scintilla view.
d9f04a7 Building from source: enable bootstrapping by default
        The language changes frequently. This ensures that an up-to-date version
        of SciTECO is built to run the macros included in the source packages.
        This will NOT work when cross-compiling SciTECO.
        You must first build a version for the build system and cross-compile
        with ./configure --disable-bootstrap
468cb19 added ^# (XOR) operator
3006be5 fixed number formatting for radix > 10.
        This fixes the "\" command and "^E\" string building character
        if the radix is set higher than 10, e.g. "16^R".
0987ca8 Revised function key macros in fnkeys.tes
        This fixes glitches when movement keys are used that would move "dot"
        off-page.
        Also, the "HOME" key binding will jump to the beginning of the line
        skipping any leading whitespace. A second press will jump to the real
        beginning of the line (like "0L").
        The "UP" and "DOWN" key bindings try to keep the column of the previous
        line.
(!)5e1ad77 extended "^U" command:
           allow setting and appending of strings and characters from the expression stack.
           A colon-modified form ":^U" appends characters from the expression stack
           and its string argument.
           This means that integer arguments no longer "pass through" the ^U command.
           It is now more like TECO-11's ^U, but more powerful.
7b9d5ba support new "~" conditional: useful for implying default parameters in macros
        E.g. the conditional expression "~1' implies the value 1.
(!)fa12867 revised "U" command: fail if no argument is provided
           This means that expressions like "Ua" are no longer valid and
           must be written "1Ua" instead.
           The expression "-U" is still allowed as a short-hand for "-1U".
           Also, now there's ":U" which returns a condition code if the
           argument is missing instead of throwing an error.
01a4211 Clarify `symcasecmp` macro in string.tes (documented it)
d59ba50 fixed undoing of initial TECO buffer/document changes
a475ea8 fixed rubbing out local Q-Register modifications in macro calls
1c3b2a9 fixed crashes when pushing operators without corresponding operands.
        Instead an error is thrown.
        This fixes expressions like "++", "+1+", etc.
3c1125c Basic TAB-completion support for EC and EG commands
7746480 added "EG" command: pipe from buffer into Q-Register
1aab71c,
20d1f0e,
acc911a implemented "EC" command (execute operating system command).
        This requires at least libglib v2.34 on Windows.
        On UNIX, pre-v2.34 versions are supported as a workaround (ticket #2).
(!!!)a395c9d changed syntax for long Q-Register names: use [] brackets instead of {}
             This means that expressions like "M{macro}" must now be written
             "M[macro]". This will break all existing macros!!!
             On the other hand, it improves readability of SciTECO macros.
06d0bac fixed reversing the "EW" command when used to save a file with another
        name (save as)
b62f736 depend on Scintilla v3.5.2 and Scinterm v1.5 (included in
        tar balls). This brings many new curses features, e.g. scroll bars
        and new Scintilla lexers. You should refer to the Scintilla v3.5.2
        documentation when setting up SciTECO.
39406f4,
a27b5d4,
30d8bf3 automatically build Scintilla as part of SciTECO's build system:
        this should simplify building SciTECO from source for new users.
        Scintilla is now automatically checked out when cloning the Git repository
        and it is included in every source tar ball.
af17bd7 fixed crash on unexpected semicolon (break from loop)
d94b188 fixed enclosing SciTECO expressions in braces that do not generate any
        values. E.g. this fixes "1<()>".
54de1dc build system improvements
f6fa45e fixed array freeing using delete. Could have resulted in crashes.
793f801 fixed severe bug related to referencing temporary values.
        Fixes many build issues and possible memory corruptions.
dbd252c ncurses: fixed info bar at startup
4ae59fd avoid deprecated glib functions
e5563f8 report argument stack overflows as errors
5e92818 Division by zero no longer crashes SciTECO but throws an error.
707acef,
8046e11,
78ad52e improved and fixed error reporting in general
1f8d558,
abfabda try to recover from out of memory conditions.
        This is ultimately doomed to fail ;-)
d374448 added support for TECO stack tracing.
        Errors in batch mode will now print a TECO stack trace.
0674f29,
6d4668b added EMCurses/Emscripten support.
        Only really "required" by the live demo at http://sciteco.sf.net/
de616e3 Fixed compilation of the GTK+ interface
(!)f510c10 only allow command-line replacements when actually editing the replacement register.
           This helps avoiding to rubout the entire command line by accident.
c5c24b0 updated lexer config: CMake and XML lexing
6f7694e Fixed building on non-C locales (Thanks to Martin Roedel!)

Version 0.5
~~~~~~~~~~~

initial release