Update CHANGELOG

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/label-sponsor.yml

@@ -1,9 +1,6 @@
 name: label-sponsor
 
 on:
-  pull_request:
-    types:
-      - 'opened'
   issues:
     types:
       - 'opened'

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## 2.3.0 (2021/04/07)
+
+* Allow overriding flavor (#63)
+* Prefix/suffix not taken into account for `match`, `semver` and `schedule` types (#62)
+
+## 2.2.1 (2021/04/05)
+
+* Skip and display warning if tag does not match (#59)
+
 ## 2.2.0 (2021/04/03)
 
 * Improve logging (#58)

README.md

@@ -437,6 +437,7 @@ a custom value through `value` attribute.
 | `v2.0.8-beta.67`        | `v(.*)`                       | `1`     | `2.0.8-beta.67`        |
 | `v2.0.8-beta.67`        | `v(\d.\d)`                    | `1`     | `2.0`                  |
 | `20200110-RC2`          | `\d+`                         | `0`     | `20200110`             |
+| `p1/v1.2.3`             | `p1-v(\d.\d.\d)`              | `1`     | `1.2.3`                |
 
 Extended attributes and default values:
 
@@ -470,11 +471,11 @@ tags: |
 
 ```yaml
 tags: |
-  # minimal branch event
+  # branch event
   type=ref,event=branch
-  # minimal tag event
+  # tag event
   type=ref,event=tag
-  # minimal pull request event
+  # pull request event
   type=ref,event=pr
 ```
 
@@ -495,11 +496,11 @@ Extended attributes and default values:
 
 ```yaml
 tags: |
-  # event branch
+  # branch event
   type=ref,enable=true,priority=600,prefix=,suffix=,event=
-  # event tag
+  # tag event
   type=ref,enable=true,priority=600,prefix=,suffix=,event=
-  # event pr
+  # pull request event
   type=ref,enable=true,priority=600,prefix=pr-,suffix=,event=
 ```
 

__tests__/fixtures/event_tag_p1-v1.0.0.env

@@ -0,0 +1,23 @@
+GITHUB_ACTION=crazy-maxghaction-dump-context
+GITHUB_ACTIONS=true
+GITHUB_ACTION_PATH=/home/runner/work/_actions/crazy-max/ghaction-dump-context/v1
+GITHUB_ACTOR=crazy-max
+GITHUB_API_URL=https://api.github.com
+GITHUB_BASE_REF=
+GITHUB_ENV=/home/runner/work/_temp/_runner_file_commands/set_env_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_EVENT_NAME=push
+#GITHUB_EVENT_PATH=/home/runner/work/_temp/_github_workflow/event.json
+GITHUB_GRAPHQL_URL=https://api.github.com/graphql
+GITHUB_HEAD_REF=
+GITHUB_JOB=event
+GITHUB_PATH=/home/runner/work/_temp/_runner_file_commands/add_path_6ee180c2-b331-434a-a867-89534cbefd83
+GITHUB_REF=refs/tags/p1/v1.0.0
+GITHUB_REPOSITORY=crazy-max/test-docker-action
+GITHUB_REPOSITORY_OWNER=crazy-max
+GITHUB_RETENTION_DAYS=90
+GITHUB_RUN_ID=325968230
+GITHUB_RUN_NUMBER=4
+GITHUB_SERVER_URL=https://github.com
+GITHUB_SHA=90dd6032fac8bda1b6c4436a2e65de27961ed071
+GITHUB_WORKFLOW=event
+GITHUB_WORKSPACE=/home/runner/work/test-docker-action/test-docker-action

