.DEVTAG causes a problem with the ms macros

[Y T]

GROFF VERSION: 1.19.3 (version from CVS 10/22/2007)

OS: Linux

COMPILER: gcc

INPUT FILES:

.de Rp
.if \\$1>0 \{\
\\$2
.nr Rp \\$1-1
.Rp \\n(Rp "\\$2" \}
..
.LP
.Rp 20 "single column test"
.br
.2C
.Rp 200 "double column test"

COMMAND LINE:   groff -ms file-above

DESCRIPTION OF INCORRECT BEHAVIOUR:

The first column starts lower on the page than the second.

SUGGESTED FIX [optional]:

The culprit seems to be the line
.DEVTAG ".mc address@hidden address@hidden \\n[pg*gutw]"
in the definition of the @MC macro (file s.tmac).
If this line is removed, the problem is fixed.

The problem does not exist in version 1.18.1.1
That version has the line
.HTML-TAG ".mc address@hidden address@hidden \\n[pg*gutw]"
instead of the .DEVTAG line above
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