From 93ab4dd1e8e625b88f1b54aa21efe03550bb799c Mon Sep 17 00:00:00 2001
From: chrabia <chrabia297@gmail.com>
Date: Mon, 29 May 2023 14:29:58 +0200
Subject: [PATCH] feat: Add new priorities: highest and lowest (#1943)

* feat: added new priorities: highest and lowest

* fixed suggestor unit tests

* review changes: fixed priority numbers, changed highest icon

* fixed highest priority emoji to a star in a box

* fixed edit task modal styling

* fixed highest priority emoji to final one

* added documentation

* review changes: fixed css snippet

* review changes: fixed | symbol disappearing in quick reference docs

* review changes: fixed edit task view
---
 docs/Advanced/Quickadd.md                     |  2 +-
 docs/Advanced/Styling.md                      | 22 +++++++-
 docs/Advanced/Urgency.md                      | 10 +++-
 docs/Getting Started/Auto-Suggest.md          |  2 +
 docs/Getting Started/Priority.md              | 12 +++--
 docs/Queries/Filters.md                       | 12 +++--
 docs/Queries/Grouping.md                      |  2 +
 docs/Quick Reference.md                       |  2 +-
 .../Reference/Task Formats/Dataview Format.md |  2 +
 .../Task Formats/Tasks Emoji Format.md        |  2 +
 ...asks-plugin-priority-as-checkbox-color.css | 11 +++-
 src/Query/Filter/PriorityField.ts             | 15 +++++-
 src/Suggestor/Suggestor.ts                    |  8 +++
 src/Task.ts                                   |  2 +
 src/TaskLineRenderer.ts                       |  4 +-
 src/TaskSerializer/DataviewTaskSerializer.ts  |  8 ++-
 src/TaskSerializer/DefaultTaskSerializer.ts   | 16 +++++-
 src/Urgency.ts                                |  9 ++++
 src/ui/EditTask.svelte                        | 52 +++++++++++++++----
 styles.css                                    | 13 +++--
 tests/Query/Filter/PriorityField.test.ts      | 39 ++++++++++++++
 tests/Query/Urgency.test.ts                   |  3 ++
 ...ymbols_show_all_suggested_text.approved.md |  2 +
 ...ymbols_show_all_suggested_text.approved.md |  2 +
 tests/Suggestor/Suggestor.test.ts             |  2 +-
 .../DataviewTaskSerializer.test.ts            |  6 +--
 .../DefaultTaskSerializer.test.ts             |  6 +--
 tests/TaskSerializer/TaskSerializer.test.ts   |  4 +-
 28 files changed, 226 insertions(+), 44 deletions(-)

diff --git a/docs/Advanced/Quickadd.md b/docs/Advanced/Quickadd.md
index dafa0c55e0..fa01bb5fc0 100644
--- a/docs/Advanced/Quickadd.md
+++ b/docs/Advanced/Quickadd.md
@@ -31,7 +31,7 @@ Task with due date only:
 
 Task with priority and reminder date and due date:
 
-`#task {{VALUE:task name}} ⏰ {{VDATE:reminder date and time,YYYY-MM-DD HH:mm}} {{VALUE:⏫,🔼,🔽, }} 📅 {{VDATE:due date,YYYY-MM-DD}}`
+`#task {{VALUE:task name}} ⏰ {{VDATE:reminder date and time,YYYY-MM-DD HH:mm}} {{VALUE:🔺,⏫,🔼,🔽,⏬️, }} 📅 {{VDATE:due date,YYYY-MM-DD}}`
 
 <video controls width="100%">
     <source src="https://user-images.githubusercontent.com/38974541/143468599-ae598f7d-cc84-4fc9-8293-eae72cf81f8a.mov" />
diff --git a/docs/Advanced/Styling.md b/docs/Advanced/Styling.md
index fd145e1350..113679ec32 100644
--- a/docs/Advanced/Styling.md
+++ b/docs/Advanced/Styling.md
@@ -80,7 +80,7 @@ The generic classes are:
 
 In addition to the generic classes, there are [**data attributes**](https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes) that represent the content of the various task components.
 
-A **priority data attributes** named `data-task-priority` represents the specific priority of a class. It can be `high`, `medium`, `low` or `normal`.
+A **priority data attributes** named `data-task-priority` represents the specific priority of a class. It can be `highest`, `high`, `medium`, `low`, `lowest` or `normal`.
 The `normal` value is special: it is added as a default to a task's upper `task-list-item` even if there is no priority field set for that task.
 
 A **date attribute** represents a due, created, start, scheduled or done date in a format relative to the current date.
@@ -200,6 +200,11 @@ The following rules remove the Tasks priority emoticon and render the tasks' che
 
