Prior to this change, for bindings which have script commands, the
inputter would execute them directly. However an upcoming fix for #7483
will require more integration with the reader. Switch to a new model where
the reader passes in a function to use for executing script commands.
When typing into the command line, some actions should trigger repainting,
others should kick off syntax highlighting or autosuggestions, etc. Prior
to this change, these were all triggered in an ad-hoc manner. Each
possible
This change centralizes the logic around repainting. After each readline
command or text change, we compute the difference between what we would
draw and what was last drawn, and use that to decide whether to repaint
the screen.
This is a fairly involved change. Bugs here would show up as failing to
redraw, not reacting to a keypress, etc. However it better factors the
readline command handling from the drawing.
This was always awkward as fish script, and had problems with
interrupting the autoloading.
Note that we still leave the old function intact to facilitate easier
upgrading for now.
Fixes#7145.
This patch fixes an underflow in the jump family of readline commands
when called via `commandline -f` outside of a bind context such as
`commandline -f backward-jump`. To reproduce, run that command at a
prompt and the shell will crash with a buffer underlow.
This happens because the jump commands have non-zero arity, requiring a
character event to be pushed on the function args stack. Pushing the
character event is handled in `function_push_args`, called by
`inputter_t::mapping_execute`, which checks the arity of the function
and enqueues the required number of charcter events. However,
`builtin_commandline` calls `reader_queue_ch`, which in turn calls
`inputter_t::queue_ch`, which immediately enqueues the readline event
without calling `function_push_args`, so the character event is never
pushed on the arg stack.
This patch adds a check in inputter_t::queue_ch which checks if the
character event is a readline event, and if so, calls
`function_push_args`.
This updates the behavior of tilde to match the behavior found in vim.
In vim, tilde toggles the case of the character under the cursor and
advances one character. In visual mode, the case of each selected
character is toggled, the cursor position moves to the beginning of
the selection, and the mode is changed to normal. In fish, tilde
capitalizes the current letter and advances one word. There is no
current tilde command for visual mode in fish.
This patch adds the readline commands `togglecase-letter` and
`togglecase-selection` to match the behavior of vim more closely. The
only difference is that in visual mode, the cursor is not modified.
Modifying the cursor in visual mode would require either moving it in
`togglecase-selection`, which seems outside its scope or adding
something like a `move-to-selection-start` readline command.
This adds a new readline command self-insert-notfirst, which is
analogous to self-insert, except that it does nothing if the cursor
is at the beginning. This will serve as a higher-performance implementation
for stripping leading spaces on paste.
Add the input function undo which is bound to `\c_` (control + / on
some terminals). Redoing the most recent chain of undos is supported,
redo is bound to `\e/` for now.
Closes#1367.
This approach should not have the issues discussed in #5897.
Every single modification to the commandline can be undone individually,
except for adjacent single-character inserts, which are coalesced,
so they can be reverted with a single undo. Coalescing is not done for
space characters, so each word can be undone separately.
When moving between history search entries, only the current history
search entry is reachable via the undo history. This allows to go back
to the original search string with a single undo, or by pressing the
escape key.
Similarly, when moving between pager entries, only the most recent
selection in the pager can be undone.
Prior to this fix, self-insert would always wait for a new character.
Track in char_event what sequence generated the readline event, and then
if the sequence is not empty, insert that sequence.
This will support implementing the space binding via pure readline
functions.
This sequence can be generatd by control-spacebar. Allow it to be bound
properly.
To do this we must be sure that we never round-trip the key sequence
through a C string.
This makes the following changes:
1. Events in background threads are executed in those threads, instead of
being silently dropped
2. Blocked events are now per-parser instead of global
3. Events are posted in builtin_set instead of within the environment stack
The last one means that we no longer support event handlers for implicit
sets like (example) argv. Instead only the `set` builtin (and also `cd`)
post variable-change events.
Events from universal variable changes are still not fully rationalized.
The enum starts at 0 (defined to be!), so we can eliminate this one.
That allows us to remove a reliance on the position of
beginning_of_line, and it would trigger a "type-limits" warning.
Also leave a comment because I actually hit that.
This runs build_tools/style.fish, which runs clang-format on C++, fish_indent on fish and (new) black on python.
If anything is wrong with the formatting, we should fix the tools, but automated formatting is worth it.
