When checking if we're breaking in the middle of a multi-column
character, we counted spacers starting from the break point. But,
the character may be wider than that. Use the fact that the spacers
cells encode how many *more* there are after them; when we get to the
first one, we know exactly how wide the character is.
When appending to an existing composed character, "inherit" its forced
width, if set.
Also make sure to actually _use_ the forced width, if set, rather than
the calculated width.
This fixes an issue when appending zero-width codepoints to a
forced-width combining character.
If there's a single codepoint in the text portion of the OSC sequence,
and its calculated width matches the forced width, print it directly
to the grid instead of emitting a combining character.
When w=0, we split up the text string "as we normally would". Since we
don't support any other text-sizing parameters, this means simply
printing each codepoint to the grid.
This function "prints" any non-ascii character (i.e. any character
that ends up in the action_utf8_print() function in vt.c) to the
grid. This includes grapheme cluster processing etc.
action_utf8_print() now simply calls this function.
This allows us to re-use the same functionality from other
places (like the text-sizing protocol).
This brings initial support for the new kitty text-sizing
protocol. Note hat only the width-parameter ('w') is supported. That
is, no font scaling, and no multi-line cells.
For now, only explicit widths are supported. That is, w=0 does not yet
work.
There are a couple of changes to the renderer, to handle e.g.
OSC 66 ; w=6 ; foobar ST
There are two ways this can get rendered, depending on whether
grapheme shaping has been enabled. We either shape it, and get an
array of glyphs back that we render. Or, we rasterize each codepoint
ourselves, and render each resulting glyph.
The two cases ends up in two different renderer loops, that worked
somewhat different. In particular, the first case has probably never
been tested/used at all...
With this patch, both are changed, and now uses some heuristic to
differentiate between multi-cell text strings (like in the example
above), or single-cell combining characters. The difference is mainly
in which offset to use for the secondary glyphs.
In a multi-cell string, each glyph is mapped to its own cell, while in
the combining case, we try to map all glyphs to the same cell.
The logic that tries to ensure we don't break a line in the middle of
a multi-cell character was flawed when the number of cells were larger
than 2.
In particular, if the number of cells to copy were limited by the
number of cells left on the current (new) line, and were less than the
length of the multi-cell character, then we failed to insert the
correct number of spacers, and also ended up misplacing the multi-cell
character; instead of pushing it to the next line, it was inserted on
the current line, even though it doesn't fit.
Also change how trailing SPACER cells are rendered (cells that are
"fillers" at then end of a line, when a multi-column character was
pushed over to the next line): don't copy the previous cell's
attributes (which may be wrong anyway), use default attributes
instead.
When the client application emits combining characters, for example
multi-codepoint emojis, in insert-mode, we ended up pushing partial
graphemes to the right, for each codepoint, resulting in too many
cells (and with the wrong content) being inserted.
The fix is fairly simple; don't "insert" when appending characters to
an existing grapheme cluster.
This isn't something we can detect easily in print_insert() (it would
require us to do grapheme clustering again). Fortunately, we do have
the required information in action_utf8_print(). So, pass this
information as a boolean to term_print().
Closes#1947
When auto-matching URLs (or custom regular expressions), use the
first *subexpression* as URL, rather than the while regex match.
This allows us to write custom regular expressions with prefix/suffix
strings that should not be included in the presented match.
Users can now define their own regex patterns, and use them via key
bindings:
[regex:foo]
regex=foo(bar)?
launch=path-to-script-or-application {match}
[key-bindings]
regex-launch=[foo] Control+Shift+q
regex-copy=[foo] Control+Mod1+Shift+q
That is, add a section called 'regex:', followed by an
identifier. Define a regex and a launcher command line.
Add a key-binding, regex-launch and/or regex-copy (similar to
show-urls-launch and show-urls-copy), and connect them to the regex
with the "[regex-name]" syntax (similar to how the pipe-* bindings
work).
Currently, architecture using soft-floats doesn't support instructions
FE_INVALID, FE_DIVBYZERO, FE_OVERFLOW and FE_UNDERFLOW and so building
on those architectures results with a build error.
As the sqrt math function should set errno to EDOM if an error occurs,
fetestexcept shouldn't be mandatory.
This commit removes the float environment error handling.
Signed-off-by: Thomas Bonnefille <thomas.bonnefille@bootlin.com>
That is, try to match e.g. Control+shift+a, before trying to match
Control+A.
In most cases, order doesn't matter. There are however a couple of
symbols where the layout consumes the shift-modifier, and the
generated symbol is the same in both the shifted and unshifted
form. One such example is backspace.
Before this patch, key-bindings with shift-backspace would be ignored,
if there were another key-binding with backspace.
So, for example, if we had one key-binding with Control+Backspace, and
another with Control+Shift+Backspace, the latter would never trigger,
as we would always match the first one.
By checking for unshifted matches first, we ensure
Control+Shift+Backspace does match.
When matching the unshifted symbol, or the raw key code, ignore all
key bindings that don't have any modifiers.
This fixes an issue where it was impossible to enter (some of the)
numbers on the keypad, **if** there was a key-binding for
e.g. KP_Page_Up, or KP_Page_Down.