 <!-- snippet: resources/sample_vaults/Tasks-Demo/.obsidian/snippets/tasks-plugin-priority-as-checkbox-color.css -->
 ```css
+.task-list-item[data-task-priority="highest"] input[type=checkbox] {
+    box-shadow: 0px 0px 2px 2px var(--color-purple);
+    border-color: var(--color-purple);
+}
+
 .task-list-item[data-task-priority="high"] input[type=checkbox] {
     box-shadow: 0px 0px 2px 2px var(--color-red);
     border-color: var(--color-red);
@@ -220,6 +225,11 @@ The following rules remove the Tasks priority emoticon and render the tasks' che
     border-color: var(--color-cyan);
 }
 
+.task-list-item[data-task-priority="lowest"] input[type=checkbox] {
+    box-shadow: 0px 0px 2px 2px var(--color-green);
+    border-color: var(--color-green);
+}
+
 /* This part removes the regular priority emoticon */
 span.task-priority {
     display: none;
@@ -457,6 +467,11 @@ span.tasks-list-text {
 }
 
 /* Represent tasks' priority with colorful round checkboxes instead of the priority emoticons */
+.task-list-item[data-task-priority="highest"] input[type=checkbox] {
+    box-shadow: 0px 0px 2px 2px var(--color-purple);
+    border-color: var(--color-purple);
+}
+
 .task-list-item[data-task-priority="high"] input[type=checkbox] {
     box-shadow: 0px 0px 2px 2px var(--color-red);
     border-color: var(--color-red);
@@ -477,6 +492,11 @@ span.tasks-list-text {
     border-color: var(--color-cyan);
 }
 
+.task-list-item[data-task-priority="lowest"] input[type=checkbox] {
+    box-shadow: 0px 0px 2px 2px var(--color-green);
+    border-color: var(--color-green);
+}
+
 /* This part removes the regular priority emoticon */
 span.task-priority {
     display: none;
diff --git a/docs/Advanced/Urgency.md b/docs/Advanced/Urgency.md
index 218f6ec874..2d8b766dc9 100644
--- a/docs/Advanced/Urgency.md
+++ b/docs/Advanced/Urgency.md
@@ -58,7 +58,11 @@ The scores are as follows:
     <td><code>0.0</code></td>
   </tr>
   <tr>
-    <td rowspan="4">Priority</td>
+    <td rowspan="6">Priority</td>
+    <td>Highest</td>
+    <td><code>9.0</code></td>
+  </tr>
+    <tr>
     <td>High</td>
     <td><code>6.0</code></td>
   </tr>
@@ -73,6 +77,10 @@ The scores are as follows:
   <tr>
     <td>Low</td>
     <td><code>0.0</code></td>
+  </tr>
+    <tr>
+    <td>Lowest</td>
+    <td><code>-0.6</code></td>
   </tr>
   <tr>
     <td rowspan="3">Scheduled</td>
diff --git a/docs/Getting Started/Auto-Suggest.md b/docs/Getting Started/Auto-Suggest.md
index 079e39e46e..1c15cc410b 100644
--- a/docs/Getting Started/Auto-Suggest.md	
+++ b/docs/Getting Started/Auto-Suggest.md	
@@ -174,9 +174,11 @@ Similarly, you can type some fraction of the word `start` (of whatever length is
 | Searchable Text               | Text that is added         |
 | ----------------------------- | -------------------------- |
 | ⏎                             | \<new line>                |
+| 🔺 highest priority           | 🔺                         |
 | ⏫ high priority              | ⏫                         |
 | 🔼 medium priority            | 🔼                         |
 | 🔽 low priority               | 🔽                         |
+| ⏬️ lowest priority            | ⏬️                         |
 | 🔁 recurring (repeat)         | 🔁                         |
 | every                         | 🔁 every                   |
 | every day                     | 🔁 every day               |
diff --git a/docs/Getting Started/Priority.md b/docs/Getting Started/Priority.md
index 9fcff0ae81..71070b84d3 100644
--- a/docs/Getting Started/Priority.md	
+++ b/docs/Getting Started/Priority.md	
@@ -9,10 +9,12 @@ publish: true
 Tasks can have a priority.
 In order to specify the priority of a task, you can append one of the "priority signifiers", shown here in decreasing order of priority:
 
-1. ⏫ for high priority
-2. 🔼 for medium priority
-3. use no signifier to indicate no priority
-4. 🔽 for low priority
+1. 🔺 for highest priority
+2. ⏫ for high priority
+3. 🔼 for medium priority
+4. use no signifier to indicate no priority
+5. 🔽 for low priority
+6. ⏬️ for lowest priority
 
 If a task has no priority at all, it is considered between low and medium priority.
 This means that the priority of 🔽 low tasks is considered lower than the priority of tasks without any specific priority.
@@ -35,7 +37,7 @@ Instead of adding the emoji manually, you can:
 
 The following instructions use the priority signifiers in tasks.
 
-- `priority is (above, below)? (low, none, medium, high)`
+- `priority is (above, below)? (lowest, low, none, medium, high, highest)`
   - [[Filters#Priority|Documentation]]
 - `sort by priority`
   - [[Sorting#Basics|Documentation]]
diff --git a/docs/Queries/Filters.md b/docs/Queries/Filters.md
index e006ded4d0..1cc3027e1a 100644
--- a/docs/Queries/Filters.md
+++ b/docs/Queries/Filters.md
@@ -454,14 +454,16 @@ For example:
 
 ### Priority
 
-- `priority is (above|below|not)? (low|none|medium|high)`
+- `priority is (above|below|not)? (lowest|low|none|medium|high|highest)`
 
 The available priorities are (from high to low):
 
-1. ⏫ for high priority
-2. 🔼 for medium priority
-3. use no signifier to indicate no priority (searched for with 'none')
-4. 🔽 for low priority
+1. 🔺 for highest priority
+2. ⏫ for high priority
+3. 🔼 for medium priority
+4. use no signifier to indicate no priority (searched for with 'none')
+5. 🔽 for low priority
+6. ⏬️ for lowest priority
 
 For more information, see [[Priority|Priorities]].
 
diff --git a/docs/Queries/Grouping.md b/docs/Queries/Grouping.md
index 432db8b510..49c99adb34 100644
--- a/docs/Queries/Grouping.md
+++ b/docs/Queries/Grouping.md
@@ -77,10 +77,12 @@ For more information, including adding your own customised statuses, see [[Statu
 
 1. `priority`
     - The priority of the task, namely one of:
+        - `Priority 0: Highest`
         - `Priority 1: High`
         - `Priority 2: Medium`
         - `Priority 3: None`
         - `Priority 4: Low`
+        - `Priority 5: Lowest`
 1. `urgency` ([[Urgency|urgency]])
     - Currently, the groups run from the lowest urgency to highest.
     - You can reverse this with `group by urgency reverse`.
diff --git a/docs/Quick Reference.md b/docs/Quick Reference.md
index 8001fbc75c..71301cdeb3 100644
--- a/docs/Quick Reference.md	
+++ b/docs/Quick Reference.md	
@@ -25,7 +25,7 @@ This table summarizes the filters and other options available inside a `tasks` b
 | `is recurring`<br>`is not recurring`                                                                                                                                                                                                                                                            | `sort by recurring`                         | `group by recurring`   |                        |
 | `recurrence (includes, does not include) <string>`<br>`recurrence (regex matches, regex does not match) /regex/i`                                                                                                                                                                               |                                             | `group by recurrence`  | `hide recurrence rule` |
 | **[[Filters#Priority\|Priority]]** and **[[Urgency\|urgency]]**                                                                                                                                                                                                                                 |                                             |                        |                        |
-| `priority is (above, below, not)? (low, none, medium, high)`                                                                                                                                                                                                                                    | `sort by priority`                          | `group by priority`    | `hide priority`        |
+| `priority is (above, below, not)? (lowest, low, none, medium, high, highest)`                                                                                                                                                                                                                   | `sort by priority`                          | `group by priority`    | `hide priority`        |
 |                                                                                                                                                                                                                                                                                                 | `sort by urgency`                           | `group by urgency`     | `show urgency`         |
 | **[[Filters#Filters for File Properties\|File properties]]**                                                                                                                                                                                                                                    |                                             |                        |                        |
 | `path (includes, does not include) <path>`<br>`path (regex matches, regex does not match) /regex/i`                                                                                                                                                                                             | `sort by path`                              | `group by path`        |                        |
diff --git a/docs/Reference/Task Formats/Dataview Format.md b/docs/Reference/Task Formats/Dataview Format.md
index ab60a29010..7e394a26a4 100644
--- a/docs/Reference/Task Formats/Dataview Format.md	
+++ b/docs/Reference/Task Formats/Dataview Format.md	
@@ -105,10 +105,12 @@ For more information, see [[Dates]].
 > These names were chosen for use in Tasks, and are not known to dataview. They can of course be searched in dataview.
 
