This functionality is: case insensitivity comparisons (/I);
CMDEXTVERSION and DEFINED unary operators; EQU, NEQ, LSS, LEQ, GTR, GEQ
generic string comparators.
Use kernel32!lstrcmp(i) instead of CRT!_tcs(i)cmp, so as to use the correct
current thread locale information when comparing user-specific strings.
As a result, the following comparison: 'b LSS B' will return TRUE,
instead of FALSE as it would be by using the CRT functions (and by
naively considering the lexicographical order in ANSI).
This behaviour has been introduced in Windows 2000 onwards.
- To this purpose use the ParseErrorEx() that correctly sets the
bParseError flag, and return the partially-parsed command so that
it gets echoed as well for diagnostics purposes (Windows-compatible).
- Any other parameters specified after (or before) the '/?' switch for
the FOR and IF commands, are considered fatal syntax errors as well,
thus we employ the ParseErrorEx() as well.
CORE-13713 CORE-13736
- In case execution of all batch contexts is stopped (by selecting "All"
at the Ctrl-C/Ctrl-Break prompt), notify as well the CheckCtrlBreak()
signal handler once there are no more batch contexts (this in effect
resets the internal 'bLeaveAll' static flag in CheckCtrlBreak).
This is an adaptation of the fix present in FreeCOM 1.5, first
described in https://gcfl.net/FreeDOS/command.com/bugs074g.html .
- Introduce a ParseErrorEx() helper that sets the 'bParseError' flag and
displays a customized syntax-error message, only for the first syntax
error encountered. Implement ParseError() around the *Ex function.
- In batch mode, echo the original pre-parsed batch file line if a parse
error has been encountered.
- When running a compound command - including IF, FOR, command blocks -,
and that control flow is modified by any CALL/GOTO/EXIT command,
detect this while running the compound command so as to stop it and go
back to the main batch execution loop, that will then set up the actual
new command to run.
- In GOTO, do not process any more parts of a compound command only when
we have found a valid label.
