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fltfmt: %.0g should print with one significant figure

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

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

@@ -187,7 +187,7 @@

 	 * c3 digits of trailing '0'

 	 * c4 digits after '.'

 	 */

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

+	if(chr == 'g' && prec > 0) /* Significant figures. */

 		prec--;

 	c1 = 0;

 	c2 = prec + 1;

-- 

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