It backward-deletes a word like Ctrl-W, but it has a slightly
different definition of what a word is. For example, with the
caret behind `gcc -fsanitize=address`, Ctrl-W would delete
'-fsanitize=address' but Alt-backspace would only delete 'address'.
All these shortcuts treat consecutive alnums as a word, not consecutive
non-spaces.
For example, `alias KILL='kill -9'` can now be written by typing it
out lowercase, then hitting ctrl-a alt-f alt-u.
Ctrl-W still treats a word as a sequence of non-spaces. Alt-backspace
in a future patch will add the ability to backward-delete a word
that's a sequence of alnums.
This adds Alt-f to go forward by a word, and Alt-b to go backward
by a word (like ctrl-arrow-left / ctrl-arrow-right already do).
Behind the scenes, alt-key is implemented by sending <esc> followed
by that key, and typing <esc> f/b for moving by a word hence works
too (in all other shells too, not just in Serenity's).
While here, rename some InputState enum values to make the slightly
expanded use of <esc> clearer, and expand a few comments.
Also move the existing backspace lambda out of the loop.
The do_delete() extraction fixes a minor bug where
InputState::ExpectTerminator wasn't entered if delete was pressed at the
very end of a line. Now that this is fixed, there's no more
"LibLine: Unhandled final: 7e (~)" when hitting delete at the end of the
line.
Get rid of the weird old signature:
- int StringType::to_int(bool& ok) const
And replace it with sensible new signature:
- Optional<int> StringType::to_int() const
This commit makes LibLine handle interrupts (as reported via
interrupted() and resized()) again.
There is a little catch with the shell:
```
$ ls |
pipe> <C-c> (prompt stays here until a key is pressed)
```
.. and make travis run it.
I renamed check-license-headers.sh to check-style.sh and expanded it so
that it now also checks for the presence of "#pragma once" in .h files.
It also checks the presence of a (single) blank line above and below the
"#pragma once" line.
I also added "#pragma once" to all the files that need it: even the ones
we are not check.
I also added/removed blank lines in order to make the script not fail.
I also ran clang-format on the files I modified.
We just look at $TERM and refuse to emit any escape sequences if it
doesn't start with "xterm".
This could be made much better, at detecting, and at not caling
getline().
And move canonicalized_path() to a static method on LexicalPath.
This is to make it clear that FileSystemPath/canonicalized_path() only
perform *lexical* canonicalization.
This fixes a bunch of FIXME's in LibLine.
Also handles the case where read() would read zero bytes in vt_dsr() and
effectively block forever by erroring out.
Fixes#2370
This commit adds back suggestion pagination, and makes it 10x better.
Also adds a "< page m of n >" indicator at the bottom if there are more
suggestions than would fit in a page.
It properly handles cycling forwards and backwards :^)
`CompletionSuggestion(text, ForSearch)` creates a suggestion whose only
purpose is to be compared against.
This constructor skips initialising the views.
To achieve this, the API was tweaked a bit to allow for easier tracking
of completions.
This API change is non-disruptive to any application that does not use
anchored styles.
