From 693b5922234f070a133ccacdd87fc0ede442d5a7 Mon Sep 17 00:00:00 2001
From: Mike Burns <mburns@thoughtbot.com>
Date: Fri, 30 Mar 2018 10:39:41 -0400
Subject: Set the LOGNAME from whoami

Well, $LOGNAME is defined by POSIX (see
a801c4c58902cae7b835d890487edc39bd7da142) but it's not appearing in
reality under clean environments:

    ~% env -i /bin/bash
    mike:/home/mike$ echo $LOGNAME

    mike:/home/mike$ exit
    ~% env -i /bin/dash
    $ echo $LOGNAME

    $ exit
    ~% env -i /bin/ksh
    $ echo $LOGNAME

    $ exit
    ~% env -i /usr/bin/zsh
    ~% echo $LOGNAME
    mike
    ~% exit

Fall back to whoami(1) when $LOGNAME is not set.

Modify one of the tests to run with a restricted environment in order to
test this. I had tried modifying the test-driver to run all tests in a
restricted environment but the test-driver script is generated by
Automake.

Closes #165.
---
 share/rcm.sh.in | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'share/rcm.sh.in')

diff --git a/share/rcm.sh.in b/share/rcm.sh.in
index 80e9e91..d0387e2 100644
--- a/share/rcm.sh.in
+++ b/share/rcm.sh.in
@@ -13,6 +13,10 @@ MKDIR=mkdir
 INSTALL=rcup
 ROOT_DIR="$HOME"
 
+if [ -z "$LOGNAME" ]; then
+  LOGNAME=$(whoami)
+fi
+
 ln_v() {
   $VERBOSE "'$1' -> '$2'"
   ln -s "$1" "$2"
-- 
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