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--- OpenFOAM-5.x.org/etc/bashrc 2017-07-25 18:43:40.000000000 +0200
+++ OpenFOAM-5.x/etc/bashrc 2017-12-11 13:36:09.479818186 +0100
@@ -42,15 +42,17 @@
#
# Please set to the appropriate path if the default is not correct.
#
-[ ${BASH_SOURCE:-$0} ] && \
-export FOAM_INST_DIR=$(cd $(dirname ${BASH_SOURCE:-$0})/../.. && pwd -P) || \
-export FOAM_INST_DIR=$HOME/$WM_PROJECT
-# export FOAM_INST_DIR=~$WM_PROJECT
+rc="${BASH_SOURCE:-${ZSH_NAME:+$0}}"
+[ -n "$rc" ] && FOAM_INST_DIR=$(\cd $(dirname $rc)/../.. && \pwd -P) || \
+FOAM_INST_DIR=$HOME/$WM_PROJECT
# export FOAM_INST_DIR=/opt/$WM_PROJECT
# export FOAM_INST_DIR=/usr/local/$WM_PROJECT
#
# END OF (NORMAL) USER EDITABLE PART
################################################################################
+: # Extra safety - if the user commented out all fallback values
+export FOAM_INST_DIR
+unset rc
# The default environment variables below can be overridden in a prefs.sh file
# located in ~/.OpenFOAM/$WM_PROJECT_VERSION, ~/.OpenFOAM,
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