From Martin Maechler <maechler@stat.math.ethz.ch>  Tue May 27 17:20:44 1997
From: Martin Maechler <maechler@stat.math.ethz.ch> (Martin Maechler)
Date: Tue, 27 May 97 18:20:44 +0200
Subject: R-alpha: patch for formatC(..char.vector..)
Message-ID: <9705271620.AA02863@>

Apply this patch in  
	src/library/base/funs/


--- 049orig/format~	Thu Mar  6 16:59:56 1997
+++ format	Tue May 27 18:11:27 1997
@@ -22,8 +22,11 @@
 			width <- -width
 		}
 		pad <- sapply(pmax(0, width - nc), bl.string)
-		## for R <= 0.16 (incompatibility to S):
-		if(is.list(pad)) pad <- ""
+		## for R <= 0.49 (incompatibility to S), pad may be list:
+		if(is.list(pad)) {
+			pad[sapply(pad,length) == 0] <- list("")
+			pad <- unlist(pad)
+		}
 		if (flag == "-") 
 			return(paste(x, pad, sep = ""))
 		else    return(paste(pad, x, sep = ""))

AFTER applying the patch,

	tst.ch <- c("a", "ABC", "XYZ", "dd")
	cbind(formatC(tst.ch, wid = 3))

works okay.
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R-alpha: patch for formatC(..char.vector..)
Martin Maechler