 ```markdown
+- [ ] #task Lowest priority [priority:: lowest]
 - [ ] #task Low priority [priority:: low]
 - [ ] #task Normal priority
 - [ ] #task Medium priority [priority:: medium]
 - [ ] #task High priority [priority:: high]
+- [ ] #task Highest priority [priority:: highest]
 ```
 
 For more information, see [[Priority]].
diff --git a/docs/Reference/Task Formats/Tasks Emoji Format.md b/docs/Reference/Task Formats/Tasks Emoji Format.md
index eee76ca5d0..741c3557c1 100644
--- a/docs/Reference/Task Formats/Tasks Emoji Format.md	
+++ b/docs/Reference/Task Formats/Tasks Emoji Format.md	
@@ -23,10 +23,12 @@ For more information, see [[Dates]].
 ## Tasks Emoji Format for Priorities
 
 ```markdown
+- [ ] #task Lowest priority ⏬️
 - [ ] #task Low priority 🔽
 - [ ] #task Normal priority
 - [ ] #task Medium priority 🔼
 - [ ] #task High priority ⏫
+- [ ] #task Highest priority 🔺
 ```
 
 For more information, see [[Priority]].
diff --git a/resources/sample_vaults/Tasks-Demo/.obsidian/snippets/tasks-plugin-priority-as-checkbox-color.css b/resources/sample_vaults/Tasks-Demo/.obsidian/snippets/tasks-plugin-priority-as-checkbox-color.css
index fa24859743..cdd829d8ba 100644
--- a/resources/sample_vaults/Tasks-Demo/.obsidian/snippets/tasks-plugin-priority-as-checkbox-color.css
+++ b/resources/sample_vaults/Tasks-Demo/.obsidian/snippets/tasks-plugin-priority-as-checkbox-color.css
@@ -1,3 +1,8 @@
+.task-list-item[data-task-priority="highest"] input[type=checkbox] {
+    box-shadow: 0px 0px 2px 2px var(--color-purple);
+    border-color: var(--color-purple);
+}
+
 .task-list-item[data-task-priority="high"] input[type=checkbox] {
     box-shadow: 0px 0px 2px 2px var(--color-red);
     border-color: var(--color-red);
@@ -18,8 +23,12 @@
     border-color: var(--color-cyan);
 }
 
+.task-list-item[data-task-priority="lowest"] input[type=checkbox] {
+    box-shadow: 0px 0px 2px 2px var(--color-green);
+    border-color: var(--color-green);
+}
+
 /* This part removes the regular priority emoticon */
 span.task-priority {
     display: none;
 }
-
diff --git a/src/Query/Filter/PriorityField.ts b/src/Query/Filter/PriorityField.ts
index bf14ea596c..991797c79d 100644
--- a/src/Query/Filter/PriorityField.ts
+++ b/src/Query/Filter/PriorityField.ts
@@ -10,7 +10,8 @@ export class PriorityField extends Field {
     // is to capture them in Nested Capture Groups, like this:
     //  (leading-white-space-in-outer-capture-group(values-to-use-are-in-inner-capture-group))
     // The capture groups are numbered in the order of their opening brackets, from left to right.
-    private static readonly priorityRegexp = /^priority(\s+is)?(\s+(above|below|not))?(\s+(low|none|medium|high))$/;
+    private static readonly priorityRegexp =
+        /^priority(\s+is)?(\s+(above|below|not))?(\s+(lowest|low|none|medium|high|highest))$/;
 
     createFilterOrErrorMessage(line: string): FilterOrErrorMessage {
         const result = new FilterOrErrorMessage(line);
@@ -20,6 +21,9 @@ export class PriorityField extends Field {
             let filterPriority: Priority | null = null;
 
             switch (filterPriorityString) {
+                case 'lowest':
+                    filterPriority = Priority.Lowest;
+                    break;
                 case 'low':
                     filterPriority = Priority.Low;
                     break;
@@ -32,6 +36,9 @@ export class PriorityField extends Field {
                 case 'high':
                     filterPriority = Priority.High;
                     break;
+                case 'highest':
+                    filterPriority = Priority.Highest;
+                    break;
             }
 
             if (filterPriority === null) {
@@ -92,6 +99,9 @@ export class PriorityField extends Field {
                 case Priority.High:
                     priorityName = 'High';
                     break;
+                case Priority.Highest:
+                    priorityName = 'Highest';
+                    break;
                 case Priority.Medium:
                     priorityName = 'Medium';
                     break;
@@ -101,6 +111,9 @@ export class PriorityField extends Field {
                 case Priority.Low:
                     priorityName = 'Low';
                     break;
+                case Priority.Lowest:
+                    priorityName = 'Lowest';
+                    break;
             }
             return [`Priority ${task.priority}: ${priorityName}`];
         };
diff --git a/src/Suggestor/Suggestor.ts b/src/Suggestor/Suggestor.ts
index b30d2e1d74..72c45ced3d 100644
--- a/src/Suggestor/Suggestor.ts
+++ b/src/Suggestor/Suggestor.ts
@@ -83,6 +83,10 @@ function addTaskPropertySuggestions(
             appendText: `${symbols.scheduledDateSymbol} `,
         });
     if (!hasPriority(line)) {
+        genericSuggestions.push({
+            displayText: `${symbols.prioritySymbols.Highest} highest priority`,
+            appendText: `${symbols.prioritySymbols.Highest} `,
+        });
         genericSuggestions.push({
             displayText: `${symbols.prioritySymbols.High} high priority`,
             appendText: `${symbols.prioritySymbols.High} `,
@@ -95,6 +99,10 @@ function addTaskPropertySuggestions(
             displayText: `${symbols.prioritySymbols.Low} low priority`,
             appendText: `${symbols.prioritySymbols.Low} `,
