src/vimtutor

   1 #! /bin/sh
   2
   3 # Start Vim on a copy of the tutor file.
   4
   5 # Usage: vimtutor [xx], where xx is a language code like "es" or "nl".
   6 # When an argument is given, it tries loading that tutor.
   7 # When this fails or no argument was given, it tries using 'v:lang'
   8 # When that also fails, it uses the English version.
   9
  10 xx=$1
  11 export xx
  12
  13 # We need a temp file for the copy.  First try using a standard command.
  14 tmp="${TMPDIR-/tmp}"
  15 TUTORCOPY=`mktemp $tmp/tutorXXXXXX || tempfile -p tutor || echo none`
  16
  17 # If the standard commands failed then create a directory to put the copy in.
  18 # That is a secure way to make a temp file.
  19 if test "$TUTORCOPY" = none; then
  20         tmpdir=$tmp/vimtutor$$
  21         OLD_UMASK=`umask`
  22         umask 077
  23         getout=no
  24         mkdir $tmpdir || getout=yes
  25         umask $OLD_UMASK
  26         if test $getout = yes; then
  27                 echo "Could not create directory for tutor copy, exiting."
  28                 exit 1
  29         fi
  30         TUTORCOPY=$tmpdir/tutorcopy
  31         touch $TUTORCOPY
  32         TODELETE=$tmpdir
  33 else
  34         TODELETE=$TUTORCOPY
  35 fi
  36
  37 export TUTORCOPY
  38
  39 # remove the copy of the tutor on exit
  40 trap "rm -rf $TODELETE" 0 1 2 3 9 11 13 15
  41
  42 # Vim could be called "vim" or "vi".  Also check for "vimN", for people who
  43 # have Vim installed with its version number.
  44 # We anticipate up to a future Vim 8 version :-).
  45 seq="vim vim8 vim75 vim74 vim73 vim72 vim71 vim70 vim7 vim6 vi"
  46 for i in $seq; do
  47         testvim=`which $i 2>/dev/null`
  48         if test -f "$testvim"; then
  49                 VIM=$i
  50                 break
  51         fi
  52 done
  53
  54 # When no Vim version was found fall back to "vim", you'll get an error message
  55 # below.
  56 if test -z "$VIM"; then
  57         VIM=vim
  58 fi
  59
  60 # Use Vim to copy the tutor, it knows the value of $VIMRUNTIME
  61 # The script tutor.vim tells Vim which file to copy
  62 $VIM -u NONE -c 'so $VIMRUNTIME/tutor/tutor.vim'
  63
  64 # Start vim without any .vimrc, set 'nocompatible'
  65 $VIM -u NONE -c "set nocp" $TUTORCOPY