From c25450f77ed02c20d00b76ee3b33ff43838739a2 Mon Sep 17 00:00:00 2001
From: Michael Gasch <15986659+embano1@users.noreply.github.com>
Date: Sun, 16 Apr 2023 20:33:30 +0200
Subject: [PATCH] fix: Shell escaping issue

Signed-off-by: Michael Gasch <15986659+embano1@users.noreply.github.com>
---
 .github/workflows/check-wip.yaml |  4 +++-
 README.md                        | 20 +++++++++--------
 action.yml                       | 38 +++++++++++++++++++++++++++-----
 3 files changed, 47 insertions(+), 15 deletions(-)

diff --git a/.github/workflows/check-wip.yaml b/.github/workflows/check-wip.yaml
index 050e037..1601ee5 100644
--- a/.github/workflows/check-wip.yaml
+++ b/.github/workflows/check-wip.yaml
@@ -9,4 +9,6 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check WIP in PR Title
-        uses: embano1/wip@v1
\ No newline at end of file
+        uses: embano1/wip@v2
+        env:
+          TITLE: ${{ github.event.pull_request.title }}
\ No newline at end of file
diff --git a/README.md b/README.md
index 3fdfa26..0adb25f 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,8 @@ work-in-progress ("WIP") patterns using regular expressions in `BASH`.
 
 ## Simple with Defaults
 
+Uses `^[[:space:]]*(WIP)+(:)*` regex pattern to match against the PR title.
+
 ```yaml
 name: Check "WIP" in PR Title
 
@@ -19,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check WIP in PR Title
-        uses: embano1/wip@v1
+        uses: embano1/wip@v2
 ```
 
 ## Custom Options
@@ -36,22 +38,22 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check WIP in PR Title
-        uses: embano1/wip@v1
+        uses: embano1/wip@v2
         with:
           # this is also the default value
           title: "${{ github.event.pull_request.title }}"
 
-          # only matches PRs where title is "WIP" only
+          # only matches PRs where title is exactly "WIP"
           regex: "^WIP$" 
 
 ```
 
 ## Configuration Options
 
-| Input   | Type     | Required | Default                                  | Description                                                                                                                                                                   |
-|---------|----------|----------|------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| `title` | `string` | yes      | `${{ github.event.pull_request.title }}` | The title to perform regular expression pattern matching against. Typically a field from the Github [`context`](https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#github-context) is used.                                                                                                              |
-| `regex` | `string` | yes      | `^[[:space:]]*(WIP)+(:)*`                | The regular expression to perform. The default value matches the word `WIP` (optionally followed by `:`) and ignores any whitespace character(s) at the beginning of the text |
+| Input   | Type     | Required | Default                                  | Description                                                                                                                                                                                                                            |
+|---------|----------|----------|------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `title` | `string` | yes      | `${{ github.event.pull_request.title }}` | The title to perform regular expression pattern matching against. Typically a field from the Github [`context`](https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#github-context) is used. |
+| `regex` | `string` | yes      | `^[[:space:]]*(WIP)+(:)*`                | The regular expression to perform. The default value matches the word `WIP` (optionally followed by `:`) and ignores any whitespace character(s) at the beginning of the text.                                                          |
 
-⚠️ Currently regular expression pattern matching is **case-insensitive**, i.e.
-`wip` would also match.
\ No newline at end of file
+> **Note**  
+> Currently regular expression pattern matching is **case-insensitive**, i.e., `wip` would also match.
\ No newline at end of file
diff --git a/action.yml b/action.yml
index 4220682..589bcb1 100644
--- a/action.yml
+++ b/action.yml
@@ -13,23 +13,51 @@ inputs:
     required: true
     # starts with zero or more leading whitespace chars, WIP and zero or more colons
     default: "^[[:space:]]*(WIP)+(:)*"
+  debug:
+    description: "Enable verbose logging"
+    required: false
+    default: "false"
 runs:
   using: "composite"
   steps:
     - shell: bash
+      env:
+        TITLE: ${{ inputs.title }}
+        REGEX: ${{ inputs.regex }}
+        DEBUG: ${{ inputs.debug }}
       run: |
-        set -ex
+        set -e
 
+        if [[ ${DEBUG} == "true" ]]; then 
+          echo "Enabling debug output"
+          set -x
+        fi
+        
         # TODO (@mgasch): make configurable
         # case-insensitive
         shopt -s nocasematch
-
-        if [[ '${{ inputs.title }}' =~ ${{ inputs.regex }} ]]; then
+        
+        if [[ -z ${TITLE} ]]; then 
+          echo "::error::title input must be set";
+          exit 1
+        fi
+        
+        if [[ -z ${REGEX} ]]; then 
+          echo "::error::regex input must be set";
+          exit 1
+        fi
+        
+        if [[ ${TITLE} =~ ${REGEX} ]]; then
           echo "::error::Title marked as work in progress"
           exit 1
         else
-          echo "::debug::Title not marked as work in progress"
+          echo "Title not marked as work in progress"
         fi
-
+        
         # unset nocasematch option
         shopt -u nocasematch
+
+        if [[ ${DEBUG} == "true" ]]; then 
+          echo "Disabling debug output"
+          set +x
+        fi