         });
+        genericSuggestions.push({
+            displayText: `${symbols.prioritySymbols.Lowest} lowest priority`,
+            appendText: `${symbols.prioritySymbols.Lowest} `,
+        });
     }
     if (!line.includes(symbols.recurrenceSymbol))
         genericSuggestions.push({
diff --git a/src/Task.ts b/src/Task.ts
index 741fb5d5ff..c70743038e 100644
--- a/src/Task.ts
+++ b/src/Task.ts
@@ -19,10 +19,12 @@ import { compareByDate } from './lib/DateTools';
  * @enum {number}
  */
 export enum Priority {
+    Highest = '0',
     High = '1',
     Medium = '2',
     None = '3',
     Low = '4',
+    Lowest = '5',
 }
 
 export class TaskRegularExpressions {
diff --git a/src/TaskLineRenderer.ts b/src/TaskLineRenderer.ts
index bcf0f31d27..55b20865b4 100644
--- a/src/TaskLineRenderer.ts
+++ b/src/TaskLineRenderer.ts
@@ -260,9 +260,11 @@ function getComponentClassesAndData(component: TaskLayoutComponent, task: Task):
             break;
         case 'priority': {
             let priorityValue = null;
-            if (task.priority === taskModule.Priority.High) priorityValue = 'high';
+            if (task.priority === taskModule.Priority.Highest) priorityValue = 'highest';
+            else if (task.priority === taskModule.Priority.High) priorityValue = 'high';
             else if (task.priority === taskModule.Priority.Medium) priorityValue = 'medium';
             else if (task.priority === taskModule.Priority.Low) priorityValue = 'low';
+            else if (task.priority === taskModule.Priority.Lowest) priorityValue = 'lowest';
             else priorityValue = 'normal';
             dataAttributes['taskPriority'] = priorityValue;
             genericClasses.push(LayoutClasses.priority);
diff --git a/src/TaskSerializer/DataviewTaskSerializer.ts b/src/TaskSerializer/DataviewTaskSerializer.ts
index b7f2519d3a..47058f1d7d 100644
--- a/src/TaskSerializer/DataviewTaskSerializer.ts
+++ b/src/TaskSerializer/DataviewTaskSerializer.ts
@@ -60,9 +60,11 @@ function toInlineFieldRegex(innerFieldRegex: RegExp): RegExp {
  */
 export const DATAVIEW_SYMBOLS = {
     prioritySymbols: {
+        Highest: 'priority:: highest',
         High: 'priority:: high',
         Medium: 'priority:: medium',
         Low: 'priority:: low',
+        Lowest: 'priority:: lowest',
         None: '',
     },
     startDateSymbol: 'start::',
@@ -72,7 +74,7 @@ export const DATAVIEW_SYMBOLS = {
     doneDateSymbol: 'completion::',
     recurrenceSymbol: 'repeat::',
     TaskFormatRegularExpressions: {
-        priorityRegex: toInlineFieldRegex(/priority:: *(high|medium|low)/),
+        priorityRegex: toInlineFieldRegex(/priority:: *(highest|high|medium|low|lowest)/),
         startDateRegex: toInlineFieldRegex(/start:: *(\d{4}-\d{2}-\d{2})/),
         createdDateRegex: toInlineFieldRegex(/created:: *(\d{4}-\d{2}-\d{2})/),
         scheduledDateRegex: toInlineFieldRegex(/scheduled:: *(\d{4}-\d{2}-\d{2})/),
@@ -93,12 +95,16 @@ export class DataviewTaskSerializer extends DefaultTaskSerializer {
 
     protected parsePriority(p: string): Priority {
         switch (p) {
+            case 'highest':
+                return Priority.Highest;
             case 'high':
                 return Priority.High;
             case 'medium':
                 return Priority.Medium;
             case 'low':
                 return Priority.Low;
+            case 'lowest':
+                return Priority.Lowest;
             default:
                 return Priority.None;
         }
diff --git a/src/TaskSerializer/DefaultTaskSerializer.ts b/src/TaskSerializer/DefaultTaskSerializer.ts
index 73ce50fc0a..b0c57d2465 100644
--- a/src/TaskSerializer/DefaultTaskSerializer.ts
+++ b/src/TaskSerializer/DefaultTaskSerializer.ts
@@ -13,9 +13,11 @@ import type { TaskDetails, TaskSerializer } from '.';
  */
 export interface DefaultTaskSerializerSymbols {
     readonly prioritySymbols: {
+        Highest: string;
         High: string;
         Medium: string;
         Low: string;
+        Lowest: string;
         None: string;
     };
     readonly startDateSymbol: string;
@@ -41,9 +43,11 @@ export interface DefaultTaskSerializerSymbols {
  */
 export const DEFAULT_SYMBOLS: DefaultTaskSerializerSymbols = {
     prioritySymbols: {
+        Highest: '🔺',
         High: '⏫',
         Medium: '🔼',
         Low: '🔽',
+        Lowest: '⏬',
         None: '',
     },
     startDateSymbol: '🛫',
@@ -55,7 +59,7 @@ export const DEFAULT_SYMBOLS: DefaultTaskSerializerSymbols = {
     TaskFormatRegularExpressions: {
         // The following regex's end with `$` because they will be matched and
         // removed from the end until none are left.
-        priorityRegex: /([⏫🔼🔽])$/u,
+        priorityRegex: /([🔺⏫🔼🔽⏬])$/u,
         startDateRegex: /🛫 *(\d{4}-\d{2}-\d{2})$/u,
         createdDateRegex: /➕ *(\d{4}-\d{2}-\d{2})$/u,
         scheduledDateRegex: /[⏳⌛] *(\d{4}-\d{2}-\d{2})$/u,
@@ -103,12 +107,16 @@ export class DefaultTaskSerializer implements TaskSerializer {
             case 'priority': {
                 let priority: string = '';
 
-                if (task.priority === Priority.High) {
+                if (task.priority === Priority.Highest) {
+                    priority = ' ' + prioritySymbols.Highest;
+                } else if (task.priority === Priority.High) {
                     priority = ' ' + prioritySymbols.High;
