[..]
Sorry for delay.. had more urgent issues to address..
>> The suggested pipe 'setl bt= | help' does indeed override Vim's miserly
>> behavior relative to help windows..
>>
>> Why?
>
> Because Vim identifies help windows by the buftype, so if you clear it,
> Vim no longer thinks it is a help window, so doesn't reuse it.
What I find a little odd is that 'setl bt= | help' clears &bt .. and
only then creates the window (the help command).. and yet it works.
> I would advise against this, as it has other side effects, e.g. using
> :help in the existing window will not reuse it as desired, but open a
> new window. A few other help-window-specific behaviours will also not
> work on the old help window if you do this.
>
>> Another quick question.. in Vimscript, what is the natural idiom to code:
>>
>> if count == 0; do proc_0; fi
>> if count == 1; do proc_1; fi
>> if count> 1; do proc_n; fi
>>
>> Otherwise, is there a decent tutorial on how to write functions in Vim..?
>
> I'm not sure Vimscript has any natural idioms! You will probably get a
> whole bunch of opinions on how best to do anything. Quite possibly the
> best idiom is what seems most natural to you.
Hm. I doubt that... :-)
Anyway.. here goes:
------------------------------------------------------------------------
if exists("loaded_HH")
finish
endif
let loaded_HH = 1
function! MyHelp(s)
" how many help windows already open in this tab?
let hc=len(filter(range(1, winnr('$')), 'getbufvar(winbufnr(v:val), "&ft")==#"help"'))
" No help window yet.. open a new tab and display the help
if hc == 0
tab help | execute "help " a:s | execute ':redraw!'
endif
" One help window already.. let's do a vert split & display the help
if hc == 1
setl bt= | execute "vert help " a:s | execute ':redraw!'
endif
" Two or more..? split the current pane horizontally... etc.
if hc > 1
setl bt= | execute "help " a:s | execute ':redraw!'
endif
endfunction
command! -nargs=* HH call MyHelp(<q-args>)
------------------------------------------------------------------------
So ':HH subject' Does almost what I need, but for one little problem:
The ':redraw' command meant to skip the 'Press Enter to continue'
message at the bottom of the screen saving me the trouble of having to
hit Enter.. only works when creating the new tab page - (hc = 0). For
the other two pipes that cause the screen to be split (hc ≥ 0) it does
not.
Another odd thing I noticed.. the syntax highlighting is badly off for
these two lines:
setl bt= | execute "vert help " a:s | execute ':redraw!'
..
setl bt= | execute "help " a:s | execute ':redraw!'
I switched to the default colorscheme to make sure.. and everything
East of the first pipe does not have the right colors: 'execute' is
white on a black background (same as variables) and the rest of the line
is dark blue (same as comments).
Maybe the suntax file does not like the 'setl bt=' with no value
specified..?
Anyway.. if you or anyone else has any suggestions as to how I should
have written the above in nice idiomatic Vimscript.. rather than what
seems most natural to me...
Oh.. and what would be the right way to emulate hitting the Enter key to
skip those pesky 'Press Enter..' messages..? Something that actually
works and might be a little less cryptic than ':redraw!'..?
Thanks,
cj
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