xref: /vim-8.2.3635/src/vimtutor (revision 0fa313a7)
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
10xx=$1
11export xx
12
13# We need a temp file for the copy.  First try using a standard command.
14tmp="${TMPDIR-/tmp}"
15TUTORCOPY=`mktemp $tmp/tutorXXXXXX || tempfile -p tutor || echo none`
16
17# If the standard commands failed then create a directory to put the copy in.
18# That is a secure way to make a temp file.
19if test "$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
33else
34	TODELETE=$TUTORCOPY
35fi
36
37export TUTORCOPY
38
39# remove the copy of the tutor on exit
40trap "rm -rf $TODELETE" 0 1 2 3 9 11 13 15
41
42# Vim could be called "vim" or "vi".  Also check for "vim6", for people who
43# have Vim 5.x installed as "vim" and Vim 6.0 as "vim6".
44testvim=`which vim6 2>/dev/null`
45if test -f "$testvim"; then
46	VIM=vim6
47else
48	testvim=`which vim`
49	if test -f "$testvim"; then
50		VIM=vim
51	else
52		VIM=vi
53	fi
54fi
55
56# Use Vim to copy the tutor, it knows the value of $VIMRUNTIME
57# The script tutor.vim tells Vim which file to copy
58$VIM -u NONE -c 'so $VIMRUNTIME/tutor/tutor.vim'
59
60# Start vim without any .vimrc, set 'nocompatible'
61$VIM -u NONE -c "set nocp" $TUTORCOPY
62