conf file descriptor is closed once again during cleanup at the end of
config_load() if descriptor >= 0. avoid double closing by assigning
negative value to fd after first close.
by the time second close happens some other descriptor might be opened
reusing previous number ie it might happen during foot server startup
when syslog message is logged between one close and the other. in this
particular situation, as of this writing, it considers fd=3 for which
following events apply:
1. conf file is opened and fclosed()
2. warning is logged with syslog which leads to opening socket to
/dev/log which is kept open by glibc (gets fd=3)
3. second close during config_load() closes /dev/log socket descriptor
4. epoll_create() in fdm.c reuses fd=3 again
5. another message is being logged with syslog. glibc notices sendto()
failure on saved /dev/log descriptor hence it closes it and opens
new one
Due to epoll descriptor closure foot starts a chain of errors that
lead to startup failure.
Fixes#1531
Reject color values that aren't in either RGB, or ARGB format. That
is, color values that aren't hexadecimal numbers with either 6 or 8
digits.
Also, if a color value is allowed to have an alpha component, and the
user left it out, default to 0xff (opaque) rather than 0x00 (fully
transparent).
Closes#1526
An opaque sixel that isn't a multiple of the cell size will have some
cells partially visible (either the entire last row, the entire last
column, or both).
These must be rendered before blitting the sixel.
f5f2f5a954 introduced a regression,
where all such cells were rendered as if the cursor was there, giving
them the wrong appearance.
Closes#1520
Pass a damage region to render_row()/render_cell() when rendering
partially visible cells underneath a sixel.
This ensures the affected regions are later reported as 'damaged' to
the Wayland compositor.
Closes#1515
When erasing a sixel, the cells underneath it must be marked as
'dirty', in order to be re-rendered.
This was not being done correctly; the for loop loops *from* the start
col, meaning the *end* col is *not* sixel->pos.col, as that's
the *number* of columns, not the *end* column.
MFD_NOEXEC_SEAL was introduced in linux 6.3. Kernels before that
will *reject* memfd_create() calls that set it.
This caused foot to exit (i.e. not start at all), when compiled on
linux >= 6.3, but run on linux < 6.3.
We _do_ want to use MFD_NOEXEC_SEAL, since a) our memory mapped really
shouldn't be executable, and b) to silence a warning on linux >= 6.3.
To handle all cases, first try *with* MFD_NOEXEC_SEAL. If that fails
with EINVAL, retry *without* it.
Closes#1514
When using the font's own line-height, simply set the baseline
'descent' pixels above the bottom of the cell.
This fixes an issue where some fonts appeared "glued" to the top of
the cell, and sometimes getting partially clipped.
This reverts commit fd813d0e6c.
The intent of the reverted commit was to align font height calculation
with cell height calculation. However, it turns out this breaks some
fonts. Typically those with large:ish differences in their 'height'
attribute, and their ascent+descent value.
Closes#1511
Before this patch. Wayland surface damage tracking was done on a
per-row basis. That is, even if just one cell was updated, the entire
row was "damaged".
Now, damage is per cell. This hopefully results in lower latencies in
many use cases, and especially on high DPI monitors.
The has_wrapped_around_{right,left} functions were mixed up, causing
false positives and false negatives, resulting in bad search matches.
Also make all search_extend_find* functions return a boolean; false
means no change in the selection. In this case, we can skip trying to
extend the selection, and updating the UI.
