[Bug gas/3129] New: Document use of \() in .macro

[markus+sw at gyger dot org]

The new macro parameter expansion rules break macros like

.macro assign register bit value
\register.\bit = \value
.endm

The manual suggests to use .altmacro instead.
However, the undocumented \() would also work
in regular mode and be backwards compatible.
E.g. replace above

\register\().\bit = \value
or
\register\(.)\bit = \value

Please document it (and re-word the entry about
& and .altmacro to make it a bit more readable).

-- 
           Summary: Document use of \() in .macro
           Product: binutils
           Version: 2.17
            Status: NEW
          Severity: minor
          Priority: P3
         Component: gas
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: markus+sw at gyger dot org
                CC: bug-binutils at gnu dot org
 GCC build triplet: i386-pc-solaris2.10
  GCC host triplet: i386-pc-solaris2.10
GCC target triplet: i386-pc-solaris2.10


http://sourceware.org/bugzilla/show_bug.cgi?id=3129

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