                 } else if (task.priority === Priority.Medium) {
                     priority = ' ' + prioritySymbols.Medium;
                 } else if (task.priority === Priority.Low) {
                     priority = ' ' + prioritySymbols.Low;
+                } else if (task.priority === Priority.Lowest) {
+                    priority = ' ' + prioritySymbols.Lowest;
                 }
                 return priority;
             }
@@ -160,12 +168,16 @@ export class DefaultTaskSerializer implements TaskSerializer {
     protected parsePriority(p: string): Priority {
         const { prioritySymbols } = this.symbols;
         switch (p) {
+            case prioritySymbols.Lowest:
+                return Priority.Lowest;
             case prioritySymbols.Low:
                 return Priority.Low;
             case prioritySymbols.Medium:
                 return Priority.Medium;
             case prioritySymbols.High:
                 return Priority.High;
+            case prioritySymbols.Highest:
+                return Priority.Highest;
             default:
                 return Priority.None;
         }
diff --git a/src/Urgency.ts b/src/Urgency.ts
index 9185d8ce4e..b0a14ba01d 100644
--- a/src/Urgency.ts
+++ b/src/Urgency.ts
@@ -41,6 +41,10 @@ export class Urgency {
         }
 
         switch (task.priority) {
+            // Highest
+            case '0':
+                urgency += 1.5 * Urgency.priorityCoefficient;
+                break;
             // High
             case '1':
                 urgency += 1.0 * Urgency.priorityCoefficient;
@@ -53,6 +57,11 @@ export class Urgency {
             case '3':
                 urgency += 0.325 * Urgency.priorityCoefficient;
                 break;
+            // no modification for "Low" priority
+            // Lowest
+            case '5':
+                urgency -= 0.1 * Urgency.priorityCoefficient;
+                break;
         }
 
         return urgency;
diff --git a/src/ui/EditTask.svelte b/src/ui/EditTask.svelte
index ea48fbc471..aa43fcb849 100644
--- a/src/ui/EditTask.svelte
+++ b/src/ui/EditTask.svelte
@@ -25,7 +25,7 @@
     let editableTask: {
         description: string;
         status: Status;
-        priority: 'none' | 'low' | 'medium' | 'high';
+        priority: 'none' | 'lowest' | 'low' | 'medium' | 'high' | 'highest';
         recurrenceRule: string;
         createdDate: string;
         startDate: string;
@@ -68,23 +68,45 @@
     const priorityOptions: {
             value: typeof editableTask.priority,
             label: string,
-            symbol: string }[] =
+            symbol: string,
+            accessKey: string,
+            accessKeyIndex: number}[] =
         [{
+            value: 'lowest',
+            label: 'Lowest',
+            symbol: prioritySymbols.Lowest,
+            accessKey: 'o',
+            accessKeyIndex: 1
+        }, {
             value: 'low',
             label: 'Low',
-            symbol: prioritySymbols.Low
+            symbol: prioritySymbols.Low,
+            accessKey: 'l',
+            accessKeyIndex: 0
         }, {
             value: 'none',
             label: 'Normal',
-            symbol: prioritySymbols.None
+            symbol: prioritySymbols.None,
+            accessKey: 'n',
+            accessKeyIndex: 0
         }, {
             value: 'medium',
             label: 'Medium',
-            symbol: prioritySymbols.Medium
+            symbol: prioritySymbols.Medium,
+            accessKey: 'm',
+            accessKeyIndex: 0
         }, {
             value: 'high',
             label: 'High',
-            symbol: prioritySymbols.High
+            symbol: prioritySymbols.High,
+            accessKey: 'h',
+            accessKeyIndex: 0
+        }, {
+            value: 'highest',
+            label: 'Highest',
+            symbol: prioritySymbols.Highest,
+            accessKey: 'i',
+            accessKeyIndex: 1
         }]
 
     /*
@@ -216,12 +238,16 @@
             addGlobalFilterOnSave = true;
         }
         let priority: typeof editableTask.priority = 'none';
-        if (task.priority === Priority.Low) {
+        if (task.priority === Priority.Lowest) {
+            priority = 'lowest';
+        } else if (task.priority === Priority.Low) {
             priority = 'low';
         } else if (task.priority === Priority.Medium) {
             priority = 'medium';
         } else if (task.priority === Priority.High) {
             priority = 'high';
+        } else if (task.priority === Priority.Highest) {
+            priority = 'highest';
         }
 
         editableTask = {
@@ -299,6 +325,9 @@
 
         let parsedPriority: Priority;
         switch (editableTask.priority) {
+            case 'lowest':
+                parsedPriority = Priority.Lowest;
+                break;
             case 'low':
                 parsedPriority = Priority.Low;
                 break;
@@ -308,6 +337,9 @@
             case 'high':
                 parsedPriority = Priority.High;
                 break;
+            case 'highest':
+                parsedPriority = Priority.Highest;
+                break;
             default:
                 parsedPriority = Priority.None;
         }
@@ -359,7 +391,7 @@
         <!-- --------------------------------------------------------------------------- -->
