Red Hat Bugzilla – Bug 595034
gnome-terminal frequently displays the cursor incorrectly in white space strings in JOVE editor.
Last modified: 2010-12-03 09:27:21 EST
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:184.108.40.206) Gecko/20100330 Fedora/3.5.9-1.fc12 Firefox/3.5.9
Cursor (block and underline) becomes stretched to 7 or 8 columns wide, obscuring the character after a TAB; can become fragmented (part block, part 'wide' block) when within a whitespace field. But also can 'forget' to display the next character after a whitespace field, and moving 'off' that part of the text doesn't always correct the problem. Using JOVE's redraw-display doesn't always work. JOVE is an emacs-like editor I maintain; it uses termcap.
Neither KDE konsole nor xterm exhibit this behavior using JOVE.
Steps to Reproduce:
1. Un-zip and un-tar jove_4.22.tar.gz in a convenient directory; make.
2. Open testfile.c (supplied) in JOVE (make'd as jjove).
3. Move the cursor around between the '*'s and the text.
The cursor 'goes wide' sometimes, sometimes it gets it right and just shows the block cursor. Sometimes the block will become 'an orphan' and the (real) cursor will be somewhere else. Sometimes Ctl-L will clean up the display.
The block cursor should always be exactly one character wide and be positioned at the place on the screen where JOVE puts it.
I checked the source of JOVE _very_ carefully before stumbling on the fact that neither konsole nor xterm behave this way.
I also stumbled on the fact that this cursor bug is exhibited in Fedora 9, 10, and 11, as well. (I upgraded from Fedora 8 to Fedora 12 recently).
No Fedora distribution before 9 has the problem.
I tried switching to konsole, but it doesn't support Keypad-5 key and the xterm window is awkward to use. I am surprised at how fond I've become of gnome-terminal.
Created attachment 415901 [details]
Latest JOVE editor release, includes JoveScreenshot of testfile.c cursor bug
The JOVE editor can be gunzipped and untarred anywhere and does not need to be 'make install'd. Just make will create executable jjove.
JoveScreenshot.png has been put into the tar.gz as well as testfile.c.
The cursor bug can be experienced with: > jjove testfile.c
Fedora Bugzappers volunteer triage team
I just discovered that the "I-beam" cursor does not exhibit the bad behavior in gnome-terminal. Maybe this will help.
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