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We cannot rely on the central teco_cmdline_update() call per keypress
in this case.
The analogous call was removed in 4e6ddd6c329d56055a732c6344df019f0d997aaf,
so this was a recent regression.
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rendered as "TAB" without any indentation
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0x404040 (COLOR_LBLACK) is a poor choice since on terminal emulators
with less than 16 colors, it would be rendered in black (and thus be invisible).
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replacement ({...})
* The line end type and tab mode is apparently a property of the document.
Therefore it was lost when exchanging the command line's document during command line replacement.
* Instead, the old command line is now stored in a string.
* During replacement we delete and append only the part of the command line that changed.
This ensures that we don't have to restyle the entire command line with every single
replacement (even if it is at the end of the command line).
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This requires enhanced INDIC_STRAIGHTBOX semantics, which are not yet upstream in Scinterm.
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* This currently needs a yet unmerged patch, fixing the light colors.
* Scinterm no longer systematically initializes the color pairs, so
we cannot predict their numbers - instead we initialize color pairs
on demand and store them in a hash map, very similar to what Scinterm
does internally.
* Scinterm v5.5 can use arbitrary RGB colors now by automatically
allocating curses colors and pairs.
We do not expose this in SciTECO yet, although that would also
be possible.
It has to be decided first whether the special predefined colors
will continue to live in the same namespace along with "true"
RGB colors.
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This was broken if you configured a command line with a height > 1.
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SC_LINE_END_TYPE_NONE
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* This allows for several customizations.
* You can simply increase the visible command line history.
For that you must also set SCI_SETWRAPMODE(SC_WRAP_CHAR).
An example was added to fallback.teco_ini.
* You could also set SCI_SETLINEENDTYPESALLOWED(SC_LINE_END_TYPE_DEFAULT)
to see the structure of inserted text.
* Alternatively we could have introduced a new command like EP or FW
and also overload it to replace the current ED&2048 (e.g. -EP and EP).
In DEC TECO `W` comes closest to what 5EJ now does.
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the current line as well
* This optimization is unnecessary for regular TECO scripts unless you write stupendously long lines.
On the command line macro however, we were always restyling the entire command line with every insertion
or rubout since the command line view uses single line mode by default.
Even if you enable a multi-line command line with regular line breaks, it's unlikely that you would insert
many line breaks except when inserting text into the buffer.
* We will now during insertion into the command line view style from the beginning of the last regular
command.
* During rub out from the command line, we still won't have enough information about where the previous
valid start state was, so we will frequently have to restyle the entire command line.
This might be worked around by adding a cmdline-view-specific hack if it turns out to be relevant
on very long command lines and slow computers.
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These are equivalent, but LINES and COLS are shorter.
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enables syntax highlighting on the command line
* M[lexer.set.cmdline] can be used to set up syntax highlighting on the command line
(if desired).
* Color schemes with light-dark themes (solarized.tes) are now responsible
to update the command line view as well.
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* Instead of rendering a teco_string_t into a Scintilla view (GTK)
and an ncurses window (Curses), it is now a Scintilla view and document
that is modified directly.
* Reduces redundancies between GTK and Curses UIs.
* It will be more efficient on very large command lines, especially on GTK.
* We can now redirect Scintilla messages to the command line view in order
to configure syntax highlighting, the margin, rubout indicator style and
scroll behavior (TODO).
* This will also simplify the configuration of multi-line command lines (TODO).
* Since INDIC_PLAIN is not supported by Scinterm, rubbed out command lines
are now styled with INDIC_STRAIGHTBOX (background color).
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* This requires the new SCI_SETTABDRAWMODE(SCTD_CONTROLCHAR).
* It makes no sense to let TAB indent in TECO code as it can be
the insert-with-tab command (^I).
On the other hand large `I`-blocks could include TABs which are
actually meant as indentations.
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This simplifies teco_interface_cmdline_update() and prepares for backing the
command line macro itself with a Scintilla view (teco_view_t).
The latter will avoid unnecessary recalculations when inserting characters
into the command line and to factor out redundancies with the Curses UI.
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* When typing nEBfilename$ (n != 0) you would find out that the construct is invalid
only after typing out the entire command.
We now throw an error immediately, ie. only Escape or string termination will be expected
in interactive mode.