__tests__/meta.test.ts

@@ -837,24 +837,29 @@ describe('tag', () => {
       {
         images: ['org/app', 'ghcr.io/user/app'],
         tags: [
-          `type=match,"pattern=/^v(\\d.\\d.\\d)$/ig",group=1`,
+          `type=match,"pattern=v(.*)-beta.(.*)",group=1`,
+          `type=match,"pattern=v(.*)-beta.(.*)",group=2`,
         ]
       } as Inputs,
       {
-        main: 'v2.0.8-beta.67',
-        partial: [],
-        latest: false
+        main: '2.0.8',
+        partial: ['67'],
+        latest: true
       } as Version,
       [
-        'org/app:v2.0.8-beta.67',
-        'ghcr.io/user/app:v2.0.8-beta.67'
+        'org/app:2.0.8',
+        'org/app:67',
+        'org/app:latest',
+        'ghcr.io/user/app:2.0.8',
+        'ghcr.io/user/app:67',
+        'ghcr.io/user/app:latest'
       ],
       [
         "org.opencontainers.image.title=Hello-World",
         "org.opencontainers.image.description=This your first repo!",
         "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
         "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
-        "org.opencontainers.image.version=v2.0.8-beta.67",
+        "org.opencontainers.image.version=2.0.8",
         "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
         "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
         "org.opencontainers.image.licenses=MIT"
@@ -870,20 +875,17 @@ describe('tag', () => {
         ]
       } as Inputs,
       {
-        main: 'sometag',
+        main: undefined,
         partial: [],
         latest: false
       } as Version,
-      [
-        'org/app:sometag',
-        'ghcr.io/user/app:sometag'
-      ],
+      [],
       [
         "org.opencontainers.image.title=Hello-World",
         "org.opencontainers.image.description=This your first repo!",
         "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
         "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
-        "org.opencontainers.image.version=sometag",
+        "org.opencontainers.image.version=",
         "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
         "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
         "org.opencontainers.image.licenses=MIT"
@@ -1089,6 +1091,125 @@ describe('tag', () => {
         "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
         "org.opencontainers.image.licenses=MIT"
       ]
+    ],
+    [
+      'tag17',
+      'event_tag_p1-v1.0.0.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=match,"pattern=/^v(\\d.\\d.\\d)$/ig",group=1`,
+          `type=match,pattern=\\d.\\d.\\d`,
+          `type=match,pattern=\\d.\\d`,
+          `type=ref,event=pr`,
+          `type=sha`
+        ]
+      } as Inputs,
+      {
+        main: '1.0.0',
+        partial: ['1.0', 'sha-90dd603'],
+        latest: true
+      } as Version,
+      [
+        'org/app:1.0.0',
+        'org/app:1.0',
+        'org/app:sha-90dd603',
+        'org/app:latest',
+        'ghcr.io/user/app:1.0.0',
+        'ghcr.io/user/app:1.0',
+        'ghcr.io/user/app:sha-90dd603',
+        'ghcr.io/user/app:latest'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.0.0",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag18',
+      'event_tag_p1-v1.0.0.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=match,pattern=p1-v(\\d.\\d.\\d),group=1`,
+          `type=match,pattern=p1-v(\\d.\\d),group=1`,
+          `type=match,pattern=p1-v(\\d.\\d),group=3`,
+          `type=ref,event=pr`,
+          `type=sha`
+        ]
+      } as Inputs,
+      {
+        main: '1.0.0',
+        partial: ['1.0', 'sha-90dd603'],
+        latest: true
+      } as Version,
+      [
+        'org/app:1.0.0',
+        'org/app:1.0',
+        'org/app:sha-90dd603',
+        'org/app:latest',
+        'ghcr.io/user/app:1.0.0',
+        'ghcr.io/user/app:1.0',
+        'ghcr.io/user/app:sha-90dd603',
+        'ghcr.io/user/app:latest'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.0.0",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'tag19',
+      'event_tag_p1-v1.0.0.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=match,pattern=p1-v(\\d.\\d.\\d),group=1`,
+          `type=match,pattern=p1-v(\\d.\\d),group=1,suffix=`,
+          `type=ref,event=pr`,
+          `type=sha`
+        ],
+        flavor: [
+          `suffix=-dev`
+        ]
+      } as Inputs,
+      {
+        main: '1.0.0-dev',
+        partial: ['1.0', 'sha-90dd603-dev'],
+        latest: true
+      } as Version,
+      [
+        'org/app:1.0.0-dev',
+        'org/app:1.0',
+        'org/app:sha-90dd603-dev',
+        'org/app:latest',
+        'ghcr.io/user/app:1.0.0-dev',
+        'ghcr.io/user/app:1.0',
+        'ghcr.io/user/app:sha-90dd603-dev',
+        'ghcr.io/user/app:latest'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=1.0.0-dev",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
     ]
   ])('given %p with %p event', tagsLabelsTest);
 });
@@ -1498,6 +1619,72 @@ describe('pr', () => {
         "org.opencontainers.image.licenses=MIT"
       ]
     ],
+    [
+      'pr05',
+      'event_pull_request.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=ref,event=pr`
+        ],
+        flavor: [
+          `prefix=glo-`,
+          `suffix=-bal`
+        ]
+      } as Inputs,
+      {
+        main: 'pr-2-bal',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:pr-2-bal',
+        'ghcr.io/user/app:pr-2-bal'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=pr-2-bal",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=1e9249f05bfc090e0688b8fb9c1b347586add504",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
+    [
+      'pr06',
+      'event_pull_request.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=ref,event=pr,prefix=`
+        ],
+        flavor: [
+          `prefix=glo-`,
+          `suffix=-bal`
+        ]
+      } as Inputs,
+      {
+        main: '2-bal',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:2-bal',
+        'ghcr.io/user/app:2-bal'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=2-bal",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=1e9249f05bfc090e0688b8fb9c1b347586add504",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ]
   ])('given %p with %p event', tagsLabelsTest);
 });
 
