Hello,
Been catching up on threads, and it seems that one thing did not come up
during the really long discussions: conditional segment.
let Usage = """
Tool X
-i specify input file
-o specify output file
#if SOME_OS
-c magic conversion
#endif
"""
Since the #if/#endif, unlike C (which is way to permissive), cannot be used
everywhere, such thing is likely current impossible. The limitation of
#if/#endif is so "strict" that, based on the single double quote string
behaviour, to achieve the desired result one have to duplicate the immutable or
convert it to a mutable (even though the content is immutable)
var Usage = """
Tool X
-i specify input file
-o specify output file
''""
#if SOME_OS
Usage = Usage + """
-c magic conversion
"""
#endif
Debating over the need of supporting conditional section is likely too late in
the play, but rating this point may allow provisioning to be done to allow this
in the future without breaking code.
The currently accepted version of SE-0168, seems to allow the closing triple
double-quote to be in the first column, which would prevent the use of
#if/#endif, but for all other cases an under-indented #if/#endif line is
supposed to be considered as malformed and rejected (warning raised). So, in
theory it could be interpreted properly as #if/#endif
If interpreting the under-indented line for #if/#endif seems acceptable, the
interpretation could be also extended to comments.
Regards,
Dany
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