skipping duplicates in some zle functions

skipping duplicates in some zle functions

[Dominik Vogt]

I'm already using a fairly complicated function bound to Up and
Down that combines up/down-line-or-search and
history-beginning-search-forward/backward (see below).

I want to enhance it so that it skips lines that are identical
to the line that is currently displayed.  E.g. If I have the
following lines in the history (latest one at the bottom):

  ls /tmp
  cd /tmp
  ls foo*
  rm foo
  rm foobar
  ls foo*
  cd

Now I type

  $ ls f<crsr-up>
        ^
        |___ cursor

and get

  $ ls foo*
        ^
        |___ cursor

Now I press <crsr-up> again, and with the current functions, the
second "ls foo*" entry is selected.  But I'd rather skip that one
and proceed to "ls /tmp" immediately.

Any hints how to do this?

------------------------------- snip ----------------------------
function __up_or_down_line_or_beginning_search {
if [[ $LASTWIDGET != down-line-or-beginning-search &&
      $LASTWIDGET != up-line-or-beginning-search ]]; then
    local LBUFFER_STRIPPED="${LBUFFER/#[       ]#/}"
    if [[ $RBUFFER == *$'\n'* ||
          ${LBUFFER_STRIPPED} == "" ]]; then
        __last_up_line=up-line-or-history
        __last_down_line=down-line-or-history
    else
        LBUFFER_STRIPPED="${LBUFFER_STRIPPED/#[^   ]#[   ]#/}"
        if [[ "$LBUFFER_STRIPPED" == "" ]]; then
            __last_up_line=up-line-or-search
            __last_down_line=down-line-or-search
        else
            __last_up_line=history-beginning-search-backward
            __last_down_line=history-beginning-search-forward
        fi
    fi
fi
}
zle -N __up_or_down_line_or_beginning_search

function up-line-or-beginning-search {
    __up_or_down_line_or_beginning_search
    zle .${__last_up_line:-beep}
}
zle -N up-line-or-beginning-search

function down-line-or-beginning-search {
    __up_or_down_line_or_beginning_search
    zle .${__last_down_line:-beep}
}
zle -N down-line-or-beginning-search

bindkey "\e[A" up-line-or-beginning-search   # Cursor up
bindkey "\e[B" down-line-or-beginning-search # Cursor down
------------------------------- snip ----------------------------

Ciao

Dominik ^_^  ^_^

Re: skipping duplicates in some zle functions

[Bart Schaefer]

On Nov 6,  9:54am, Dominik Vogt wrote:
}
} I want to enhance it so that it skips lines that are identical
} to the line that is currently displayed.

I don't suppose `setopt hist_find_no_dups' does what you want?

If not, have you considered `setopt hist_ignore_all_dups' so that the
duplicate lines are never entered into the history in the first place?

Re: skipping duplicates in some zle functions

[Dominik Vogt]

On Thu, Nov 06, 2003 at 03:31:41PM +0000, Bart Schaefer wrote:
> On Nov 6,  9:54am, Dominik Vogt wrote:
> }
> } I want to enhance it so that it skips lines that are identical
> } to the line that is currently displayed.
> 
> I don't suppose `setopt hist_find_no_dups' does what you want?

That's exactly what I need.  Thanks.

> If not, have you considered `setopt hist_ignore_all_dups' so that the
> duplicate lines are never entered into the history in the first place?

I like to repeat commands I have typed recently in sequence, so
this isn't quite what I want.  E.g:

  $ vi foo.c
  $ gcc -o foo foo.c
  $ ./foo
  3x<Up>
  $ vi foo.c
  3x<Up>
  $ gcc -o foo foo.c
  3x<Up>
  $ ./foo
  
...

Ciao

Dominik ^_^  ^_^

Re: skipping duplicates in some zle functions

[Phil Pennock]

On 2003-11-07 at 10:34 +0100, Dominik Vogt wrote:
> I like to repeat commands I have typed recently in sequence, so
> this isn't quite what I want.  E.g:

infer-next-history ?

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