[split] Move jump plugin to oh-my-fish/plugin-jump

https://github.com/oh-my-fish/plugin-jump

plugins/jump/README.md

-jump
-====
-
-A port of [Jeroen Janssens' "jump" utility] [1] to the fish shell (and [Oh My Fish!] [2]).
-
-[1]: http://jeroenjanssens.com/2013/08/16/quickly-navigate-your-filesystem-from-the-command-line.html
-[2]: https://github.com/bpinto/oh-my-fish

plugins/jump/jump.fish

-function jump
-  if test (count $argv) -ne 1
-    echo "Usage: jump <MARK_NAME>"
-  else
-    if test -d $MARKPATH/$argv[1] -a -L $MARKPATH/$argv[1]
-      cd $MARKPATH/$argv[1]
-    else
-      echo "No such mark: $argv[1]"
-    end
-  end
-end

plugins/jump/jump.load

-set -gx MARKPATH $HOME/.marks
-command mkdir -p $MARKPATH
-
-complete -c jump -f -a '(ls ~/.marks)'
-complete -c unmark -f -a '(ls ~/.marks)'

plugins/jump/mark.fish

-function mark
-  if test (count $argv) -eq 0 -o (count $argv) -gt 2
-    echo "Usage: mark <MARK_NAME> [DIRECTORY]"
-  else if test -e $MARKPATH/$argv[1]
-    if test -d $MARKPATH/$argv[1] -a -L $MARKPATH/$argv[1]
-      echo "A mark named $argv[1] already exists."
-    else
-      echo "$MARKPATH/$argv[1] already exists."
-    end
-  else if test (count $argv) -eq 1
-    command ln -s (pwd) $MARKPATH/$argv[1]
-  else if test (count $argv) -eq 2
-    if test -d $argv[2]
-      set -l current_dir (pwd)
-      cd $argv[2]
-      command ln -s (pwd) $MARKPATH/$argv[1]
-      cd $current_dir
-    else
-      echo "$argv[2] is not a valid directory."
-    end
-  end
-end

plugins/jump/marks.fish

-function marks
-  if test (count $argv) -gt 0
-    echo "Usage: marks"
-  else
-    set -l file_list (command ls $MARKPATH)
-    if test (count $file_list) -eq 0
-      echo "No marks currently defined."
-    else
-      set -l mark_list
-      for file in $file_list
-        if test -d $MARKPATH/$file -a -L $MARKPATH/$file
-          set mark_list $mark_list $file
-        end
-      end
-      if test (count $mark_list) -eq 0
-        echo "No marks currently defined."
-      else
-        set -l current_dir (pwd)
-        set -l output ""
-        for mark_name in $mark_list
-          cd $MARKPATH/$mark_name
-          set -l real_path (pwd)
-          set output "$output$mark_name -> $real_path"\n
-        end
-        echo $output | column -t
-        cd $current_dir
-      end
-    end
-  end
-end

plugins/jump/unmark.fish

-function unmark
-  if test (count $argv) -eq 0
-    echo "Usage: unmark <MARK_NAME>..."
-  else
-    for mark_name in $argv
-      if test -d $MARKPATH/$mark_name -a -L $MARKPATH/$mark_name
-        command rm -i $MARKPATH/$mark_name
-      else
-        echo "No such mark: $mark_name"
-      end
-    end
-  end
-end