From 44cad762d23930e849a24fdf3bdb43506f1943f6 Mon Sep 17 00:00:00 2001
From: Vineet Kumar <git@vineetk.net>
Date: Sat, 23 May 2026 21:33:18 -0400
Subject: deduplicate the hl-* functions

---
 gptel-tools-hl.el | 58 ++++++++++++++++++++++++++-----------------------------
 1 file changed, 27 insertions(+), 31 deletions(-)

diff --git a/gptel-tools-hl.el b/gptel-tools-hl.el
index 45d44fe..fd08260 100644
--- a/gptel-tools-hl.el
+++ b/gptel-tools-hl.el
@@ -57,50 +57,46 @@ Precisely: https://raw.githubusercontent.com/can1357/oh-my-pi/85003ca/packages/c
 (defun hl-hash (line)
   (elt hl-bigrams (% (sxhash line) 647)))
 
-(defun hl-file-read (file)
-  "Return FILE contents in hashline format."
+(defun hl-file-lines (file &optional beg end)
+  "Return FILE contents as a list of strings.
+With optional BEG and END (inclusive, 1-based), return the lines between that range."
   (with-temp-buffer
     (insert-file-contents-literally file)
     (let ((lines (string-lines (buffer-string))))
-      (string-join
-       (cl-mapcar (lambda (line i)
-		    (format "%d%2s|%s" i (hl-hash line) line))
-		  lines
-		  (number-sequence 1 (length lines)))
-       "\n"))))
+      (if beg
+	  (cl-subseq lines (1- beg) end)
+	lines))))
+
+(defun hl-format-lines (lines &optional start include-content?)
+  "Format LINES in hashline format.
+START is 1-based (default 1).
+If INCLUDE-CONTENT is non-nil, append `|LINE' after each hash."
+  (string-join
+   (cl-mapcar (lambda (line i)
+		(if include-content?
+		    (format "%d%2s|%s" i (hl-hash line) line)
+		  (format "%d%2s" i (hl-hash line))))
+	      lines
+	      (number-sequence (or start 1) (+ (or start 1) (1- (length lines)))))
+   "\n"))
+
+(defun hl-file-read (file)
+  "Return FILE contents in hashline format."
+  (hl-format-lines (hl-file-lines file) nil t))
 
 (defun hl-file-read-range (file beg end)
   "Return FILE contents in hashline format from lines BEG to END."
-  (with-temp-buffer
-    (insert-file-contents-literally file)
-    (let ((lines (cl-subseq (string-lines (buffer-string))
-			    (1- beg) end)))
-      (string-join
-       (cl-mapcar (lambda (line i)
-                    (format "%d%2s|%s" i (hl-hash line) line))
-                  lines
-                  (number-sequence beg (+ beg (1- (length lines)))))
-       "\n"))))
+  (hl-format-lines (hl-file-lines file beg end) beg t))
 
 ;; FIXME might be redundant with =hl-file-line-hash= if I'm only
 ;; verifying the hash of the anchors and telling LLM to re-read the
 ;; file when they don't match
 (defun hl-file-read-hashes (file)
   "Return FILE contents in hashline format without content."
-  (with-temp-buffer
-    (insert-file-contents-literally file)
-    (let ((lines (string-lines (buffer-string))))
-      (string-join
-       (cl-mapcar (lambda (line i)
-		    (format "%d%2s" i (hl-hash line)))
-		  lines
-		  (number-sequence 1 (length lines)))
-       "\n"))))
+  (hl-format-lines (hl-file-lines file)))
 
 (defun hl-file-line-hash (file n)
   "Return the hash of the Nth line in FILE."
-  (with-temp-buffer
-    (insert-file-contents-literally file)
-    (let ((lines (string-lines (buffer-string))))
-      (hl-hash (elt lines (1- n))))))
+  (let ((lines (hl-file-lines file)))
+      (hl-hash (elt lines (1- n)))))
 
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