Graphics devices file[name] argument

Just got trapped by inconsistency of name of first argument
for file-based graphics devices. Both 'file' and 'filename'
are currently in use depending on the device. I ran on a
machine without PNG support which my code used postscript
as the backup device and choked here.

do.call(device, list(filename = pathname,

                       height = height,
                       width = width))

--- Method and first argument ---
postscript(file,
pdf(file,
pictex(file,
xfig(file,
bitmap(file,
jpeg(filename,
png(filename,
bmp(filename,

version

         _
platform sparc-sun-solaris2.9
arch     sparc
os       solaris2.9
system   sparc, solaris2.9
status
major    1
minor    9.0
year     2004
month    04
day      12
language R

Also verified against R 2.0.1 on Windows

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SIGSIG -- signature too long (core dumped)