Package: bash-completion
Version: 1:2.7-1
Severity: important
File: /usr/share/bash-completion/completions/man
Usertags: regression
Tags: patch
I have a manual page path set to some additional manuals. I set MANPATH
to include a final colon so that man will append its default set of
paths to the variable. The MANPATH value can also have the colon at
the start for prepending or have a double colon for inserting.
$ MANPATH=foo manpath
manpath: warning: $MANPATH set, ignoring /etc/manpath.config
foo
$ MANPATH=foo: manpath
manpath: warning: $MANPATH set, appending /etc/manpath.config
foo:/usr/local/man:/usr/local/share/man:/usr/share/man
$ MANPATH=:foo manpath
manpath: warning: $MANPATH set, prepending /etc/manpath.config
/usr/local/man:/usr/local/share/man:/usr/share/man:foo
$ MANPATH=bar::foo manpath
manpath: warning: $MANPATH set, inserting /etc/manpath.config
bar:/usr/local/man:/usr/local/share/man:/usr/share/man:foo
Unfortunately the new version of the manual page completion
unconditionally uses $MANPATH when it is set instead of leaving
interpretation of the variable up to the manpath command:
local manpath="$MANPATH"
[[ -z $manpath ]] && \
manpath=$( manpath 2>/dev/null || command man -w 2>/dev/null )
[[ -z $manpath ]] && manpath="/usr/share/man:/usr/local/share/man"
The old version of the manual page completion used the output of the
manpath command instead, which includes the above colon semantics.
local manpath
if [[ $OSTYPE == *@(darwin|linux|freebsd|cygwin)* ]] || _userland GNU; then
manpath=$( manpath 2>/dev/null || command man --path )
else
manpath=$MANPATH
fi
I think the correct version should look like this:
local manpath
manpath=$( manpath 2>/dev/null || command man -w 2>/dev/null || command man
--path 2>/dev/null )
[[ -z $manpath ]] && manpath=$MANPATH
[[ -z $manpath ]] && manpath="/usr/share/man:/usr/local/share/man"
This satisfies several issues for the manual path:
* The first choice for manpath should always be the output of the
commands, because they are the arbiter of MANPATH semantics.
* All three commands should be used to cover all man versions
* The second choice should be MANPATH in case the user set it to
workaround their manual path commands not working.
* The third choice should be a reasonable FHS-compliant default
-- System Information:
Debian Release: buster/sid
APT prefers testing-debug
APT policy: (900, 'testing-debug'), (900, 'testing'), (800,
'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700,
'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8),
LANGUAGE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
-- no debconf information
--
bye,
pabs
https://wiki.debian.org/PaulWise
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