As part of my ongoing campaign to avoid really understanding the nedit code, I
ask the following questions. Obviously, I could test these items and find
out for myself, but if somebody can answer them, it will make it that much
easier for me.
1. Does a range of zero length "disappear"? (I'm hoping not.)
2. Can a given piece of text be part of more than one range as long as each of
those ranges is in a different rangeset?
My guess as to the answer to the 2nd question would have been yes, but then I
found this data structure for styles in textDisp.c:
/* If you use both 32-Bit Style mask layout:
Bits +----------------+----------------+----------------+----------------+
hex |1F1E1D1C1B1A1918|1716151413121110| F E D C B A 9 8| 7 6 5 4 3 2 1 0|
dec |3130292827262524|2322212019181716|151413121110 9 8| 7 6 5 4 3 2 1 0|
+----------------+----------------+----------------+----------------+
Type | r r| r r r r b b b b| b b b b H 1 2 F| s s s s s s s s|
+----------------+----------------+----------------+----------------+
where: s - style lookup value (8 bits)
F - fill (1 bit)
2 - secondary selection (1 bit)
1 - primary selection (1 bit)
H - highlight (1 bit)
b - backlighting index (8 bits)
r - rangeset index (6 bits)
This leaves 6 "unused" bits */
Which, without understanding at all its use in nedit, could almost lead me to
guess that a given piece of text can be part of only one rangeset. (I'm
hoping I'm wrong.)
Randy Kramer
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