With overlapping selections, pasting after breaks assumption of
SelectionList::for_each as our changes are no longer happening in
increasing locations.
We hence cannot rely on the ForwardChangeTracker in that case and
have to rely on the more general (and more costly) ranges update logic.
This interacts poorly with paste linewise pastes and we try to preserve
the current behaviour by tracking the last paste position.
Overall, this change really begs for overlapping selections to be
removed, but we will fix them like that for now.
Fixes#4779
From the issue:
> It often happens to me that I carefully craft a selection with multiple
> cursors, ready to make changes elegantly, only to completely mess it
> up by pressing a wrong key (by merging the cursors for example). Being
> able to undo the last selection change (even if only until the previous
> buffer change) would make this much less painful.
Fix this by recording selection changes and allowing simple linear
undo/redo of selection changes.
The preliminary key bindings are <c-h> and <c-k>.
Here are some other vacant normal mode keys I considered
X Y
<backspace> <minus>
# ^ =
<plus> '
unfortunately none of them is super convenient to type. Maybe we
can kick out some other normal mode command?
---
This feature has some overlap with the jump list (<c-o>/<c-i>) and
with undo (u) but each of the three features have their moment.
Currently there's no special integration with either peer feature;
the three histories are completely independent. In future we might
want to synchronize them so we can implement Sublime Text's "Soft
undo" feature.
Note that it is possible to restore selections that predate a buffer
modification. Depending on the buffer modification, the selections
might look different of course. (When trying to apply an old buffer's
selection to the new buffer, Kakoune computes a diff of the buffers
and updates the selection accordingly. This works quite well for
many practical examples.)
This makes us record the full history of all selections for each
client. This seems wasteful, we could set a limit. I don't expect
excessive memory usage in practice (we also keep the full history of
buffer changes) but I could be wrong.
Closes#898
To be able to undo selection changes, we want to record selections
from all commands that modify selections. Each such command will get
its own private copy of the selections object.
This copy will live until the command is finished executing.
All child commands that are run while the command is executing,
will also use the same copy, because to the user it's all just one
selection change anyway.
Add an RAII object in all places where we might modify selections.
The next commit will use this to create the private selections copy
in the constructor (if there is none) and remove redundant history
items in the destructor.
We could avoid the RAII object in some places but that seems worse.
For lifetimes that don't correspond to a lexical scope, we use a
std::unique_ptr. For lambdas that require conversion to std::function,
we use std::shared_ptr because we need something that's copyable.
This makes the function easier to find for newcomers because
to_string() is the obvious name. It enables format() to do the
conversion automatically which seems like good idea (since there is
no other obvious representation).
Of course this change makes it a bit harder to grep but that's not
a problem with clang tooling.
We need to cast the function in one place when calling transform()
but that's acceptable.
Commit 217dd6a1d (Disable history when executing maps, 2015-11-10)
made it so with
map global normal X %{:echo 123<ret>}
X does not add to prompt history (%reg{:}).
Unfortunately this behavior was not extended to mappings in the "user"
keymap, nor to mappings in custom user modes.
In my experience, not adding to history is almost always the expected
behavior for mappings. Most users achieve this by adding a leading space:
map global user X %{: echo 123<ret>}
but that's awkward. We should have good defaults (no nnoremap)
and map should work the same way across all modes.
Fix this by also disabling history when executing user mappings. This
is a breaking change but I think it only breaks hypothetical scenarios.
I found some uses where user mappings add to history but none of them
looks intentional.
f702a641d1/.config/kak/kakrc (L169)604ef1c1c2/kakrc (L96)d22e7d6f68/kak/kakrc (L71)https://grep.app/search?q=map%20%28global%7Cbuffer%7Cwindow%29%20user%20.%2A%5B%21%3A/%5D%5B%5E%20%5D.%2A%3Cret%3E®exp=true
`x` is often criticized as hard to predict due to its slightly complex
behaviour of selecting next line if the current one is fully selected.
Change `x` to use the previous `<a-x>` behaviour, and change `<a-x>` to
trim to fully selected lines as `<a-X>` did.
Adapt existing indentation script to the new behaviour
This will unfortunately break some use case which will require
using wrapper scripts to add the necessary newline. It is however
harder to do the contrary, and it makes a lot of other use case
possible, such as checksuming.
Fixes#3669
After a while it seems clear changing this is much more ergonomic
and restoring it with pure config is impractical as we need to map
all lower case keys.
Now that Kakoune opts into extended key reporting, <c-i> is correctly
reported and hence needs to be mapped to forward jump.
We still need to keep <tab> mapped to it for legacy terminals.
Should fix#4333
They are quite different use cases, and this allow moving InsertMode
to input_handler.hh which is what uses it.
This also cleans up the code as we can get rid of get_insert_pos and
rely more on SelectionList::for_each.
The current implementation allows users to declare mappings in the
`goto` and `view` modes with uppercase letters, but doesn't consider
case to be meaningful.
This quirk is also inconsistent as hitting an unmapped key will quit
the mode menu without complaints, but hitting a key that isn't in it
will work if it has a lowercase mapping equivalent.
Fixes#3976
The previous code was advancing from the general insertion point
for all selection, instead of iterating only once from insertion
point until the end of inserted text.
Giving an explicit register uses its content for the default value
to use if the user does not enter anything. This enables:
`set-register a %{commands}; execute-keys '"a:<ret>'`
`set-register a %{shell script}; execute-keys '"a|<ret>'`
...
This provides a nice way to avoid the need to escape keys to use
those normal mode commands.
Fixes#3825
The prompt and autocomplete normally wait for `idle_timeout` before showing
suggestions, however commands like `g`, `v`, or the lead-key show Clippy
instantly.
This fixes the issue by making `on_next_key_with_autoinfo()` wait for
`idle_timeout` before displaying suggestions.
Fixesmawww/kakoune#3365Fixesmawww/kakoune#2066