         <div class="tasks-modal-section tasks-modal-priorities" on:keyup={_onPriorityKeyup}>
             <label for="priority-{editableTask.priority}">Priority</label>
-            {#each priorityOptions as {value, label, symbol}}
+            {#each priorityOptions as {value, label, symbol, accessKey, accessKeyIndex}}
                 <span>
                     <!-- svelte-ignore a11y-accesskey -->
                     <input
@@ -367,10 +399,10 @@
                         id="priority-{value}"
                         {value}
                         bind:group={editableTask.priority}
-                        accesskey={accesskey(label.charAt(0).toLowerCase())}
+                        accesskey={accesskey(accessKey)}
                     />
                     <label for="priority-{value}">
-                        <span class="accesskey-first">{label}</span>
+                        <span>{label.substring(0,accessKeyIndex)}</span><span class="accesskey">{label.substring(accessKeyIndex,accessKeyIndex+1)}</span><span>{label.substring(accessKeyIndex+1)}</span>
                         {#if symbol && symbol.charCodeAt(0) >= 0x100}
                             <span>{symbol}</span>
                         {/if}
diff --git a/styles.css b/styles.css
index bbd07c6640..aaf7c5bd41 100644
--- a/styles.css
+++ b/styles.css
@@ -134,7 +134,7 @@
 
 .tasks-modal-priorities {
     display: grid;
-    grid-template-columns: 4em 5em 5em 7em 5em;
+    grid-template-columns: 4em 8em 8em 8em;
     grid-column-gap: 1.33em;
 }
 
@@ -146,6 +146,9 @@
 .tasks-modal-priorities label {
     border-radius: var(--input-radius);
     padding: 2px 3px;
+    grid-column: 1;
+    grid-row-start: 1;
+    grid-row-end: 7;
 }
 
 .tasks-modal-priorities input:focus + label {
@@ -153,11 +156,11 @@
     border-color: var(--background-modifier-border-focus);
 }
 
-.tasks-modal-priorities input:checked + label > span:first-child {
+.tasks-modal-priorities input:checked + label > span {
     font-weight: bold;
 }
 
-.tasks-modal-priorities input:not(:checked) + label > span:nth-child(2) {
+.tasks-modal-priorities input:not(:checked) + label > span:nth-child(4) {
     filter: grayscale(100%) opacity(60%);
 }
 
@@ -207,7 +210,7 @@
         margin-bottom: -10px;
     }
     .tasks-modal-priorities > label {
-        grid-row: 1 / span 2;
+        grid-row: 1 / span 7;
     }
     .tasks-modal-dates {
         grid-template-columns: 1fr;
@@ -231,7 +234,7 @@
         grid-template-columns: 4em auto;
     }
     .tasks-modal-priorities > label {
-        grid-row: 1 / span 4;
+        grid-row: 1 / span 7;
     }
 }
 
diff --git a/tests/Query/Filter/PriorityField.test.ts b/tests/Query/Filter/PriorityField.test.ts
index d909fb3991..099478076d 100644
--- a/tests/Query/Filter/PriorityField.test.ts
+++ b/tests/Query/Filter/PriorityField.test.ts
@@ -17,52 +17,83 @@ function testTaskFilterForTaskWithPriority(filter: string, priority: Priority, e
 }
 
 describe('priority is', () => {
+    it('priority is highest', () => {
+        const filter = 'priority is highest';
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, true);
+        testTaskFilterForTaskWithPriority(filter, Priority.High, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Medium, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.None, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Low, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, false);
+    });
+
     it('priority is high', () => {
         const filter = 'priority is high';
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, false);
         testTaskFilterForTaskWithPriority(filter, Priority.High, true);
         testTaskFilterForTaskWithPriority(filter, Priority.Medium, false);
         testTaskFilterForTaskWithPriority(filter, Priority.None, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Low, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, false);
     });
 
     it('priority is medium', () => {
         const filter = 'priority is medium';
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, false);
         testTaskFilterForTaskWithPriority(filter, Priority.High, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Medium, true);
         testTaskFilterForTaskWithPriority(filter, Priority.None, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Low, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, false);
     });
 
     it('priority is none', () => {
         const filter = 'priority is none';
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, false);
         testTaskFilterForTaskWithPriority(filter, Priority.High, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Medium, false);
         testTaskFilterForTaskWithPriority(filter, Priority.None, true);
         testTaskFilterForTaskWithPriority(filter, Priority.Low, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, false);
     });
 
     it('priority is low', () => {
         const filter = 'priority is low';
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, false);
         testTaskFilterForTaskWithPriority(filter, Priority.High, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Medium, false);
         testTaskFilterForTaskWithPriority(filter, Priority.None, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Low, true);
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, false);
+    });
+
