Yes, it’s guaranteed. It works because arguments to macros are themselves macro-expanded, except where the macro argument name appears in the macro body with the stringifier # or the token-paster ##. 6.10.3.1/1: … After the arguments for the invocation of a function-like macro have been identified, argument substitution takes place. A parameter in the replacement … Read more
The relevant steps of macro expansion are (per C 2011 [n1570] 6.10.3.1 and C++ 1998 16.3.1): Process tokens that are preceded by # or ##. Apply macro replacement to each argument. Replace each parameter with the corresponding result of the above macro replacement. Rescan for more macros. Thus, with xstr(foo), we have: The replacement text, … Read more
I assume you’re asking for the full HTML string. If that’s the case, something like this will do the trick: $(‘<div>’).append($(‘#item-of-interest’).clone()).html(); This is explained in more depth here, but essentially you make a new node to wrap the item of interest, do the manipulations, remove it, and grab the HTML. If you’re just after a … Read more
One thing to be aware of when you’re using the token-paste (‘##‘) or stringizing (‘#‘) preprocessing operators is that you have to use an extra level of indirection for them to work properly in all cases. If you don’t do this and the items passed to the token-pasting operator are macros themselves, you’ll get results … Read more