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7.3 Miscellaneous variable facilities ¶

Function: mbfl_variable_alloc _RV ¶

Generate a unique variable name and store it in the variable _RV.

To avoid allocating the same name twice: the function examines the new name testing if its value as variable is empty; if it is empty, it considers it “new”. So, whenever we allocate a name: we should locally initialise the variable to some non–empty value.

local NAME

mbfl_variable_alloc NAME
$NAME   ⇒ mbfl_u_variable_2323

Preprocessor Macro: mbfl_variable_unset (VAR) ¶

Preprocessor Macro: mbfl_unset_variable (VAR) ¶

These macros are synonyms. Expand into a command that unsets the variable VAR:

unset -v VAR