Commits on Jun 22, 2023

1. skip trying to substitute macros into lines that do not contain them …

   Currently, we try to substitute all macros into all lines by calling `subn` on the compiled regex, which results in an unmodified line if the line did not contain the macro at all. This call to `subn` is still quite expensive (runtime-wise).
   
   To spare the cost, we now first check whether the line actually contains the macro text and skip the substitution check otherwise.
   Please note that a line containing the macro text does not necessarily mean that a substitution will take place, since the simple containment is less strict than the regex (which checks that the macro is an actual token separated from the sounding context, as in `FOO` being in `FOO_BAR` but it should not be substituted).

   

   albertziegenhagel committed Jun 22, 2023
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