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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 |
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Regression test
===============
:unified-context-diff: https://en.wikipedia.org/wiki/Diff#Unified_format
Source structure
----------------
----------------------------------------------
.
├── unit
│ └── …
└── compose
└── …
├── [enabled] → applicability
├── [rc] → configuration
├── [in] → start file
├── cmd → command
├── [script] → UI automation
├── [out] → expected end file
├── [kak_*] → expected expansion values
└── [error] → expected error
----------------------------------------------
Usage
-----
To test, just type +run [test]+ in the +test+ directory.
It will print each passing test. If a test fails, a {unified-context-diff}[unified context diff]
is printed showing the test’s expected output and the actual output.
Details
-------
+enabled+ is optional.
If it exists and is executable,
it is invoked with no parameters.
If it exits with a non-zero exit code,
the test is assumed to be not applicable to the current environment
(for example, a test for OS-specific integration
isn't useful on a different OS)
and will be silently skipped.
+rc+ is optional
and should contain a sequence of commands,
_e.g._, +set-option+, +define-command+, +declare-option+.
+rc+ is sourced and evaluated before the +cmd+ key sequence is executed.
+in+ is optional
and should contain the initial text loaded into the input buffer
for editing by the +cmd+ key sequence.
+cmd+ is required
and should contain a key sequence that will edit the input buffer.
+cmd+ is executed after the +rc+ command sequence is sourced.
+script+ is optional
and is a shell-script that will be sourced after +cmd+ is executed.
The special +ui_in+ function sends a string
(expected to be a JSON UI message,
see `doc/json_ui.asciidoc` in the Kakoune source)
to the running Kakoune instance,
while the special +ui_out+ function
checks the next JSON UI messages from Kakoune
against its arguments,
and fails the test if any of them are different.
You can also say `ui_out -ignore N` to ignore the next _N_ JSON UI messages,
where _N_ is a positive integer.
+out+ is optional
and should contain the expected text generated by the +cmd+ key sequence.
If the actual +out+ text
does not match the expected content in the corresponding file,
the unit test will fail.
If there is no +out+
then the unit test will always succeed.
Any +kak_*+ files should match the corresponding expansion
after +cmd+ is complete.
For example, a file named +kak_selection_desc+
should match the +%val{selection_desc}+ expansion.
See `:doc expansions` for a list of available expansions.
If there is an +error+ file,
the test is expected to produce an error.
If Kakoune exits successfully,
or if it fails with the wrong error,
the test is marked as a failure.