Doc tweak for x-use-underline-position-properties

* src/xterm.c (syms_of_xterm) <x-use-underline-position-properties>:
Remove ancient information from doc.
* etc/PROBLEMS: Related edit.

2 files changed, 5 insertions, 8 deletions

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index dedbf80b353..07971766192 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -783,10 +783,8 @@ frame's parameter list, like this:
 ** Underlines appear at the wrong position.
 
 This is caused by fonts having a wrong UNDERLINE_POSITION property.
-Examples are the 7x13 font on XFree86 prior to version 4.1, or the jmk
-neep font from the Debian xfonts-jmk package prior to version 3.0.17.
-To circumvent this problem, set x-use-underline-position-properties
-to nil in your '.emacs'.
+To avoid this problem (seen in some very old X releases and font packages),
+set x-use-underline-position-properties to nil.
 
 To see what is the value of UNDERLINE_POSITION defined by the font,
 type 'xlsfonts -lll FONT' and look at the font's UNDERLINE_POSITION property.
diff --git a/src/xterm.c b/src/xterm.c
index deae65d1d8a..2371058cd45 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -13242,10 +13242,9 @@ syms_of_xterm (void)
                x_use_underline_position_properties,
      doc: /* Non-nil means make use of UNDERLINE_POSITION font properties.
 A value of nil means ignore them.  If you encounter fonts with bogus
-UNDERLINE_POSITION font properties, for example 7x13 on XFree prior
-to 4.1, set this to nil.  You can also use `underline-minimum-offset'
-to override the font's UNDERLINE_POSITION for small font display
-sizes.  */);
+UNDERLINE_POSITION font properties, set this to nil.  You can also use
+`underline-minimum-offset' to override the font's UNDERLINE_POSITION for
+small font display sizes.  */);
   x_use_underline_position_properties = true;
 
   DEFVAR_BOOL ("x-underline-at-descent-line",