@@ -1678,6 +1865,39 @@ describe('schedule', () => {
         "org.opencontainers.image.licenses=MIT"
       ]
     ],
+    [
+      'schedule07',
+      'event_schedule.env',
+      {
+        images: ['org/app', 'ghcr.io/user/app'],
+        tags: [
+          `type=schedule`,
+        ],
+        flavor: [
+          `prefix=glo-`,
+          `suffix=-bal`
+        ]
+      } as Inputs,
+      {
+        main: 'glo-nightly-bal',
+        partial: [],
+        latest: false
+      } as Version,
+      [
+        'org/app:glo-nightly-bal',
+        'ghcr.io/user/app:glo-nightly-bal'
+      ],
+      [
+        "org.opencontainers.image.title=Hello-World",
+        "org.opencontainers.image.description=This your first repo!",
+        "org.opencontainers.image.url=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.source=https://github.com/octocat/Hello-World",
+        "org.opencontainers.image.version=glo-nightly-bal",
+        "org.opencontainers.image.created=2020-01-10T00:30:00.000Z",
+        "org.opencontainers.image.revision=90dd6032fac8bda1b6c4436a2e65de27961ed071",
+        "org.opencontainers.image.licenses=MIT"
+      ]
+    ],
   ])('given %p with %p event', tagsLabelsTest);
 });
 

__tests__/tag.test.ts

@@ -21,8 +21,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Schedule],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "pattern": "nightly"
           }
         },
@@ -31,8 +29,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Semver],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "pattern": "{{version}}",
             "value": ""
           }
@@ -42,8 +38,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Match],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "pattern": "\\d.\\d.\\d",
             "group": "0",
             "value": ""
@@ -54,8 +48,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Edge],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "branch": ""
           }
         },
@@ -64,8 +56,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Ref],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "event": RefEvent.Branch
           }
         },
@@ -74,8 +64,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Ref],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "event": RefEvent.Tag
           }
         },
@@ -85,7 +73,6 @@ describe('transform', () => {
             "priority": DefaultPriorities[Type.Ref],
             "enable": "true",
             "prefix": "pr-",
-            "suffix": "",
             "event": RefEvent.PR
           }
         },
@@ -94,8 +81,6 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Raw],
             "enable": "true",
-            "prefix": "",
-            "suffix": "",
             "value": "foo"
           }
         },
@@ -104,8 +89,7 @@ describe('transform', () => {
           attrs: {
             "priority": DefaultPriorities[Type.Sha],
             "enable": "true",
-            "prefix": "sha-",
-            "suffix": ""
+            "prefix": "sha-"
           }
         }
       ] as Tag[],
@@ -135,8 +119,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Schedule],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "{{date 'YYYYMMDD'}}"
         }
       } as Tag,
@@ -149,8 +131,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Semver],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "{{version}}",
           "value": ""
         }
@@ -164,8 +144,6 @@ describe('parse', () => {
         attrs: {
           "priority": "1",
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "{{version}}",
           "value": ""
         }
@@ -179,8 +157,6 @@ describe('parse', () => {
         attrs: {
           "priority": "1",
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "{{version}}",
           "value": "v1.0.0"
         }
@@ -194,8 +170,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Match],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "v(.*)",
           "group": "1",
           "value": ""
@@ -210,8 +184,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Match],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "^v(\\d.\\d.\\d)$",
           "group": "1",
           "value": ""
@@ -226,8 +198,6 @@ describe('parse', () => {
         attrs: {
           "priority": "700",
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "v(.*)",
           "group": "1",
           "value": ""
@@ -242,8 +212,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Match],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "pattern": "v(.*)",
           "group": "1",
           "value": "v1.2.3"
@@ -263,8 +231,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Edge],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "branch": ""
         }
       } as Tag,
@@ -277,8 +243,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Edge],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "branch": "master"
         }
       } as Tag,
@@ -291,8 +255,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Ref],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "event": RefEvent.Tag
         }
       } as Tag,
@@ -305,8 +267,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Ref],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "event": RefEvent.Branch
         }
       } as Tag,
@@ -320,7 +280,6 @@ describe('parse', () => {
           "priority": DefaultPriorities[Type.Ref],
           "enable": "true",
           "prefix": "pr-",
-          "suffix": "",
           "event": RefEvent.PR
         }
       } as Tag,
@@ -343,8 +302,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Raw],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "value": "acustomtag"
         }
       } as Tag,
@@ -362,8 +319,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Raw],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "value": "acustomtag2"
         }
       } as Tag,
@@ -376,8 +331,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Raw],
           "enable": "true",
-          "prefix": "",
-          "suffix": "",
           "value": "acustomtag4"
         }
       } as Tag,
@@ -390,8 +343,6 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Raw],
           "enable": "false",
-          "prefix": "",
-          "suffix": "",
           "value": "acustomtag5"
         }
       } as Tag,
@@ -404,8 +355,7 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Sha],
           "enable": "true",
-          "prefix": "sha-",
-          "suffix": ""
+          "prefix": "sha-"
         }
       } as Tag,
       false
@@ -417,8 +367,7 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Sha],
           "enable": "true",
-          "prefix": "",
-          "suffix": ""
+          "prefix": ""
         }
       } as Tag,
       false
@@ -430,8 +379,7 @@ describe('parse', () => {
         attrs: {
           "priority": DefaultPriorities[Type.Sha],
           "enable": "false",
-          "prefix": "sha-",
-          "suffix": ""
+          "prefix": "sha-"
         }
       } as Tag,
       false

