Also, compose the coloring attributes during initialization
instead of every time when painting something.
Signed-off-by: Rishabh Dave <rishabhddave@gmail.com>
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>

This fixes https://savannah.gnu.org/bugs/?48389.

Color-pair numbers and attributes can be OR'd together -- do so,
to save an attron() call whenever the hilite is on.

Precalculation of the multiline color data can be cut short when the
user is impatient and starts typing.  But this would drop the first
byte of whatever was typed -- not nice when it was just plain text,
but surprising and worse when the first keystroke was a command.

This fixes https://savannah.gnu.org/bugs/?48388.

When for a multiline syntax-coloring rule the starting regex matches at
the exact same spot as the ending regex, do a second round of resets, so
that reevaluation starts further back and gets a few more things right.

This mildly fixes https://savannah.gnu.org/bugs/?47420.

Some platforms don't like that.

If during startup there are multiple error messages, currently only the
last one remains and can be read.  To improve on that, introduce a short
pause between error messages -- even if it's not enough to read them all,
at least the user will be aware that there are multiple ones.

This also causes a few error messages to beep that currently don't beep,
such as when a file is unwritable.

For a little contrast with the function edit_refresh() -- it's
annoying that when you search for the latter you get to see all
the settings of the flag too.

using it when it's available (which it is on OS X systems).
This completes the fix for Savannah bug #47325.
Patch by Thomas Rosenau.


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on equal footing.


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comes first, so that a search can stop at the first match instead of always
having to run through the entire list.


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Stopping instead to call malloc() pointlessly.


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instead of the first syntax that matches a certain magic string
(forgotten in the previous commit).


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last-defined one.  This addresses Savannah bug #47303.


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name given on the command line, not from the name of the target file.
This fixes Savannah bug #47307.


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to file extensions, but also to header lines and magic strings.


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foregoing a small, complicating optimization.


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This fixes Savannah bug #26977 -- a hang on start="^" end="$".


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And making the checking for an impatient user into a separate routine.


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