+    it('priority is lowest', () => {
+        const filter = 'priority is lowest';
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.High, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Medium, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.None, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Low, false);
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, true);
     });
 });
 
 describe('priority above', () => {
     it('priority above none', () => {
         const filter = 'priority above none';
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Low, false);
         testTaskFilterForTaskWithPriority(filter, Priority.None, false);
         testTaskFilterForTaskWithPriority(filter, Priority.Medium, true);
         testTaskFilterForTaskWithPriority(filter, Priority.High, true);
+        testTaskFilterForTaskWithPriority(filter, Priority.Highest, true);
     });
 });
 
 describe('priority below', () => {
     it('priority below none', () => {
         const filter = 'priority below none';
+        testTaskFilterForTaskWithPriority(filter, Priority.Lowest, true);
         testTaskFilterForTaskWithPriority(filter, Priority.Low, true);
         testTaskFilterForTaskWithPriority(filter, Priority.None, false);
     });
@@ -70,6 +101,8 @@ describe('priority below', () => {
 
 describe('priority is not', () => {
     it.each([
+        ['lowest', Priority.Lowest, false],
+        ['lowest', Priority.Low, true],
         ['low', Priority.Low, false],
         ['low', Priority.None, true],
         ['none', Priority.None, false],
@@ -78,6 +111,8 @@ describe('priority is not', () => {
         ['medium', Priority.Medium, false],
         ['high', Priority.Medium, true],
         ['high', Priority.High, false],
+        ['highest', Priority.Highest, false],
+        ['highest', Priority.High, true],
     ])('priority is not %s (with %s)', (filter: string, input: Priority, expected: boolean) => {
         // TODO Use name of input priority instead of
         testTaskFilterForTaskWithPriority(`priority is not ${filter}`, input, expected);
@@ -142,9 +177,11 @@ describe('sorting by priority', () => {
         // Assert
         // This tests each adjacent pair of priority values, in descending order,
         // to prove that sorting of all combinations will be correct.
+        expectTaskComparesBefore(sorter, with_priority(Priority.Highest), with_priority(Priority.High));
         expectTaskComparesBefore(sorter, with_priority(Priority.High), with_priority(Priority.Medium));
         expectTaskComparesBefore(sorter, with_priority(Priority.Medium), with_priority(Priority.None));
         expectTaskComparesBefore(sorter, with_priority(Priority.None), with_priority(Priority.Low));
+        expectTaskComparesBefore(sorter, with_priority(Priority.Low), with_priority(Priority.Lowest));
 
         expectTaskComparesEqual(sorter, with_priority(Priority.None), with_priority(Priority.None));
     });
@@ -163,10 +200,12 @@ describe('grouping by priority', () => {
     });
 
     it.each([
+        ['- [ ] a 🔺', ['Priority 0: Highest']],
         ['- [ ] a ⏫', ['Priority 1: High']],
         ['- [ ] a 🔼', ['Priority 2: Medium']],
         ['- [ ] a', ['Priority 3: None']],
         ['- [ ] a 🔽', ['Priority 4: Low']],
+        ['- [ ] a ⏬', ['Priority 5: Lowest']],
     ])('task "%s" should have groups: %s', (taskLine: string, groups: string[]) => {
         // Arrange
         const grouper = new PriorityField().createNormalGrouper().grouper;
diff --git a/tests/Query/Urgency.test.ts b/tests/Query/Urgency.test.ts
index fa969239ec..6cbd9256fd 100644
--- a/tests/Query/Urgency.test.ts
+++ b/tests/Query/Urgency.test.ts
@@ -46,10 +46,13 @@ function lowPriorityBuilder() {
 describe('urgency - priority component', () => {
     it('should score correctly for priority', () => {
         const builder = new TaskBuilder();
+        // I don't really know what values should I put here
+        testUrgency(builder.priority(Priority.Highest), 9.0);
         testUrgency(builder.priority(Priority.High), 6.0);
         testUrgency(builder.priority(Priority.Medium), 3.9);
         testUrgency(builder.priority(Priority.None), 1.95);
         testUrgency(builder.priority(Priority.Low), 0.0);
+        testUrgency(builder.priority(Priority.Lowest), -0.6);
     });
 });
 
diff --git a/tests/Suggestor/Suggestor.test.auto-complete_with__dataview__symbols_show_all_suggested_text.approved.md b/tests/Suggestor/Suggestor.test.auto-complete_with__dataview__symbols_show_all_suggested_text.approved.md
index 0eb6427e63..aa50e93278 100644
--- a/tests/Suggestor/Suggestor.test.auto-complete_with__dataview__symbols_show_all_suggested_text.approved.md
+++ b/tests/Suggestor/Suggestor.test.auto-complete_with__dataview__symbols_show_all_suggested_text.approved.md
@@ -4,9 +4,11 @@
 | due:: due date | due::  |
 | start:: start date | start::  |
 | scheduled:: scheduled date | scheduled::  |
+| priority:: highest highest priority | priority:: highest  |
 | priority:: high high priority | priority:: high  |
 | priority:: medium medium priority | priority:: medium  |
 | priority:: low low priority | priority:: low  |
+| priority:: lowest lowest priority | priority:: lowest  |
 | repeat:: recurring (repeat) | repeat::  |
 | created:: created today (2022-07-11) | created:: 2022-07-11  |
 | every | repeat:: every  |
