wgnuplot's enhanced text mode fails

[Shigeharu T. <sh...@ie...>]

shige 03/18 2006
----------------

On gnuplot QandA BBS (Japanese), the following problem was
reported:

 wgnuplot (gnuplot-4.1) may fail by

  set term win enh
  plot sin(x)

To fix the problem, Akira Kakuto (ka...@fu...) 
submited the following patch:

----- From here -----
--- src/graphics.c.orig	Sun Mar 12 16:57:38 2006
+++ src/graphics.c	Sat Mar 18 16:07:05 2006
@@ -345,7 +345,7 @@
     /* This should go *inside* label_width(), but it messes up the key title */
     /* Imperfect check for subscripts */
     if (term->flags & TERM_ENHANCED_TEXT)
-	if (strchr(axis_array[FIRST_X_AXIS].label.text,'_'))
+	if (axis_array[FIRST_X_AXIS].label.text && strchr(axis_array[FIRST_X_AXIS].label.text,'_'))
 	    xlablin++;
 #endif
     if (axis_array[SECOND_X_AXIS].label.text)
----- To here ----- 

+========================================================+
 Shigeharu TAKENO     NIigata Institute of Technology
                       kashiwazaki,Niigata 945-1195 JAPAN
 sh...@ie...   TEL(&FAX): +81-257-22-8161
+========================================================+