* In batch mode, nothing should have changed.
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My patch has been merged, so there is no need to keep the workaround
in newer versions.
See https://lists.gnu.org/archive/html/bug-ncurses/2025-09/msg00027.html
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* We have to process several mouse events for every KEY_MOUSE.
* The order of events is sort of arbitrary after clicking the middle mouse button
in some terminal emulators like st and Xterm.
Therefore BUTTON2_PRESSED is now ignored and resynthesized when
receiving BUTTON2_RELEASED.
This fixes loosing middle click events.
fnkeys.tes only processes the RELEASED event anyway.
I am still looking for a fix to contribute to the ncurses project.
* In GNOME Terminal and Xterm with the SGR mouse protocol,
you can receive bogus BUTTON3_PRESSED events when left scrolling.
There is an upstream fix.
As a workaround -- we will have to live with outdated ncurses
versions anyway -- we prevent resetting the mouse mask unnecessarily.
This limits the effects to a single bogus BUTTON3_PRESSED event.
Unfortunately, it's not easily possible to force ncurses into using
the X10 mouse protocol even if the terminfo entry claims SGR compatibility.
See also https://lists.gnu.org/archive/html/bug-ncurses/2025-09/msg00016.html
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We have topics for all colon-modified variants.
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statement
* this is a SciTECO extension - it's not in TECO-11
* Allows for select-case-like constructs with default-clauses as in
:Os.^EQa$
!* default *!
!s.foo!
!* ... *!
!s.bar!
!* ... *!
* Consistent with nOlabel0,label1,...$ if <n> is out of range.
Unfortunately this form of computed goto is not applicable when
"selecting" by strings or non-consecutive integers.
* In order to continue after the <:O> statement, we must keep the
program counter along with the label we were looking for.
At the end of the macro, the PC is restored instead of throwing
an error.
* Since that would be very inefficient in loops - where potentially
all iterations would result in rescanning till the end of the
macro - we now store a completed-flag in the goto table.
If it is set while trying to :O to an unknown label, we can
just continue execution.
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empty labels are ignored
* This has long been a TECO-11 incompatibility.
* The first label in a list has index 0, i.e. `1Ofoo,bar$` jumps to label `!bar!`.
Consequently 0 is also implied, so `Olabel$` continues to do what you expect.
* `0Ofoo$` was previously also jumping to `!foo!` which was inconsistent:
All invalid indexes should do nothing, i.e. execution continues after the go-to command.
* Fixed handling of empty labels as in `1Ofoo,,bar$` - execution should also continue
after the command.
This eases writing "default" clauses immediately after the go-to.
* The ED hook values now also begin at 0, so most existing ED hook macros should
continue to work.
* Similarily, the mouse events returned by -EJ also begin at 0 now,
so fnkeys.tes continues to work as expected.
* It's still very possible of course that this breaks existing code.
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* Gtk 3.24 has been introduced accidentally in 9e3746a4
due to GtkEventControllerScroll.
* It would be possible to still support v3.12 by partially
reversing 9e3746a4 and conditionally including teco_interface_scroll_cb().
But it's probably not worth the trouble.
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This broke builds e.g. on Ubuntu 20.04.
Regression was introduced in 51bd183f064d0c0ea5e0184d9f6b6b62e5c01e50.
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* It requires a forced refresh on startup (even though that should be the
default). Otherwise, it wouldn't print the info line correctly.
* Redirect stdin and pass it to newterm() to fix key queuing.
Probably necessary for supporting ncurses on NetBSD as well.
* Avoid doupdate() if screen is too small: fixes crashes for very
small windows.
* Updated Scintilla: There were some implicit typing assumptions,
that are broken by this platform.
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corner cases)
* pkg-config check for `ncurses` fails if it failed previously for `ncursesw`.
This is the case e.g. for ncurses from NetBSD's pkgsrc.
* No longer assume that any libncurses is not enhanced (X/Open compatible).
* SciTECO and Scinterm require to find a curses.h in the include paths.
The ncurses check must therefore not be limited to the first best
ncurses/ncurses.h and the like.
* We now always check for X/Open compatibility and always require
a curses.h in the standard directories or as given by pkg-config.
* AX_WITH_CURSES was radically rewritten and is now called AX_WITH_NCURSES.
