Formatted text currently gets corrupted by DtTerm when copied into its
history buffer.
As soon as a line of text is copied into the history, the text of each
segment of formatted text is altered so that it contains the text from
the start of the line. For example:
echo -e '\e[1mbold\e[m \e[4munderlined\e[m'
When the text has scrolled off the screen, scrolling back to it reveals:
boldbbold under
This is fixed by adding the calls to _DtTermPrimBufferGetCharacterPointer
that were missing which would update the buffer pointer when inserting
text into the history buffer.
This patch fixes many warnings from the beginning of the build up to
and including the depend stage. Nearly all warnings should be gone
even with -Wall.
The cause of the bug was that X*DrawImageString draws background
according to the extents of the given string, not to extents of the font set,
which determine terminal line height.
Now, when such a situation is detected, the background is cleared before
drawing the characters.
There was a check in linux.cf for the Linux libc version that didn't
work, since these were never set anywhere. Presumably current Xorg
imake sets these, but since we aren't using that... (yet)
As a result, the build assumed that thread-safe API's were not
supported. Setting the default libc major version to '6' allows the
proper build to take place. libc5 was never threadsafe and no one has
probably used it in over 10 years.
As a result, some earlier porting fixes that referenced '__fds_bits'
on linux systems had to be reverted as these are not valid in an MT
environment. They are also not neccessary when building in such an
environment, as the normal 'fds_bits' works fine.
This patch defintely needs testing on many linux systems.
