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this avoids some problematic includes, so we no longer have
to #undef interface.
Also it should speed up building a bit.
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* the registers beginning with "$" are exported into sub-process
environments. Therefore macros can now modify the environment
(variables) of commands executed via EC/EG.
A variable can be modified temporarily, e.g.:
[[$FOO] ^U[$FOO]bar$ EC...$ ][$FOO]
* SciTECO accesses the global environment registers instead of
using g_getenv(). Therefore now, tilde-expansion will always
use the current value of the "$HOME" register.
Previously, both register and environment variable could diverge.
* This effectively fully maps the process environment to a subset of
Q-Registers beginning with "$".
* This hasn't been implemented by mapping those registers to
special implementations that updates the process environment
directly, since g_setenv() is non-thread-safe on UNIX
and we're expected to have threads soon - at least in the GTK+ UI.
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* expands to the value of $HOME (the env variable instead of
the register which currently makes a slight difference).
* supported for tab-completions
* supported for all file-name accepting commands.
The expansion is done centrally in StateExpectFile::done().
A new virtual method StateExpectFile::got_file() has been
introduced to pass the expanded/processed file name to
command implementations.
* sciteco(7) has been updated: There is now a separate section
on file name arguments and file name handling in SciTECO.
This information is important but has been scattered across
the document previously.
* optimized is_glob_pattern() in glob.h
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working directory
* FG stands for "Folder Go"
* FG behaves similar to a Unix shell `cd`.
Without arguments, it changes to the $HOME directory.
* The $HOME directory was previously only used by $SCITECOCONFIG on Unix.
Now it is documented on its own, since the HOME directory should also
be configurable on Windows - e.g. to adapt SciTECO to a MinGW or Cygwin
installation.
HOME is initialized just like the other environment variables.
This also means that now, the $HOME Q-Register is always defined
and can be used by platform-agnostic macros.
* FG uses a new kind of tab-completion: for directories only.
It would be annoying to complete the FG command after every
directory, so this tab-completion does not close the command
automatically. Theoretically, it would be possible to close
the command after completing a directory with no subdirectories,
but this is not supported currently.
* Filename arguments are no longer completed with " " if {} escaping
is in place as this brings no benefit. Instead no completion character
is inserted for this escape mode.
* "$" was mapped to the current directory to support an elegant way to
insert/get the current directory.
Also this allows the idiom "[$ FG...new_dir...$ ]$" for changing
the current directory temporarily.
* The Q-Register stack was extended to support restoring the string
part of special Q-Registers (that overwrite the default functionality)
when using the "[$" and "]$" commands.
* fixed minor typos (american spelling)
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* activated via bit 4 of the ED flag (enabled by default)
* automatic EOL guessing on file loading and translation to LFs.
* works with files that have inconsistent EOL sequences.
* automatic translation to original EOL sequences on file saving
* works with inconsistent EOL sequences in the buffer.
This should usually not happen if the file was read in with
automatic EOL translation enabled.
* also works with the EC and EG commands
* performance is OK, depending on the file being translated.
When reading files with UNIX EOLs, the overhead is minimal
typically-sized files. For DOS EOLs the overhead is larger
but still acceptable.
* Return (line feed) is now an immediate editing command.
This centralizes EOL sequence insertion.
Later, other features like auto-indent could be added to
the editing command.
* get_eol() has been moved to main.cpp (now called
get_eol_seq()
* Warn if file ownership could not be preserved when
saving files.
* IOView has been almost completely rewritten based
on GIOChannels. The EOL translation code is also in IOView.
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* It is no longer possible to accidentally open save point files
of the same or another SciTECO instance when typing something like
EB*.cpp$
* The use of a trailing ~ is common among editors. These files
will be recognized more easily as temporary by users.
* People will often already have VCS ignore rules for files with
trailing tilde. Therefore SciTECO savepoints will often be
already ignored by VCS.
* Since they still have a unique ".teco" prefix, they will not
be confused by other programs as backup files.
* Also mention in sciteco(1) that save point files are hidden on
Windows.
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* acts as a safe-guard against uninterrupted infinite loops
or other operations that are costly to undo in interactive mode.
If we're out of memory, it is usually too late to react properly.
This implementation tries to avoid OOMs due to SciTECO behaviour.
We cannot fully exclude the chance of an OOM error.
* The undo stack size is only approximated using the
UndoToken::get_size() method.
Other ways to measure the exact amount of allocated heap
(including size fields in every heap object or using sbrk(0) and
similar) are either costly in terms of memory or platform-specific.
This implementation does not need any additional memory per heap
object or undo token but exploits the fact that undo tokens
are virtual already. The size of an undo token is determined
at compile time.
* Default memory limit of 500mb should be OK for most people.
* The current limit can be queried with "2EJ" and set with <x>,2EJ.
This also works interactively (a bit tricky!)
* Limiting can be disabled. In this case, undo token processing
is a bit faster.
* closes #3
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* added platform-dependant file_is_visible() function
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* EW can save Q-Registers now
* the new E% may be used to save a q-register without making it
the current document
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this will allow us to use the same algorithms for loading and saving
Q-Registers (from/to file).
* Saving with EW when a Q-Reg is edited has been fixed (was broken earlier)
* SciTECO save point files are now named .teco-X-BASENAME
When using IOView for Q-Regs, there will be no way to sensible count
the save points. Each write of a Q-Reg may be to another file.
Therefore, we number save-points globally.
If the sequence of writes has to be reconstructed manually,
one can still look at the save point files' modification dates
* give more informative error messages when saving a file fails
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