Adds recognition for Skybbles // L5474's contribution

Tweaks shorten logic to only allow >=5 chars & always append any suffix

Author: eamodio

CHANGELOG.md

@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 - Fixes [#606](https://github.com/eamodio/vscode-gitlens/issues/606) - ID for xxx is already registered?!
 - Fixes [#607](https://github.com/eamodio/vscode-gitlens/issues/607) - Open file in Remote Doesn't URL encode
+- Fixes [#608](https://github.com/eamodio/vscode-gitlens/issues/608) - Add an option to change the abbreviated commit SHA length — thanks to [PR #611](https://github.com/eamodio/vscode-gitlens/pull/611) by Skybbles // L5474 ([@Luxray5474](https://github.com/Luxray5474))
 - Fixes [#613](https://github.com/eamodio/vscode-gitlens/issues/613) - Change Copy Remote URL to Clipboard to always copy a permalink (e.g. revision link)
 
 ## [9.3.0] - 2019-01-02

README.md

@@ -841,8 +841,8 @@ See also [View Settings](#view-settings- 'Jump to the View settings')
 ### Advanced Settings [#](#advanced-settings- 'Advanced Settings')
 
 | Name                                            | Description                                                                                                                           |
-| ----------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------|
-| `gitlens.advanced.abbreviatedShaLength`         | Specifies the length of the abbreviated commit SHA (a.k.a. commit ID). Default is 7.
+| ----------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------- |
+| `gitlens.advanced.abbreviatedShaLength`         | Specifies the length of abbreviated commit ids (shas)                                                                                 |
 | `gitlens.advanced.blame.customArguments`        | Specifies additional arguments to pass to the `git blame` command                                                                     |
 | `gitlens.advanced.blame.delayAfterEdit`         | Specifies the time (in milliseconds) to wait before re-blaming an unsaved document after an edit. Use 0 to specify an infinite wait   |
 | `gitlens.advanced.blame.sizeThresholdAfterEdit` | Specifies the maximum document size (in lines) allowed to be re-blamed after an edit while still unsaved. Use 0 to specify no maximum |
@@ -919,6 +919,7 @@ A big thanks to the people that have contributed to this project:
 - Zack Schuster ([@zackschuster](https://github.com/zackschuster)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=zackschuster)
 - sgtwilko ([@sgtwilko](https://github.com/sgtwilko)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=sgtwilko)
 - SpaceEEC ([@SpaceEEC](https://github.com/SpaceEEC)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=SpaceEEC)
+- Skybbles // L5474 ([@Luxray5474](https://github.com/Luxray5474)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=Luxray5474)
 - Alexey Vasyukov ([@notmedia](https://github.com/notmedia)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=notmedia)
 - Zyck ([@qzyse2017](https://github.com/qzyse2017)) — [contributions](https://github.com/eamodio/vscode-gitlens/commits?author=qzyse2017)
 

package.json

@@ -1586,7 +1586,7 @@
                 "gitlens.advanced.abbreviatedShaLength": {
                     "type": "number",
                     "default": "7",
-                    "markdownDescription": "Specifies the length of the abbreviated commit SHA (a.k.a. commit ID). Default is 7.",
+                    "markdownDescription": "Specifies the length of abbreviated commit ids (shas)",
                     "scope": "window"
                 },
                 "gitlens.advanced.blame.customArguments": {

src/git/git.ts

@@ -223,6 +223,7 @@ export class Git {
     static deletedOrMissingSha = '0000000000000000000000000000000000000000-';
     static shaLikeRegex = /(^[0-9a-f]{40}([\^@~:]\S*)?$)|(^[0]{40}(:|-)$)/;
     static shaRegex = /(^[0-9a-f]{40}$)|(^[0]{40}(:|-)$)/;
+    static shaShortenRegex = /^(.*?)([\^@~:].*)?$/;
     static stagedUncommittedRegex = /^[0]{40}([\^@~]\S*)?:$/;
     static stagedUncommittedSha = '0000000000000000000000000000000000000000:';
     static uncommittedRegex = /^[0]{40}(?:[\^@~:]\S*)?:?$/;
@@ -281,13 +282,20 @@ export class Git {
             return strings.uncommitted;
         }
 
-        const index = ref.indexOf('^');
-        if (index > 5) {
-            // Only grab a max of 5 chars for the suffix
-            const suffix = ref.substring(index).substring(0, 5);
-            return `${ref.substring(0, Container.config.advanced.abbreviatedShaLength - suffix.length)}${suffix}`;
+        // Don't allow shas to be shortened to less than 5 characters
+        const len = Math.max(5, Container.config.advanced.abbreviatedShaLength);
+
+        // If we have a suffix, append it
+        const match = Git.shaShortenRegex.exec(ref);
+        if (match != null) {
+            const [, rev, suffix] = match;
+
+            if (suffix != null) {
+                return `${rev.substr(0, len)}${suffix}`;
+            }
         }
-        return ref.substring(0, Container.config.advanced.abbreviatedShaLength);
+
+        return ref.substr(0, len);
     }
 
     static splitPath(fileName: string, repoPath: string | undefined, extract: boolean = true): [string, string] {