+ else if (combining != uniend &&
+ prefixIs(subcmd, combcmd + '{')) {
+ // We know that subcmd starts with combcmd and
+ // contains an argument in braces.
+ docstring const arg = subcmd.substr(
+ combcmd.length() + 1,
+ subcmd.length() - combcmd.length() - 2);
+ // If arg is a single character we can construct a
+ // combining sequence.
+ char_type a;
+ bool argcomb = false;
+ if (arg.size() == 1 && isAlnumASCII(arg[0]))
+ a = arg[0];
+ else {
+ // Use the version of fromLaTeXCommand() that
+ // parses only one command, since we cannot
+ // use more than one character.
+ bool dummy = false;
+ set<string> r;
+ a = fromLaTeXCommand(arg, cmdtype, argcomb,
+ dummy, &r);
+ if (a && req && !argcomb)
+ req->insert(r.begin(), r.end());
+ }
+ if (a && !argcomb) {
+ // In unicode the combining character comes
+ // after its base
+ symbols += a;
+ symbols += combining->first;
+ i = j + 1;
+ unicmd_size = 2;
+ }
+ }
+ if (j + 1 == cmdend && !unicmd_size) {