Re: [4/11] Native MSVC support (file-magic-glob)

[Ralf Menzel]

Hello,

Paolo Bonzini <address@hidden> writes:
>>> [lL][iI][bB][nN][aA][mM][eE]
>>>
>>> by using this sed expr
>>>
>>> s/[aA]/[aA]/g;s/[bB]/[bB]/g;<22 more>;s/[yY]/[yY]/g;s/[zZ]/[zZ]/g;
>>>
>>> Isn't there a better way? (I can't think of one offhand, given how
>>> this is used to generate a list of "potential_libs", but
>>> still...this can't be very efficient.)
>
> I would do something like this:
>
> s/[A-Za-z]/*|&|ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ*/g
> s/\*|\(.\)|[A-Za-z]*\1[A-Za-z]\{25\}\([A-Za-z]\)[A-Za-z]*\*/[\1\2]/g

Ah, that's a nice solution. I was considering the following:

y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/
s/\([A-Z]\)/[\1\
\1\
]/g
h
s/[^\n]*\n\(.\)\n[^\n]*/\1/g
y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/
G
s/\n//
:loop
s/^\(.\)\([^\n]*\)\n.\n/\2\1/
/\n/bloop

which doesn't look too efficient. (Still, its use of pattern space is
it little less extravagant.)

Bye,
Ralf Menzel