minix/commands/elvis/Knownbug.txt
2005-04-21 14:53:53 +00:00

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The following options are missing:
[no]optimize - affects screen redrawing method
[no]redraw - simulate character insertion by redrawing line
[no]slowopen - don't use character insertion
tags="tags" - list of tags, used as TAGPATH
I'd like to improve the versatility of the options whose value is a command:
cc, make, kp, and ep. I'd like to add some notation that allows you to say
where to insert the current filename or current word.
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Currently, elvis is configured to look for | only in .exrc files. It doesn't
look for | in any interactively entered command lines, yet.
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The 'p', '#', and 'l' flags aren't supported. Also, ex commands don't accept
counts; e.g., ":c5" can't be used to change five lines.
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The following have been reported, but have not been verified. If you have
experienced any of the following, and haven't reported it yet, then please
report it now! I need more information about these bugs.
[Bugs that are not in this list should also be reported, of course.]
- Under VMS on an 80-column screen, after scolling sideways to approximately
column 110, a ^L will not redraw the part of the line after the cursor.
- On an Atari ST running under TOS: some ASCII keys seem to send '#' plus
another key. (This is normal for non-ASCII keys like <F1> or <Help>, but
ASCII keys should always send a single ASCII character.)
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BIG JOBS:
Desirable extension: merge input mode and visual command mode.
Display long lines by wrapping, like the real vi (if ":set sidescroll=0")
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- In the ":w >>filename" command, elvis doesn't allow any whitespace between
the ">>" and "filename".
- Elvis doesn't allow "backslash newline" inside a single EX command.
- VMS intercepts the control-T character, which is normally used to increase
indentation. The <Tab> key works, but it doesn't do quite the same thing.
(":map! ^I ^T" helps.)
- Under VMS, file I/O is very slow. Looking over the vmsio.c file, I get the
impression that it is rather over-done for elvis. Its speed could
probably be inproved.
- The errlist feature doesn't seem to work with the Borland compilers. Perhaps
they write to stderr instead of stdout? This will probably be easy to solve
once I modify the "cc" and "make" options, as described earlier.
- The command ":0" should move the cursor to line 1. Currently, it doesn't
move the cursor at all.
- File preservation is still flakey. On DOS/TOS/VMS systems, it is also more
complex that it should be.
- The act of appending to a cut buffer (as in "Ayy) sets file modification
flag. It shouldn't!
- The .exrc file is limited to BLKSIZE bytes -- 2048 on most systems, but
1024 on Minicx-PC, Coherent, and MS-DOS.
- I *still* haven't quite perfected the screen update code. If you suspect
that the screen doesn't accurately reflect the contents of the edit buffer,
then you should try doing a control-L.
I'll be overhauling the screen update code soon to make it wrap long lines
like the real vi. I expect to fix this bug then.