Package: debconf-doc
Version: 1.5.73
Severity: normal
There appears to be an error in the debconf-devel(7) man page. In the
'ADVANCED PROGRAMMING WITH DEBCONF'/'Config file handling' section there's the
following example:
...
cp -a -f $CONFIGFILE $CONFIGFILE.tmp
# If the admin deleted or commented some variables but then set
# them via debconf, (re-)add them to the conffile.
test -z "$FOO" || grep -Eq '^ *FOO=' $CONFIGFILE || \
echo "FOO=" >> $CONFIGFILE
test -z "$BAR" || grep -Eq '^ *BAR=' $CONFIGFILE || \
echo "BAR=" >> $CONFIGFILE
sed -e "s/^ *FOO=.*/FOO=\"$FOO\"/" \
-e "s/^ *BAR=.*/BAR=\"$BAR\"/" \
< $CONFIGFILE > $CONFIGFILE.tmp
mv -f $CONFIGFILE.tmp $CONFIGFILE
...
Note that in the second stanza it suggests writing to $CONFFILE, but
then $CONFILE is overwritten by the last 'mv ...' line, so those
changes will be overwritten. I think the tests just need to look at
the temp file, not the main file, e.g.:
...
cp -a -f $CONFIGFILE $CONFIGFILE.tmp
# If the admin deleted or commented some variables but then set
# them via debconf, (re-)add them to the conffile.
test -z "$FOO" || grep -Eq '^ *FOO=' $CONFIGFILE.tmp || \
echo "FOO=" >> $CONFIGFILE.tmp
test -z "$BAR" || grep -Eq '^ *BAR=' $CONFIGFILE.tmp || \
echo "BAR=" >> $CONFIGFILE.tmp
sed -e "s/^ *FOO=.*/FOO=\"$FOO\"/" \
-e "s/^ *BAR=.*/BAR=\"$BAR\"/" \
< $CONFIGFILE > $CONFIGFILE.tmp
mv -f $CONFIGFILE.tmp $CONFIGFILE
...
Thanks.
jamie.
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