This PR changes the interface of ContextProvider, allowing it to inspect
*all* variables set so far during the process of building
`TaskVariables`. This makes it possible to capture e.g. an identifier in
tree-sitter query, process it and then export it as a task variable.
Notably, the list of variables includes captures prefixed with leading
underscore; they are removed after all calls to `build_context`, but it
makes it possible to capture something and then conditionally preserve
it (and perhaps modify it).
Release Notes:
- N/A
Release Notes:
- Improved tasks modal by highlighting a distinction between a task
template and concrete task instance and surfacing available keybindings
more prominently. Task templates are now always available in the modal,
even if there's already a history entry with the same label.
- Changed default key binding for "picker::UseSelectedQuery" to `opt-e`.
Part of https://github.com/zed-industries/zed/issues/5141
* adds "run selection" and "run file" tasks for bash and Python.
* replaces newlines with `\n` symbols in the human-readable task labels
* properly escapes task command arguments when spawning the task in
terminal
Caveats:
* bash tasks will always use user's default shell to spawn the
selections, but they should rather respect the shebang line even if it's
not selected
* Python tasks will always use `python3` to spawn its tasks now, as
there's no proper mechanism in Zed to deal with different Python
executables
Release Notes:
- Added tasks for bash and Python to execute selections and open files
in terminal