* --with-interface=netbsd-curses gets its own detection code.
It always requires a curses.h in the standard paths and a libcurses.
It should now be fixed for real NetBSD installations if the ncurses
port is installed as well.
* Unified all of the curses-arguments to CURSES_CFLAGS and CURSES_LIBS.
There is no reason we need PDCURSES_CFLAGS, XCURSES_CFLAGS etc.
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teco_interface_init_screen()
User messages printed in interative mode aren't currently fully preserved on stdout/stderr
since they are redirected to /dev/null.
Only messages that are not flushed out will be preserved.
Unless you redirect stdout/stderr of SciTECO of course since in this case no redirection
is necessary.
This is probably tolerable esp. once we support multi-line messages in the UIs.
At least it would be tricky to work around.
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* Messages can be arbitrarily long, e.g. the following could provoke crashes in interactive mode
`1000<@I/X/> HX$`
It's hard to turn into a test case, though, as you could always increase the buffer
size in teco_interface_msg().
* The message length is now only limited by RAM.
* This implementation is less effective, but code opting for efficience,
including all programmable user messages, should not rely on the printf-API anyway
but use teco_interface_msg_literal().
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* At least the MSVCRT does this by default, i.e. the translation mode of stdout
is not _O_BINARY.
* This broke piping through SciTECO with --stdin --stdout, as this relies on SciTECO's
builtin EOL normalization. Instead, you would get DOS linebreaks on output even if the
source stream contains only UNIX linebreaks.
* It would also break binary filters.
* It seems to be safe to print only LF also for regular stdio (help and error messages),
so I simply disaply the stdout (and stdin and stderr) EOL translation globally.
* Also fixes Troff warnings due to the .in preprocessor writing output with DOS linebreaks.
* Added a test case. All future platforms shouldn't perform any unexpected EOL translations
on output.
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special Q-registers ^Ax
* The unnamed buffer is also used for reading from --stdin, so you couldn't practically combine
--stdin with passing command-line arguments to macros.
* The old approach of passing command-line arguments via lines in the
unnamed buffer was flawed anyway as it wouldn't work with filenames containing LF.
This is just a very ancient feature, written when there weren't even long Q-reg names in SciTECO.
* You can now e.g. pipe into SciTECO and edit what was read interactively, e.g. `dmesg | sciteco -i`.
You can practically use SciTECO as a pager.
* htbl.tes is now a command-line filter (uses -qio).
* grosciteco.tes reads Troff intermediate code from stdin, so we no longer need
"*.intermediate" temporary files.
* added a getopt.tes test case to the testsuite.
* This change unfortunately breaks most macros accepting command-line arguments,
even if they used getopt.tes.
It also requires updating ~/.teco_ini - see fallback.teco_ini.
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--stdin and --stdout options
* htbl.tes now reads from stdin and writes to stdout.
Allows avoiding temporary `*.htbl` files
* grosciteco.tes still cannot be simplified since --stdin cannot be combined with
passing command-line arguments (FIXME).
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* In principle --stdin and --stdout could have been done in pure TECO code using the
<^T> command.
Having built-in command-line arguments however has several advantages:
* Significantly faster than reading byte-wise with ^T.
* Performs EOL normalization unless specifying --8bit of course.
* Significantly shortens command-lines.
`sciteco -qio` and `sciteco -qi` can be real replacements for sed and awk.
* You can even place SciTECO into the middle of a pipeline while editing
interactively:
foo | sciteco -qio --no-profile | bar
Unfortunately, this will not currently work when munging the profile
as command-line parameters are also transmitted via the unnamed buffer.
This should be changed to use special Q-registers (FIXME).
* --quiet can help to improve the test suite (TODO).
Should probably be the default in TE_CHECK().
* --stdin and --stdout allow to simplify many SciTECO scripts, avoiding
temporary files, especially for womenpage generation (TODO).
* For processing potentially infinite streams, you will still have to
read using ^T.
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commands with multiple string arguments
* When `@`-modifying a command with several string arguments and choosing `{` as the alternative
string termination character, the parser would get totally confused.
Any sequence of `{` would be ignored and only the first non-`{` would become the termination character.
Consequently you also couldn't choose a new terminator after the closing `}`.
