build: release 1.0.1

README.md

@@ -6,7 +6,8 @@ This action slug and expose some github variables.
 
 - put the variable content in lower case,
 - replace any caracter by `-` except `0-9` and `a-z`,
-- limit the string size to 63 caracters
+- remove leading and trailing `-` caracter,
+- limit the string size to 63 caracters.
 
 ## Environement Variables
 
@@ -19,7 +20,7 @@ This action slug and expose some github variables.
 ## Example usage
 
 ```yaml
-- uses: rlespinasse/github-slug-action@1.0.0
+- uses: rlespinasse/github-slug-action@1.0.1
 - name: Print slug variables
   run: |
     echo ${{ env.GITHUB_REF_SLUG }}

entrypoint.sh

@@ -1,12 +1,12 @@
 #!/bin/sh -l
 
 slug_ref() {
-    echo $1 \
-         | tr A-Z a-z \
-         | sed -r 's#refs/.*/##;s/[~\^]+//g;s/[^a-zA-Z0-9]+/-/g;s/^-+\|-+$//g' \
+    echo "$1" \
+         | tr "[:upper:]" "[:lower:]" \
+         | sed -r 's#refs/.*/##;s/[~\^]+//g;s/[^a-zA-Z0-9]+/-/g;s/^-+\|-+$//g;s/^-*//;s/-*$//' \
          | cut -c1-63
 }
 
-echo ::set-env name=GITHUB_REF_SLUG::$(slug_ref $GITHUB_REF)
-echo ::set-env name=GITHUB_HEAD_REF_SLUG::$(slug_ref $GITHUB_HEAD_REF)
-echo ::set-env name=GITHUB_BASE_REF_SLUG::$(slug_ref $GITHUB_BASE_REF)
+echo ::set-env name=GITHUB_REF_SLUG::"$(slug_ref "$GITHUB_REF")"
+echo ::set-env name=GITHUB_HEAD_REF_SLUG::"$(slug_ref "$GITHUB_HEAD_REF")"
+echo ::set-env name=GITHUB_BASE_REF_SLUG::"$(slug_ref "$GITHUB_BASE_REF")"