On 02/09/11 15:33, Peter Slížik wrote:
OK, Thunderbird messed with references to external pictures; and it
was a stupid idea to include pictures, I should have foreseen it.
So, here's a copy with external links instead:
==========================================
Recently I dediced to put the&ff option in my statusline. However, I
want to edit my files *always* in the unix format, even when I am on
Windows. For this reason, I want to have no message shown in the
status line if the file format is set to "unix" (`uncluttered' is the
word here). I want any other format displayed as an error (with red
background).
I wrote this code
:set statusline+=@%(\ %#ErrorMsg#[%{&ff!='unix'?&ff:''}]%*%)@
@ - my debugging begin and end of string markers, in order to be able
to "see" an empty string
%(...%) - grouping is used here to make the leading empty space and
the brackets disappear if the expression yields an empty string
Results:
- if&ff is set to 'dos' or 'mac', the status line is correct:
http://tinyurl.com/vim-statusline-dos
http://tinyurl.com/vim-statusline-mac
- if&ff is set to 'unix', the expression produces an empty string
('@@') followed by two superfluous red spaces:
http://tinyurl.com/vim-statusline-unix
Well, isn't that what you want? Your ternary operator resolves to the
empty string if 'fileformat' is set to "unix", otherwise it resolves to
the 'fileformat' setting.
(Note the same is true for empty&ff, in this case the 'else' branch
of the ternary operator comes into force.)
No, for empty ff it's the "then" branch (not equal to 'unix').
If I remove the '@' markers, just two red spaces are produced.
Strangely, if I put the brackets outside of the #ErrorMsg# code,
everything works perfectly:
:set statusline+=@%(\ [%#ErrorMsg#%{&ff!='unix'?&ff:''}%*]%)@
http://tinyurl.com/vim-statusline-alt-unix
However, that's not a good workaround - it is not exactly what I
imagined for [dos] and [mac] cases:
http://tinyurl.com/vim-statusline-alt-dos
This is not a top-priority bug, of course; but I would appreciate any insights.
Best regards,
Peter
What about a simpler 'statusline' for a start? (If it works, you can
make it more complex)
First, let's start with setting explicitly what the default 'statusline'
(with 'ruler') would say (this is in the help: go to ":help
'statusline'" then search for /with 'ruler' set/
:set statusline=%<%f\ %h%m%r%=%-14.(%l,%c%V%)\ %P
Now let's add someting that should never be empty, or at least, not if
'fileformats' (plural) it not empty itself.
:set statusline=%<%f\ %h%m%r[%{&ff}]%=%-14.(%l,%c%V%)\ %P
------------------------------------^^^^^^^^
This should add the fileformat in brackets at the end of the left part
(just before the elastic blank filler), as one of:
[dos]
[unix]
[mac]
I think I know what happened in your case: Seeing that the expression
between [ and ] resolved to the empty string, the statusline code
removed the brackets: quoting from 'statusline' help:
When all items in a group becomes an empty string (i.e. flags that are
not set) and a minwid is not set for the group, the whole group will
become empty. This will make a group like the following disappear
completely from the statusline when none of the flags are set. >
:set statusline=...%(\ [%M%R%H]%)...
Best regards,
Tony.
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