Since .endc was defined both as the context end delimiter and a context
keyword, it was not recognized as the former and the control script
context, once started, would never be finished. This issue can be
noticed, for example, in wrong syntax highlighting of the .end command
if it was preceded by a control script.
Fix the issue by making the control script context exclusive and
highlighting the .control and .endc keywords in the default context
instead.
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Add basic support for highlighting Ngspice/SPICE (http://ngspice.sourceforge.net/)
circuit description files syntax. Two main contexts are defined:
- the default context, where the circuit is described,
- the control script context (between .control and .endc).
The default context highlights dot commands, circuit element instance
names and model types. The control script context highlights supported
functions/commands and known variables. Both contexts highlight comments
and line continuation marks.
Other than two FIXMEs, it is a known issue the first line of the file is
part of the default context, while in most cases it would contain the
file title.
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