diff --git a/tests/Suggestor/Suggestor.test.auto-complete_with__emoji__symbols_show_all_suggested_text.approved.md b/tests/Suggestor/Suggestor.test.auto-complete_with__emoji__symbols_show_all_suggested_text.approved.md
index aab2245f59..da7a934f48 100644
--- a/tests/Suggestor/Suggestor.test.auto-complete_with__emoji__symbols_show_all_suggested_text.approved.md
+++ b/tests/Suggestor/Suggestor.test.auto-complete_with__emoji__symbols_show_all_suggested_text.approved.md
@@ -4,9 +4,11 @@
 | 📅 due date | 📅  |
 | 🛫 start date | 🛫  |
 | ⏳ scheduled date | ⏳  |
+| 🔺 highest priority | 🔺  |
 | ⏫ high priority | ⏫  |
 | 🔼 medium priority | 🔼  |
 | 🔽 low priority | 🔽  |
+| ⏬ lowest priority | ⏬  |
 | 🔁 recurring (repeat) | 🔁  |
 | ➕ created today (2022-07-11) | ➕ 2022-07-11  |
 | every | 🔁 every  |
diff --git a/tests/Suggestor/Suggestor.test.ts b/tests/Suggestor/Suggestor.test.ts
index a23dd714e2..1ab5df86be 100644
--- a/tests/Suggestor/Suggestor.test.ts
+++ b/tests/Suggestor/Suggestor.test.ts
@@ -48,8 +48,8 @@ describe.each([
             { displayText: `${dueDateSymbol} due date`, appendText: `${dueDateSymbol} ` },
             { displayText: `${startDateSymbol} start date`, appendText: `${startDateSymbol} ` },
             { displayText: `${scheduledDateSymbol} scheduled date`, appendText: `${scheduledDateSymbol} ` },
+            { displayText: `${prioritySymbols.Highest} highest priority`, appendText: `${prioritySymbols.Highest} ` },
             { displayText: `${prioritySymbols.High} high priority`, appendText: `${prioritySymbols.High} ` },
-            { displayText: `${prioritySymbols.Medium} medium priority`, appendText: `${prioritySymbols.Medium} ` },
         ]);
     });
 
diff --git a/tests/TaskSerializer/DataviewTaskSerializer.test.ts b/tests/TaskSerializer/DataviewTaskSerializer.test.ts
index e51e753529..16ecb5269c 100644
--- a/tests/TaskSerializer/DataviewTaskSerializer.test.ts
+++ b/tests/TaskSerializer/DataviewTaskSerializer.test.ts
@@ -32,7 +32,7 @@ describe('DataviewTaskSerializer', () => {
         });
 
         it('should parse a priority', () => {
-            const priorities = ['High', 'Medium', 'Low'] as const;
+            const priorities = ['Highest', 'High', 'Medium', 'Low', 'Lowest'] as const;
             for (const p of priorities) {
                 const prioritySymbol = DATAVIEW_SYMBOLS.prioritySymbols[p];
                 const priority = Priority[p];
@@ -233,8 +233,8 @@ describe('DataviewTaskSerializer', () => {
             expect(serialized).toEqual(`  [${symbol} 2021-06-20]`);
         });
 
-        it('should serialize a High, Medium and Low priority', () => {
-            const priorities = ['High', 'Medium', 'Low'] as const;
+        it('should serialize a Highest, High, Medium, Low and Lowest priority', () => {
+            const priorities = ['Highest', 'High', 'Medium', 'Low', 'Lowest'] as const;
             for (const p of priorities) {
                 const task = new TaskBuilder().priority(Priority[p]).description('').build();
                 const serialized = serialize(task);
diff --git a/tests/TaskSerializer/DefaultTaskSerializer.test.ts b/tests/TaskSerializer/DefaultTaskSerializer.test.ts
index e9c1774b91..ecc202098e 100644
--- a/tests/TaskSerializer/DefaultTaskSerializer.test.ts
+++ b/tests/TaskSerializer/DefaultTaskSerializer.test.ts
@@ -44,7 +44,7 @@ describe.each(symbolMap)("DefaultTaskSerializer with '$taskFormat' symbols", ({
         });
 
         it('should parse a priority', () => {
-            const priorities = ['High', 'None', 'Medium', 'Low'] as const;
+            const priorities = ['Highest', 'High', 'None', 'Medium', 'Low', 'Lowest'] as const;
             for (const p of priorities) {
                 const prioritySymbol = symbols.prioritySymbols[p];
                 const priority = Priority[p];
@@ -86,8 +86,8 @@ describe.each(symbolMap)("DefaultTaskSerializer with '$taskFormat' symbols", ({
             expect(serialized).toEqual(` ${symbol} 2021-06-20`);
         });
 
-        it('should serialize a High, Medium and Low priority', () => {
-            const priorities = ['High', 'Medium', 'Low'] as const;
+        it('should serialize a Highest, High, Medium, Low and Lowest priority', () => {
+            const priorities = ['Highest', 'High', 'Medium', 'Low', 'Lowest'] as const;
             for (const p of priorities) {
                 const task = new TaskBuilder().priority(Priority[p]).description('').build();
                 const serialized = serialize(task);
diff --git a/tests/TaskSerializer/TaskSerializer.test.ts b/tests/TaskSerializer/TaskSerializer.test.ts
index 3798049d4d..1febd320d6 100644
--- a/tests/TaskSerializer/TaskSerializer.test.ts
+++ b/tests/TaskSerializer/TaskSerializer.test.ts
@@ -15,9 +15,9 @@ window.moment = moment;
  This file contains a tested, end-to-end example for implementing and using a
  {@link TaskSerializer}.
  <br>
- This file should also contain any {@link TaskSerializer} tests that should be tested 
+ This file should also contain any {@link TaskSerializer} tests that should be tested
  against all the {@link TaskSerializer}s defined in this repo. Tests that only
- apply to one should be housed in that serializer's specific test file 
+ apply to one should be housed in that serializer's specific test file
 */
 
 describe('TaskSerializer Example', () => {