contrib/completion/git-completion.tcsh

   1 # tcsh completion support for core Git.
   2 #
   3 # Copyright (C) 2012 Marc Khouzam <marc.khouzam@gmail.com>
   4 # Distributed under the GNU General Public License, version 2.0.
   5 #
   6 # When sourced, this script will generate a new script that uses
   7 # the git-completion.bash script provided by core Git.  This new
   8 # script can be used by tcsh to perform git completion.
   9 # The current script also issues the necessary tcsh 'complete'
  10 # commands.
  11 #
  12 # To use this completion script:
  13 #
  14 #    0) You need tcsh 6.16.00 or newer.
  15 #    1) Copy both this file and the bash completion script to ${HOME}.
  16 #       You _must_ use the name ${HOME}/.git-completion.bash for the
  17 #       bash script.
  18 #       (e.g. ~/.git-completion.tcsh and ~/.git-completion.bash).
  19 #    2) Add the following line to your .tcshrc/.cshrc:
  20 #        source ~/.git-completion.tcsh
  21 #    3) For completion similar to bash, it is recommended to also
  22 #       add the following line to your .tcshrc/.cshrc:
  23 #        set autolist=ambiguous
  24 #       It will tell tcsh to list the possible completion choices.
  25
  26 set __git_tcsh_completion_version = `\echo ${tcsh} | \sed 's/\./ /g'`
  27 if ( ${__git_tcsh_completion_version[1]} < 6 || \
  28      ( ${__git_tcsh_completion_version[1]} == 6 && \
  29        ${__git_tcsh_completion_version[2]} < 16 ) ) then
  30         echo "git-completion.tcsh: Your version of tcsh is too old, you need version 6.16.00 or newer.  Git completion will not work."
  31         exit
  32 endif
  33 unset __git_tcsh_completion_version
  34
  35 set __git_tcsh_completion_original_script = ${HOME}/.git-completion.bash
  36 set __git_tcsh_completion_script = ${HOME}/.git-completion.tcsh.bash
  37
  38 # Check that the user put the script in the right place
  39 if ( ! -e ${__git_tcsh_completion_original_script} ) then
  40         echo "git-completion.tcsh: Cannot find: ${__git_tcsh_completion_original_script}.  Git completion will not work."
  41         exit
  42 endif
  43
  44 cat << EOF >! ${__git_tcsh_completion_script}
  45 #!bash
  46 #
  47 # This script is GENERATED and will be overwritten automatically.
  48 # Do not modify it directly.  Instead, modify git-completion.tcsh
  49 # and source it again.
  50
  51 source ${__git_tcsh_completion_original_script}
  52
  53 # Remove the colon as a completion separator because tcsh cannot handle it
  54 COMP_WORDBREAKS=\${COMP_WORDBREAKS//:}
  55
  56 # For file completion, tcsh needs the '/' to be appended to directories.
  57 # By default, the bash script does not do that.
  58 # We can achieve this by using the below compatibility
  59 # method of the git-completion.bash script.
  60 __git_index_file_list_filter ()
  61 {
  62         __git_index_file_list_filter_compat
  63 }
  64
  65 # Set COMP_WORDS in a way that can be handled by the bash script.
  66 COMP_WORDS=(\$2)
  67
  68 # The cursor is at the end of parameter #1.
  69 # We must check for a space as the last character which will
  70 # tell us that the previous word is complete and the cursor
  71 # is on the next word.
  72 if [ "\${2: -1}" == " " ]; then
  73         # The last character is a space, so our location is at the end
  74         # of the command-line array
  75         COMP_CWORD=\${#COMP_WORDS[@]}
  76 else
  77         # The last character is not a space, so our location is on the
  78         # last word of the command-line array, so we must decrement the
  79         # count by 1
  80         COMP_CWORD=\$((\${#COMP_WORDS[@]}-1))
  81 fi
  82
  83 # Call _git() or _gitk() of the bash script, based on the first argument
  84 _\${1}
  85
  86 IFS=\$'\n'
  87 if [ \${#COMPREPLY[*]} -eq 0 ]; then
  88         # No completions suggested.  In this case, we want tcsh to perform
  89         # standard file completion.  However, there does not seem to be way
  90         # to tell tcsh to do that.  To help the user, we try to simulate
  91         # file completion directly in this script.
  92         #
  93         # Known issues:
  94         #     - Possible completions are shown with their directory prefix.
  95         #     - Completions containing shell variables are not handled.
  96         #     - Completions with ~ as the first character are not handled.
  97
  98         # No file completion should be done unless we are completing beyond
  99         # the git sub-command.  An improvement on the bash completion :)
 100         if [ \${COMP_CWORD} -gt 1 ]; then
 101                 TO_COMPLETE="\${COMP_WORDS[\${COMP_CWORD}]}"
 102
 103                 # We don't support ~ expansion: too tricky.
 104                 if [ "\${TO_COMPLETE:0:1}" != "~" ]; then
 105                         # Use ls so as to add the '/' at the end of directories.
 106                         COMPREPLY=(\`ls -dp \${TO_COMPLETE}* 2> /dev/null\`)
 107                 fi
 108         fi
 109 fi
 110
 111 # tcsh does not automatically remove duplicates, so we do it ourselves
 112 echo "\${COMPREPLY[*]}" | sort | uniq
 113
 114 # If there is a single completion and it is a directory, we output it
 115 # a second time to trick tcsh into not adding a space after it.
 116 if [ \${#COMPREPLY[*]} -eq 1 ] && [ "\${COMPREPLY[0]: -1}" == "/" ]; then
 117         echo "\${COMPREPLY[*]}"
 118 fi
 119
 120 EOF
 121
 122 # Don't need this variable anymore, so don't pollute the users environment
 123 unset __git_tcsh_completion_original_script
 124
 125 complete git  'p,*,`bash ${__git_tcsh_completion_script} git "${COMMAND_LINE}"`,'
 126 complete gitk 'p,*,`bash ${__git_tcsh_completion_script} gitk "${COMMAND_LINE}"`,'