v0.8.0: use cl-tty.box:char-width and cl-tty.markdown:search-highlight

Removed local definitions of char-width (dead code) and search-highlight
(now uses cl-tty.markdown:search-highlight). Moved char-width tests to
cl-tty's box-tests.

org/channel-tui-view.org

@@ -17,7 +17,7 @@
    right-aligned lowercase hint at h-2.
 4. (redraw fb w h): wraps view-status/chat/input in begin-sync/end-sync,
    dispatches per dirty flags, fills global :bg first.
-5. (char-width ch): returns terminal column width of character CH.
+5. ~cl-tty.box:char-width~ for terminal column width.
    ASCII < 128 = 1. CJK, fullwidth, emoji = 2. Combining marks = 0.
    Tab = 8. Used by word-wrap for accurate line counting (v0.7.0).
 6. (sidebar-visible-p w): returns T if sidebar should show given width W
@@ -82,22 +82,9 @@ Returns a list of strings, one per line."
     (- h 4 panel-rows -1)))
 
 
-;; v0.7.2: search-highlight — wrap matching text in **bold** for markdown
+;; Build simple tab-like blocks
-(defun search-highlight (content query)
+#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-view.lisp
-  "Wrap occurrences of QUERY in CONTENT with **bold** markers."
+(in-package :passepartout.channel-tui)
-  (let ((lower-content (string-downcase content))
-        (lower-query (string-downcase query))
-        (result "") (pos 0))
-    (when (and query (> (length query) 0))
-      (loop
-        (let ((found (search lower-query lower-content :start2 pos)))
-          (unless found (return))
-          (setf result (concatenate 'string result
-                                   (subseq content pos found)
-                                   "**" (subseq content found (+ found (length query))) "**"))
-          (setf pos (+ found (length query)))))
-      (setf result (concatenate 'string result (subseq content pos)))
-      (if (string= result "") content result))))
 
 (defun view-chat (fb w h)
   (let* ((w (or (and (numberp w) (> w 0) w) 80))
@@ -122,7 +109,7 @@ Returns a list of strings, one per line."
       (dotimes (i total)
         (let* ((msg (aref msgs i)) (role (getf msg :role))
                (content (getf msg :content))
-               (cs (if is-search (search-highlight content (st :search-query)) content))
+               (cs (if is-search (cl-tty.markdown:search-highlight content (st :search-query)) content))
                (pairs nil)
                (think-bg (theme-color :thinking-bg))
                (sym-bdr (theme-color :symbolic-border))
@@ -380,33 +367,7 @@ Returns a list of strings, one per line."
 #+END_SRC
 
 * Implementation — v0.7.0 additions
-#+BEGIN_SRC lisp :tangle /home/user/.local/share/passepartout/lisp/channel-tui-view.lisp
+ * v0.7.1 — Markdown Rendering
-(in-package :passepartout)
-
-(defun char-width (ch)
-  "Returns the terminal column width of character CH.
-ASCII < 128 = 1. CJK, fullwidth, emoji = 2. Combining marks = 0. Tab = 8."
-  (let ((code (char-code ch)))
-    (cond
-      ((= code 9) 8)
-      ((< code 32) 0)
-      ((<= code 127) 1)
-      ((<= #x4E00 code #x9FFF) 2)
-      ((<= #x3400 code #x4DBF) 2)
-      ((<= #x3040 code #x309F) 2)
-      ((<= #x30A0 code #x30FF) 2)
-      ((<= #xAC00 code #xD7AF) 2)
-      ((<= #xFF01 code #xFF60) 2)
-      ((<= #xFFE0 code #xFFE6) 2)
-      ((<= #x1F300 code #x1F9FF) 2)
-      ((<= #x2600 code #x27BF) 2)
-      ((<= #x0300 code #x036F) 0)
-      ((<= #x20D0 code #x20FF) 0)
-      ((<= #xFE00 code #xFE0F) 0)
-      (t 1))))
-#+END_SRC
-
-* v0.7.1 — Markdown Rendering
 
 ~render-styled~ accepts a ~(text . plist)~ segment list from the span
 parser and emits ~draw-text~ calls. The ~w~ parameter is ignored (layout
@@ -585,24 +546,6 @@ dead code.
 (def-suite tui-view-suite :description "TUI view rendering helpers")
 (in-suite tui-view-suite)
 
-(test test-char-width-ascii
-  "Contract 5: ASCII characters (< 128) have width 1."
-  (is (= 1 (passepartout::char-width #\a)))
-  (is (= 1 (passepartout::char-width #\Space)))
-  (is (= 1 (passepartout::char-width #\@))))
-
-(test test-char-width-tab
-  "Contract 5: tab character has width 8."
-  (is (= 8 (passepartout::char-width #\Tab))))
-
-(test test-char-width-cjk
-  "Contract 5: CJK characters have width 2."
-  (is (= 2 (passepartout::char-width #\日))))
-
-(test test-char-width-null
-  "Contract 5: null has width 0."
-  (is (= 0 (passepartout::char-width #\Nul))))
-
 (test test-markdown-bold
   "Contract 7: parse-markdown-spans detects **bold**."
   (let ((segments (passepartout::parse-markdown-spans "hello **world**!")))