So even a documented code example from sciteco(7) wouldn't work.
The same was true when using $ (escape) or ^A as the alternative termination character.
* We can now correctly parse e.g. `@FR{foo}{bar}` or `@FR$foo$bar$` (even though the
latter one is quite pointless).
* has probably been broken forever (has been broken even before v2.0).
* Whitespace is now ignored in front of alternative termination characters as in TECO-64, so
we can also write `@S /foo/` or even
```
@^Um
{
!* blabla *!
}
```
I wanted to disallow whitespace termination characters, so the alternative would have been
to throw an error.
The new implementation at least adds some functionality.
* Avoid redundancies when parsing no-op characters via teco_is_noop().
I assume that this is inlined and drawn into any jump-table what would be
generated for the switch-statement in teco_state_start_input().
* Alternative termination characters are still case-folded, even if they are Unicode glyphs,
so `@IЖfooж` would work and insert `foo`.
This should perhaps be restricted to ANSI characters?
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and also the CTRL+L immediate editing command
* ^W can be added to loops in order to view progress in interactive mode.
It also sleeps for a given number of milliseconds (10ms by default).
* In batch mode it is therefore the sleep command.
* Since CTRL+W is an immediate editing command, you will usually type it Caret+W.
ASCII 23 however will also be accepted.
* While ^W only updates the screen, you can force a complete redraw by pressing CTRL+L.
This is what most terminal applications use for redrawing.
It will make it harder to insert ASCII 12, but this is seldom necessary since it
is a form feed.
^L (ASCII 12 and the upcaret variant ) is still a whitespace character and therefore treated as a NOP.
* DEC TECO had CTRL+W as the refresh immediate editing command.
Video TECO uses <ET> as a regular command for refreshign in loops.
I'd rather keep ET reserved as a potential terminal configuration command
as in DEC TECO, though.
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* DEC TECO had an <EO> command.
In contrast to DEC TECO's implementation, the value reported by
<EO> encodes a major.minor.micro semantic version.
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partially replaces ^B
* :^H and ::^H now return the timestamps, while ^B only returns the date.
* Pressing CTRL+H will rubout, so you will usually write it in upcaret mode.
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stdin or the user
* n:^T always prints bytes (cf. :^A)
* ^T without arguments returns a codepoint or byte from stdin.
In interactive mode, this currentply places a cursor in the message line and waits for a keypress.
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* `0,2ED` is roughly equivalent to `-EX`
* `ED&2` can be used to query whether EX has been run.
This is useful if macros can run EX.
* `2,0ED` could be used to cancel the effect of EX.
* But the real motivation is for implementing a REPL script.
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In particular, fixes the test case `3<255=>` which would print
only one number in interactive mode.
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causing assertions when entering interactive mode
Also added a regression test case.
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* When writing UTF-8, we must first peek in reverse order since we can
only write from left to right.
* When writing in raw ANSI, we can immediately pop the values from the stack
but must write in reverse.
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* Practically all calls to teco_expressions_args() must be preceded by teco_expressions_eval().
* In code paths where we know that teco_expressions_args() > 0, it is safe
to call teco_expressions_pop_num(0) instead of teco_expressions_pop_num_calc().
This is both easier and faster.
* teco_expressions_pop_num_calc() is for simple applications where you just want to get
a command argument with default (implied) values.
Since it includes teco_expressions_eval(), we can avoid superfluous calls.
* -EC...$ turned out to be broken and is fixed now.
A test case has been added.
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current buffer
* refactored some code that is common with Xq into teco_get_range_args().
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* ^A uses the default code page without colon, just like ^U/EU.
This is usually UTF8, unless you run with --8bit.
It would make just as little sense to inherit the codepage from the
current document.
* Ensures that code like `:^A^E<0xFF>^A` really outputs byte 0xFF.
* DEC TECO doesn't have the colon modifier, but it has a colon modifier
for ^T to enforce raw output.
In SciTECO, the ^T vs. :^T distinction will also be between default codepage
and ANSI. It makes sense because ^T should treat its numeric arguments like <I>
for consistency.
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inserting it
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* There are some calls of teco_interface_msg() with constant strings,
but these are not convenient to convert as the teco_interface_msg_literal()
does not yet support -1 for the string length.
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