From e67e610fda86c44dad9832ad455b987de467ea0a Mon Sep 17 00:00:00 2001
From: Erwin Boskma <erwin@horus.nu>
Date: Fri, 20 Sep 2024 12:28:43 +0200
Subject: [PATCH] emacs: Added a new directive for gptel to summarize git diffs

---
 home-manager/modules/emacs/config.org | 63 ++++++++++++++++++++++-----
 1 file changed, 52 insertions(+), 11 deletions(-)

diff --git a/home-manager/modules/emacs/config.org b/home-manager/modules/emacs/config.org
index ebb5b56..0b6c16f 100644
--- a/home-manager/modules/emacs/config.org
+++ b/home-manager/modules/emacs/config.org
@@ -875,17 +875,58 @@ Set some connection properties
 Let's evaluate this puppy.
 
 #+begin_src emacs-lisp
-  (use-package gptel
-    :general
-    (:prefix my/leader
-             "m" 'gptel-menu
-             "C-m" 'gptel-send)
-    :config
-    (setq gptel-model "mistral-nemo"
-          gptel-backend (gptel-make-ollama "Ollama"
-                          :host "100.119.162.110:11434"
-                          :stream t
-                          :models '("mistral" "mistral-nemo"))))
+      (use-package gptel
+        :general
+        (:prefix my/leader
+                 "m" 'gptel-menu
+                 "C-m" 'gptel-send)
+        :config
+        (setq gptel-model "mistral-nemo"
+              gptel-backend (gptel-make-ollama "Ollama"
+                              :host "100.119.162.110:11434"
+                              :stream t
+                              :models '("mistral" "mistral-nemo")))
+        (add-to-list 'gptel-directives '(commit . "You are an expert programmer summarizing a git diff.
+  Reminders about the git diff format:
+  For every file, there are a few metadata lines, like (for example):
+  ```
+  diff --git a/lib/index.js b/lib/index.js
+  index aadf691..bfef603 100644
+  --- a/lib/index.js
+  +++ b/lib/index.js
+  ```
+  This means that `lib/index.js` was modified in this commit. Note that this is only an example.
+  Then there is a specifier of the lines that were modified.
+  A line starting with `+` means it was added.
+  A line that starting with `-` means that line was deleted.
+  A line that starts with neither `+` nor `-` is code given for context and better understanding.
+  It is not part of the diff.
+  After the git diff of the first file, there will be an empty line, and then the git diff of the next file.
+
+  Do not include the file name as another part of the comment.
+  Do not use the characters `[` or `]` in the summary.
+  Write every summary comment in a new line.
+  Comments should be in a bullet point list, each line starting with a `-`.
+  The summary should not include comments copied from the code.
+  The output should be easily readable. When in doubt, write fewer comments and not more. Do not output comments that
+  simply repeat the contents of the file.
+  Readability is top priority. Write only the most important comments about the diff.
+
+  EXAMPLE SUMMARY COMMENTS:
+  ```
+  - Raise the amount of returned recordings from `10` to `100`
+  - Fix a typo in the github action name
+  - Move the `octokit` initialization to a separate file
+  - Add an OpenAI API for completions
+  - Lower numeric tolerance for test files
+  - Add 2 tests for the inclusive string split function
+  ```
+  Most commits will have less comments than this examples list.
+  The last comment does not include the file names,
+  because there were more than two relevant files in the hypothetical commit.
+  Do not include parts of the example in your summary.
+  It is given only as an example of appropriate comments.
+  ")))
   #+end_src
   
 ** Git