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[Emacs-diffs] Changes to emacs/etc/PROBLEMS

From: Eli Zaretskii
Subject: [Emacs-diffs] Changes to emacs/etc/PROBLEMS
Date: Sat, 17 Nov 2001 12:25:41 -0500

Index: emacs/etc/PROBLEMS
diff -u emacs/etc/PROBLEMS:1.84 emacs/etc/PROBLEMS:1.85
--- emacs/etc/PROBLEMS:1.84     Sat Nov 17 02:20:23 2001
+++ emacs/etc/PROBLEMS  Sat Nov 17 12:25:41 2001
@@ -250,6 +250,29 @@
 global-font-lock-mode RET" or by customizing the variable
+* Emacs on a tty switches the cursor to large blinking block.
+This was reported to happen on some GNU/Linux systems which use
+ncurses version 5.0, but could be relevant for other versions as well.
+These versions of ncurses come with a `linux' terminfo entry, where
+the "cvvis" capability (termcap "vs") is defined as "\E[?25h\E[?8c"
+(show cursor, change size).  This escape sequence switches on a
+blinking hardware text-mode cursor whose size is a full character
+cell.  This blinking cannot be stopped, since a hardware cursor
+always blinks.
+A work-around is to redefine the "cvvis" capability so that it
+enables a *software* cursor.  The software cursor works by inverting
+the colors of the character at point, so what you see is a block
+cursor that doesn't blink.  For this to work, you need to redefine
+the "cnorm" capability as well, so that it operates on the software
+cursor instead of the hardware cursor.
+To this end, run "infocmp linux > linux-term", edit the file
+`linux-term' to make both the "cnorm" and "cvvis" capabilities send
+the sequence "\E[?25h\E[?17;0;64c", and then run "tic linux-term" to
+produce a modified terminfo entry.
 * Problems in Emacs built with LessTif.
 The problems seem to depend on the version of LessTif and the Motif

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