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fltfmt: %.ng is supposed to print a number with n significant figures, but it prints it with n+1. This fixes that behaviour.

--- a/sys/src/libc/fmt/fltfmt.c

+++ b/sys/src/libc/fmt/fltfmt.c

@@ -187,6 +187,8 @@

 	 * c3 digits of trailing '0'

 	 * c4 digits after '.'

 	 */

+	if(chr == 'g') /* Significant figures. */

+		prec--;

 	c1 = 0;

 	c2 = prec + 1;

 	c3 = 0;