| Commit message (Collapse) | Author | Age | Files | Lines |
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This patch adds recognition of these modifiers, with appropriate action
for d and l. u does nothing useful yet. This allows for the
interpolation of a regex into another one without losing the character
set semantics that it was compiled with, as for the first time, the
semantics is now specified in the stringification as one of these
modifiers.
To this end, it allocates an unused bit in the structures. The off-
sets change so as to not disturb other bits.
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The new op_reg_common.h did not have in it all the things that made
sense for it to have, including some comment changes that I should have
made when I created it.
I also realized the the new mechanism of using shifts allowed
RXf_PMf_STD_PMMOD_SHIFT to actually control things, rather than be a
#define that one had to remember to change if those things changed
independently.
Finally, I created a check so that adding bits without adding them to
RXf_PMf_COMPILETIME will force a compilation error. (This came from the
school of hard knocks)
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Moving the definitions of the duplicate variables makes it easier to
read. Unfortunately, the values can't be in terms of the previous ones
because defsubs_h.PL doesn't pick them up. So I've made them numeric
with a #if to make sure they don't drift off.
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This patch changes the variable that tells how many common bits there
are to instead be +1 that value, so bits won't get reused. A later
commit will renumber the bits in op.h and regexp.h, but for now things
are left as-is there, which means the base variables in those two files
must subtract one to compensate for the +1
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op.h and regexp.h share common elements in their data structures. They
have had to manually be kept in sync. This patch makes it easier by
putting those common parts into a common header #included by the two.
To do this, it seemed easiest to change the symbol definitions to use
left shifts to generate the flag bits. But this meant that regcomp.pl
and axt/B/defsubs_h.PL had to be taught to recognize those forms of
expressions, done in separate commits
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