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Rather than inserting a newline and then looking for leading white space
of the previous line we now gather the white space before newline insertion.
Also we no longer indent empty lines.
Close #472
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Make sure the selection setting code (used to restore selections)
does not move the cursor.
Fix #479
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Terminal.app sets $TERM=xterm-256color and ships a corresponding
terminfo description advocating that it is capable of color changes
to the 256 color palette when in fact it can not.
We introduce a new boolean option "change-256colors" which is
true by default but can be used to disable color changes. It is
automatically set if Terminal.app is detected using $TERM_PROGRAM.
This should fix display artifacts as described in #456.
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Currently the key handling functions do not know through which mapping
they were invoked. As an example the `count` handler exploits the
implementation detail that the input queue is stored in contiguous
memory, meaning `keys[-1]` gives access to the digit being pressed.
This adds infrastructure to keep track of the two most recently processed
keys of the input queue.
The information is guaranteed to be accurate for the initial invocation
of the key handler but will be overwritten in case new keys are pushed
to the input queue (e.g. through vis_keys_feed).
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<Enter> at the end of the file now inserts two newlines, unless there is
already one in place. This ensures that in 'normal' operation the file
is always new line terminated (as mandated by POSIX). It also means that
there is no problem displaying the right amount of ~ symbols at the end
of the file.
Unlike in vim the cell beyond the end of the file remains adressable
even in normal mode. This means something like the following (starting
from an empty file) might be a little confusing:
o<Escape><Left>dd
Because the starting position is beyond the last newline of the file,
nothing will be deleted.
For now we prefer to avoid the additional complexity, and difference
in behavior between normal and insert mode, needed to fix this slight
inconsistency.
Fix #294
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Fix #371
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Fix #372
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Fix #448
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The vis_keys_feed function is currently unaffected by this change.
It still creates individual undo points. While this is probably
undesirable from an API point of view, it keeps the lua based tests
that use undo points working.
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Previously if you had a mapping for both `a` and `ab` the latter would
in effect be unreachable because the greedy search would always match
and then execute the former. With the new behavior we keep reading keys
until we have a non ambigious sequence. That is after pressing `a` nothing
will happen, if the next key is a `b` we will execute the `ab` mapping
otherwise we will perform `a` and whatever the action is for the next key.
Close #386
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These are currently only updated for `x` and `y` sam commands,
whether they should be updated for other search related activities
(`/`, `?`, `n`, `N`, `*`, `#` etc.) needs to be investigated.
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The handling of :unmap needs to be revisited at some point.
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This should avoid undefined pointer comparisons.
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When given a mapping like:
:map! insert >> ><>x>
whose end is a prefix of another mapping we should still remove all
already consumed keys from the input queue.
Fixes #436
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Fixes #434
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It can happen that the Buffer content used for the input queue becomes
<\000> where the NUL byte is intended to terminate the queue, but termkey
happily parses it and because it is delimited by < and > on both sides
we then interpret it as a key. In input mode this leads to the insertion
of a NUL byte which is displayed as ^@.
Close #432
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The very first thing we do if that check is false, is return from the function.
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Move all signal handling code out of "library" code into user application.
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If the caller of vis_pipe is not interested in the output, redirect it
to /dev/null and close the pipe. Otherwise we would wait for possible
output (which might never arrive) only to throw it away.
As a consequence background processes can now be started with:
:> { plumber <&3 3<&- & } 3<&0 2>&-
whereas before one also had to explicitly close stdout:
:> { plumber <&3 3<&- & } 3<&0 1>&- 2>&-
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The `:!` command did redirect stdout to a pipe which was used by
`vis-menu` to return the selected entry. However, this breaks
other interactive commands such as `:!/bin/sh` where command
output was never displayed. Instead we modified `vis-menu` to
re-open /dev/tty for its user interface which makes it work
as a regular filter `:|`
This patch also obsoletes the interactive flag previously passed
to the vis_pipe function. Interactive mode is instead enabled
by piping an invalid range.
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The first argument is the file object while the second argument denotes
the full path to which it will be written. Path might be `nil` if the
file is going to be written to stdout.
The Lua function is expected to return a boolean value indicating whether
the write operation should proceed or be aborted.
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The passed path can be different from file.name for instance when
opening a file `a` and then doing `:w b` where file.name will be the
former and path the latter.
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Indicating that the event is triggered *after* a successfull write.
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We need to push keys individually to the input queue such that
the state machine can advance and record keys into the operator
macro if necessary.
Previously feeding the following input:
isome text<Escape>.
would not work as expected because the complete key stream
was pushed to the input queue at the same time during which
the operator macro was not yet active. Thus the dot command
at the end would have nothing to repeat.
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Do not initalize curses UI before it is actually needed.
Move vis command line argument parsing logic into main.c.
This fixes `vis -v` output and exit status.
Fix #351
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Add another layer of indirection, move actual event generation
code to a dedicated function.
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In preparation to move argument parsing code out of vis.c.
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We first try $SHELL and then fall back to the shell field of the password
file entry (/etc/passwd).
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Do not take snapshots after every operation in insert/replace mode.
As an example up until now we would take a snapshot after every
<Backspace>/<Delete> press, hence when undoing changes each character
would be restored individually. The same applies for <C-w> and related
actions.
From now on we only snaphost when:
- transitioning from insert/replace mode to normal mode (but not when
switching to operator pending mode)
- an operation takes place from normal mode
- an idle time expires in normal/replace mode
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They both perform a motion before changing mode.
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We should only attempt to parse special keys if they are
delimited by angle brackets i.e. <Key> but not Key.
Previously we would wrongly skip over the latter.
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The mapped to latin key has typically a shorter UTF-8 representation,
thus explicitly copy the NUL terminator to properly truncate the new
key value.
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The language map translation should not take modifiers into account.
For example if `a` is mapped to `b` then `<M-a>` should also be mapped
to `<M-b>`.
Fix #404
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