dist/index.js

@@ -439,11 +439,11 @@ class Meta {
             return version;
         }
         const currentDate = this.date;
-        const vraw = handlebars.compile(tag.attrs['pattern'])({
+        const vraw = this.setFlavor(handlebars.compile(tag.attrs['pattern'])({
             date: function (format) {
                 return moment_1.default(currentDate).utc().format(format);
             }
-        });
+        }), tag);
         if (version.main == undefined) {
             version.main = vraw;
         }
@@ -475,24 +475,18 @@ class Meta {
             includePrerelease: true
         });
         if (semver.prerelease(vraw)) {
-            vraw = handlebars.compile('{{version}}')(sver);
-            if (version.main == undefined) {
-                version.main = vraw;
-            }
-            else if (vraw !== version.main) {
-                version.partial.push(vraw);
-            }
+            vraw = this.setFlavor(handlebars.compile('{{version}}')(sver), tag);
         }
         else {
-            vraw = handlebars.compile(tag.attrs['pattern'])(sver);
+            vraw = this.setFlavor(handlebars.compile(tag.attrs['pattern'])(sver), tag);
+            latest = true;
+        }
         if (version.main == undefined) {
             version.main = vraw;
         }
         else if (vraw !== version.main) {
             version.partial.push(vraw);
         }
-            latest = true;
-        }
         if (version.latest == undefined) {
             version.latest = this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true';
         }
@@ -518,10 +512,16 @@ class Meta {
         else {
             tmatch = vraw.match(tag.attrs['pattern']);
         }
-        if (tmatch) {
-            vraw = tmatch[tag.attrs['group']];
-            latest = true;
+        if (!tmatch) {
+            core.warning(`${tag.attrs['pattern']} does not match ${vraw}.`);
+            return version;
         }
+        if (typeof tmatch[tag.attrs['group']] === 'undefined') {
+            core.warning(`Group ${tag.attrs['group']} does not exist for ${tag.attrs['pattern']} pattern.`);
+            return version;
+        }
+        vraw = this.setFlavor(tmatch[tag.attrs['group']], tag);
+        latest = true;
         if (version.main == undefined) {
             version.main = vraw;
         }
@@ -634,13 +634,13 @@ class Meta {
         return version;
     }
     setFlavor(val, tag) {
-        if (tag.attrs['prefix'].length > 0) {
+        if (tag.attrs.hasOwnProperty('prefix')) {
             val = `${tag.attrs['prefix']}${val}`;
         }
         else if (this.flavor.prefix.length > 0) {
             val = `${this.flavor.prefix}${val}`;
         }
-        if (tag.attrs['suffix'].length > 0) {
+        if (tag.attrs.hasOwnProperty('suffix')) {
             val = `${val}${tag.attrs['suffix']}`;
         }
         else if (this.flavor.suffix.length > 0) {
@@ -912,12 +912,6 @@ function Parse(s) {
     if (!tag.attrs.hasOwnProperty('priority')) {
         tag.attrs['priority'] = exports.DefaultPriorities[tag.type];
     }
-    if (!tag.attrs.hasOwnProperty('prefix')) {
-        tag.attrs['prefix'] = '';
-    }
-    if (!tag.attrs.hasOwnProperty('suffix')) {
-        tag.attrs['suffix'] = '';
-    }
     if (!['true', 'false'].includes(tag.attrs['enable'])) {
         throw new Error(`Invalid value for enable attribute: ${tag.attrs['enable']}`);
     }

