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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<chars.h>
+include	"lroff.h"
+
+.help lgetarg
+.nf _________________________________________________________________________
+LGETARG -- Get an integer argument to a directive.  If no argument is found,
+return the default value.  We are called with IP pointing to the start of
+the argument field to be searched.  Leave IP pointing to the next argument
+field.
+.endhelp ____________________________________________________________________
+
+int procedure lgetarg (input_line, ip, default_value)
+
+char	input_line[ARB]
+int	ip, default_value
+int	argument
+int	ctoi()
+
+begin
+	if (ctoi (input_line, ip, argument) == 0)
+	    argument = default_value
+
+	# Eat comma argument delimiter, if multiple arguments.  Also eat
+	# trailing whitespace, in case a string argument follows.
+	while (input_line[ip] == BLANK)
+	    ip = ip + 1
+	if (input_line[ip] == ',')
+	    ip = ip + 1
+	while (input_line[ip] == BLANK)
+	    ip = ip + 1
+
+	return (argument)
+end