17 Apr
2012
17 Apr
'12
3:36 p.m.
Darrell,
Here is a simple one for you. The 'tips' in konsole tips to set the prompt
incorrectly uses a 'close' instead of 'open' bracket following the
'e' and
incorrectly uses a ';' and omits the 'm' to terminate resetting the
prompt
background and bold state. The tips contain 3 similar references in the form:
export PS1=$PS1"\[\e]0;\H:\w\a\]"
This is wrong. It should be:
export PS1=$PS1"\[\e[0m\H:\w\a\]"
Note the second bracket is backwards... should be
PS1=$PS1"\[\e[
^
Further, to properly reset the background and bold state of the prompt (and to
terminate non-printing characters) so that BASH can properly calculate prompt
length and spacing, you must use '\[\e0m' not \[\e]0; (note the semicolon) The
semicolon is used to separate the foreground/background colors not terminate the
reset... You can see the differences when you look at the bad/good prompts
stacked above/below each other:
export PS1=$PS1"\[\e]0;\H:\w\a\]"
export PS1=$PS1"\[\e[0m\H:\w\a\]"
I've included a patch that fixes the existing 3 prompt tips and I have
included 2 additional prompt tips as well.
Review, signoff and push. If you don't want the additional 2 tips, just trim
them from the patch. (I always like additional tips :)
(no I won't explain how I found this :)
--
David C. Rankin, J.D.,P.E.
17 Apr
17 Apr
3:46 p.m.
New subject: [trinity-devel] konsole "Prompt Tip" incorrect (with patch - review and push)
I've included a patch that fixes the existing 3
prompt tips and I have included 2 additional prompt tips as well.
Review, signoff and push. If you don't want the
additional 2 tips, just trim them from the patch. (I always like additional tips :)
Looks sane, even for me! I'll push.
(no I won't explain how I found this :)
Well, I was going to ask how in jumping blue blazes you stumbled across those typos....
Yet I'm curious about one of the tips. Does $PS1 actually place the directory in the
konsole window title? I thought $PROMPT_COMMAND had to be used to accomplish that (which
is what I have used for many years). Is that tip technically correct?
Darrell
4:10 p.m.
New subject: [trinity-devel] konsole "Prompt Tip" incorrect (with patch - review and push)
On 04/17/2012 05:46 PM, Darrell Anderson wrote:
Well, I was going to ask how in jumping blue blazes
you stumbled across those typos....
Yet I'm curious about one of the tips. Does $PS1 actually place the directory in the
konsole window title? I thought $PROMPT_COMMAND had to be used to accomplish that (which
is what I have used for many years). Is that tip technically correct?
Darrell
Your environment has several prompts (up to 6 I think)
PS1 - your main prompt
PS2 - secondary prompt
... and so on. PS1 is simply the environment variable name.
I've always enjoyed having a useful prompt:
http://www.ibm.com/developerworks/linux/library/l-tip-prompt/
The one I like for keeping me on time is:
PS1='\[\e[0;37m\]\A\[\e[1;34m\] \[\e[1;34m\]\h:\w> \[\e[0m\]'
I use a variation for 'root'
PS1="\[\e[1;34m\][\[\e[1;31m\]\A \[\e[1;34m\]\h\[\e[0;31m\]:\w\[\e[1;34m\]] #
\[\e[0m\]"
When you use a prompt that provides hostname/path info, eg:
nirvana:/srv/http/dl/dt/tde>
Then to ftp, sftp, rsync, etc... files between hosts, I just select the prompt
and I've already got the source or destination. I.e.:
rsync -uai nirvana:/srv/http/dl/dt/tde .
--
David C. Rankin, J.D.,P.E.
4:42 p.m.
New subject: [trinity-devel] konsole "Prompt Tip" incorrect (with patch - review and push)
Your environment has several prompts (up to 6 I
think)
Yup, yup, yup. I know that. :)
I was asking whether the tip itself is technically correct.
I recall long ago in a galaxy far away, that to get the directory name to appear in the
konsole title bar required setting the $PROMPT_COMMAND in the environment. Of course, like
many users, one I got things configured the way I wanted I haven't changed a doggone
thing in many years. So now my gray matter is fuzzy about this.
I don't know. I know $PROMPT_COMMAND has something to do with getting something into
the konsole title bar.
Darrell
7:23 p.m.
New subject: [trinity-devel] konsole "Prompt Tip" incorrect (with patch - review and push)
On 04/17/2012 06:42 PM, Darrell Anderson wrote:
Yup, yup, yup. I know that. :)
I was asking whether the tip itself is technically correct.
I recall long ago in a galaxy far away, that to get the directory name to appear in the
konsole title bar required setting the $PROMPT_COMMAND in the environment. Of course, like
many users, one I got things configured the way I wanted I haven't changed a doggone
thing in many years. So now my gray matter is fuzzy about this.
I don't know. I know $PROMPT_COMMAND has something to do with getting something into
the konsole title bar.
Darrell
Ok...
Yes, like you I recall reading something like that years ago, but unlike the
prompt itself, I've never tested whether that tip actually puts it in the
titlebar :) (mostly because I don't want the path in the window :)
--
David C. Rankin, J.D.,P.E.
18 Apr
18 Apr
7:56 a.m.
On 04/17/2012 10:23 PM, David C. Rankin wrote:
On 04/17/2012 06:42 PM, Darrell Anderson wrote:
I use this in my bashrc:
trap 'echo -e "\e]0;$BASH_COMMAND\007"' DEBUG 2> /dev/null
It sets the title to whatever the last command I executed was. very
useful :-)
Calvin
Yup, yup, yup. I know that. :)
I was asking whether the tip itself is technically correct.
I recall long ago in a galaxy far away, that to get the directory name to appear in the
konsole title bar required setting the $PROMPT_COMMAND in the environment. Of course, like
many users, one I got things configured the way I wanted I haven't changed a doggone
thing in many years. So now my gray matter is fuzzy about this.
I don't know. I know $PROMPT_COMMAND has something to do with getting something into
the konsole title bar.
Darrell
Ok...
Yes, like you I recall reading something like that years ago, but unlike the
prompt itself, I've never tested whether that tip actually puts it in the
titlebar :) (mostly because I don't want the path in the window :)
4414
days inactive
4415
days old
5 comments
3 participants
participants (3)
-
Calvin Morrison -
Darrell Anderson -
David C. Rankin