add missing "if"

freddrake · freddrake · commit dbe7980d6a7f · 2003-11-10T14:43:16.000Z
diff --git a/Doc/lib/libfileinput.tex b/Doc/lib/libfileinput.tex
@@ -77,7 +77,7 @@ \section{\module{fileinput} ---
 \end{funcdesc}
 
 \begin{funcdesc}{isfirstline}{}
-  Returns true the line just read is the first line of its file,
+  Returns true if the line just read is the first line of its file,
   otherwise returns false.
 \end{funcdesc}
 
