set old_math_parser

Removed setting

The former setting used this syntax:

/set old_math_parser [on|off|toggle]

Turning it on selected the old math parser. EPIC6 removes that parser and does not register old_math_parser as a setting. There is no supported value, default, or compatibility mode attached to this name.

Without script-provided handling of unknown settings, /set old_math_parser on reports No such variable "OLD_MATH_PARSER". Remove obsolete assignments from startup scripts. A script accepting the name would define its own behavior rather than restore the removed expression evaluator.

Current expressions

EPIC6 evaluates expressions through the remaining parser in source/expr2.c. Scripts that depended on the old parser's operator behavior must be adapted to the current evaluator; this setting cannot restore those semantics. The former xdebug old_math_parser selector is also retired.

Set floating_point_math controls fractional result formatting and is not a replacement parser selector. Changing it does not enable the removed parser.

Source references

• KNOWNBUGS: explicitly records retirement of the old math parser and its xdebug selector.
• source/vars.c: current registration omits this setting and handles unknown-variable errors.
• source/expr2.c: remaining expression evaluator.
• source/debug.c: current debug option table has no old-parser selector.