use safer bash options

2 files changed, 9 insertions, 3 deletions

diff --git a/gemtexter b/gemtexter
index a76e219..9959c1e 100755
--- a/gemtexter
+++ b/gemtexter
@@ -19,7 +19,13 @@ readonly DATE
 readonly SED
 readonly GREP
 
-set -e
+# Set unset variables to make 'set -u' work, they can optionally be passed as
+# enviroments to Gemtexter
+test -z "$CONFIG_FILE_PATH" && CONFIG_FILE_PATH=''
+test -z "$GIT_COMMIT_MESSAGE" && GIT_COMMIT_MESSAGE=''
+test -z "$LOG_VERBOSE" && LOG_VERBOSE=''
+
+set -euf -o pipefail
 
 if [[ -n "$CONFIG_FILE_PATH" ]]; then
     source "$CONFIG_FILE_PATH"
diff --git a/lib/generate.source.sh b/lib/generate.source.sh
index 848e7fd..1c0a823 100644
--- a/lib/generate.source.sh
+++ b/lib/generate.source.sh
@@ -2,8 +2,8 @@
 generate::make_link () {
     local -r what="$1"; shift
     local -r line="${1/=> }"; shift
-    local link
-    local descr
+    local link=''
+    local descr=''
 
     while read -r token; do
         if [ -z "$link" ]; then