comma in a c statement, ie for(i=0,i2=0;i<10;i++,i2)

[Tim Rentsch]

Ah! Thank you. This not only makes things very clear (in particular my
fussing over footnote 27 is irrelevant since it clearly applies when a
for loop exits) it explains what looked to me like inconsistent wording
between 6.2.1 (Scope of identifiers) p4 and 5.8.5.3 (The for statement)
p1.

I think it could be better placed, but at least it's there.

Right. Note that there is similar wording for selection
statements ('if()' and 'switch()').