src/meta.ts

@@ -99,11 +99,14 @@ export class Meta {
     }
 
     const currentDate = this.date;
-    const vraw = handlebars.compile(tag.attrs['pattern'])({
+    const vraw = this.setFlavor(
+      handlebars.compile(tag.attrs['pattern'])({
         date: function (format) {
           return moment(currentDate).utc().format(format);
         }
-    });
+      }),
+      tag
+    );
 
     if (version.main == undefined) {
       version.main = vraw;
@@ -138,21 +141,16 @@ export class Meta {
       includePrerelease: true
     });
     if (semver.prerelease(vraw)) {
-      vraw = handlebars.compile('{{version}}')(sver);
-      if (version.main == undefined) {
-        version.main = vraw;
-      } else if (vraw !== version.main) {
-        version.partial.push(vraw);
-      }
+      vraw = this.setFlavor(handlebars.compile('{{version}}')(sver), tag);
     } else {
-      vraw = handlebars.compile(tag.attrs['pattern'])(sver);
+      vraw = this.setFlavor(handlebars.compile(tag.attrs['pattern'])(sver), tag);
+      latest = true;
+    }
     if (version.main == undefined) {
       version.main = vraw;
     } else if (vraw !== version.main) {
       version.partial.push(vraw);
     }
-      latest = true;
-    }
     if (version.latest == undefined) {
       version.latest = this.flavor.latest == 'auto' ? latest : this.flavor.latest == 'true';
     }
@@ -180,10 +178,17 @@ export class Meta {
     } else {
       tmatch = vraw.match(tag.attrs['pattern']);
     }
-    if (tmatch) {
-      vraw = tmatch[tag.attrs['group']];
-      latest = true;
+    if (!tmatch) {
+      core.warning(`${tag.attrs['pattern']} does not match ${vraw}.`);
+      return version;
     }
+    if (typeof tmatch[tag.attrs['group']] === 'undefined') {
+      core.warning(`Group ${tag.attrs['group']} does not exist for ${tag.attrs['pattern']} pattern.`);
+      return version;
+    }
+
+    vraw = this.setFlavor(tmatch[tag.attrs['group']], tag);
+    latest = true;
 
     if (version.main == undefined) {
       version.main = vraw;
@@ -310,12 +315,12 @@ export class Meta {
   }
 
   private setFlavor(val: string, tag: tcl.Tag): string {
-    if (tag.attrs['prefix'].length > 0) {
+    if (tag.attrs.hasOwnProperty('prefix')) {
       val = `${tag.attrs['prefix']}${val}`;
     } else if (this.flavor.prefix.length > 0) {
       val = `${this.flavor.prefix}${val}`;
     }
-    if (tag.attrs['suffix'].length > 0) {
+    if (tag.attrs.hasOwnProperty('suffix')) {
       val = `${val}${tag.attrs['suffix']}`;
     } else if (this.flavor.suffix.length > 0) {
       val = `${val}${this.flavor.suffix}`;

src/tag.ts

@@ -185,12 +185,6 @@ export function Parse(s: string): Tag {
   if (!tag.attrs.hasOwnProperty('priority')) {
     tag.attrs['priority'] = DefaultPriorities[tag.type];
   }
-  if (!tag.attrs.hasOwnProperty('prefix')) {
-    tag.attrs['prefix'] = '';
-  }
-  if (!tag.attrs.hasOwnProperty('suffix')) {
-    tag.attrs['suffix'] = '';
-  }
   if (!['true', 'false'].includes(tag.attrs['enable'])) {
     throw new Error(`Invalid value for enable attribute: ${tag.attrs['enable']}`);
   }