-d21.2
Trace $& macros Debug command-line switch
The -d21.2
debugging switch tells sendmail
to show the current value of any deferred-expansion
macro (one that was declared with the $& prefix). Each
such macro that is encountered in processing a rule
prints as:
rewrite: LHS $&char => "value" rewrite: RHS $&char => "value" rewrite: LHS $&name => "value" ← V8.7 and above rewrite: RHS $&name => "value" ← V8.7 and above
The char is the single-character
name of the macro, the name is
either a multicharacter macro name or a
single-character name, and the
value is its current value.
If that particular macro lacks a value, it will
print as (NULL). The LHS refers to the lefthand side of the
rule, and the RHS
corresponds to the righthand side.
Deferred-expansion macros are described in Use Value As Is with $& on page
793.
Get sendmail, 4th Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
