M7: preserve Arabic text order in copy, search and editing (#1369)

* M7: preserve Arabic text order when copying and editing

Record per-line ActualText for shaped added text and preserve its logical order in Edit text. Cover mixed scripts, marks, copy/search, retyping and save/reopen; retain the drawing golden.

Assisted-by: Codex

* Edit text: keep only right-to-left ActualText out of line joining and bidi recovery

Word and Chrome wrap Latin ligatures in /ActualText spans mid-word; splitting
lines at every span broke such words into pieces in Edit Text. Only spans
whose ActualText has strong right-to-left characters keep their own line and
typing order now. Regression: a Latin fi ligature span stays on its line.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

---------

Co-authored-by: Brandon Thomas <[email protected]>
Co-authored-by: Claude Opus 5.5 <[email protected]>

docs/editing-existing-text.md

@@ -27,6 +27,11 @@ same properties; invalid or overlapping ranges fail atomically. Untouched source
 survives. OpenType shaping uses the selected/source face's substitution and positioning
 rules, preserves marks and ligatures, and applies Unicode bidi ordering for a single face.
 Logical text remains available after save/reopen through ToUnicode and ActualText.
+Added Arabic text records ActualText per shaped line for copying and searching in typing order.
+ActualText already supplies typing order, so the editor preserves it without applying
+a second bidi reversal; adjacent visual glyph runs still recover their own reading order.
+Only right-to-left ActualText is kept apart this way: left-to-right spans, such as the Latin
+ligatures (`fi`, `fl`) Word and Chrome wrap in ActualText mid-word, join their line as before.
 
 For headless editing, use `text_font_files` → `text_font_import` → `text_fonts` and pass a
 resource to `text_edit.font_resource`. `text_edit.ranges` holds selected range formatting.

docs/roadmap.md

@@ -1,6 +1,6 @@
 # PdfCraft roadmap: milestones and what's next
 
-> **Last reviewed:** 2026-10-12 · **Last updated:** 2026-10-12 · **Change:** minor (M3: Windows' Animation effects setting is followed, and Preferences has Animation effects; earlier: exclusive image-crop resize follow-up; M2: short same-line redraws split before placement; estimates unchanged) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
+> **Last reviewed:** 2026-10-12 · **Last updated:** 2026-10-12 · **Change:** minor (M7: preserve Arabic ActualText typing order; earlier: M3: Windows' Animation effects setting is followed, and Preferences has Animation effects; earlier: exclusive image-crop resize follow-up; M2: short same-line redraws split before placement; estimates unchanged) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
 > **Last reviewed:** 2026-10-12 · **Last updated:** 2026-10-12 · **Change:** minor (M7: local GoToR links and confined automation candidate; estimates unchanged) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
 > **Last reviewed:** 2026-10-12 · **Last updated:** 2026-10-12 · **Change:** exclusive image-crop resize follow-up; minor (M2: short same-line redraws split before placement; estimates unchanged) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
 > **Last reviewed:** 2026-10-12 · **Last updated:** 2026-10-12 · **Change:** exclusive image-crop resize follow-up; minor (M2: short same-line redraws split before placement; earlier: M10, printing on the web through the browser's print dialog, gap 4, rank 1 65–120 → 50–90 h) · **Target:** Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
@@ -86,7 +86,7 @@ total matches the parity estimate.
 | M4 | Engine, history, save, organize | 100–180 | 95% | 8–15 | Done:<br>- command registry (menus, shortcuts and palette all use it);<br>- undo/redo; incremental, atomic and encrypted saves;<br>- autosave and crash recovery;<br>- organize, combine, extract, split and insert-from-file, with identical fonts and images stored once;<br>- CLI `edit/combine/extract/split`.<br>Done since: Combine files in its own tab (sortable, resizable columns; folders; early warnings; unlocking protected files), bookmark editing, page labels (Number pages), CLI `run`, Set Page Boxes, Crop tool, Duplicate pages, Ctrl+A / Cmd+A to select all pages in Organize, Replace pages, bookmarks from tagged headings. Missing: page transitions, recovery on the web |
 | M5 | Comments (all annotation types, XFDF) | 120–200 | 88% | 12–25 | Done: notes, highlight/underline/strikeout/squiggly, text boxes, ink, lines, arrows, rectangles, ovals, stamps (dynamic, Sign Here, Standard Business), with appearance streams; replies, status, checkmarks, locking, move/resize/restyle/delete; properties dialog; panel filter and sort; hide all; summaries (comments only); XFDF/FDF import and export (partial imports preserve existing reply and review-status links); flatten; Fill & Sign with adjustable text/date size; agent tools.<br>Done since: polygons, connected lines, clouds, callouts, inserted text, colour and checkmark filters; image signature pointer previews, selection handles and live image movement/resizing with proportional corners and independent edge handles. Missing: custom stamps, replace-text proposals, summary layouts with the page |
 | M6 | Forms + JavaScript | 160–320 | 50% | 40–75 | Done: filling all field types with regenerated appearances; Prepare a form (every field type, multi-select/shared properties, move/resize/delete, Field Properties General/Appearance/Position/Options/Format/Validate/Calculate); Acrobat's AF format/keystroke/validate/calculate functions and simplified field notation run natively in Acrobat's event order; tab order; push-button actions; flatten; agent tools. Form data exchange (FDF, XFDF, XML, CSV, text) done.<br>Done since: JavaScript engine (boa, sandboxed) running custom keystroke/validate/calculate/format and button scripts, document JavaScripts, console. Missing: Actions tab, wider object model (annotations, layers, dialogs), XFA |
-| M7 | Content editing (text, images, header/footer, watermark) | 250–500 | 20% | 100–180 | Done: header & footer, watermarks, backgrounds, Bates; added text and images that stay editable (move, resize, format, rotate, flip, crop, replace); links (Link tool, Link Properties, create from URLs, remove all). Done since (#1116): editable text regions grouped across compatible words and subset fonts, one rich-text editor over a background with the source text removed, embedded sfnt faces reused as editor faces, and visible (clipped) bounds for cropped-image selection and resize. Exclusive crops now resize across nested states and content streams, with shared clips fixed.<br>Done since: #594 ordinary paragraph drags preserve overlapping source text; UI/engine regressions, native save/reopen, independent-reader checks and full CI passed in the Linux test environment. #1200 candidate: local GoToR links open in desktop tabs and through root-confined automation; appearance-only edits preserve existing actions. Named destinations remain unapplied and `/NewWindow` is a tab hint. Missing: editing existing text and images in place (the longest pole), image/PDF watermarks |
+| M7 | Content editing (text, images, header/footer, watermark) | 250–500 | 20% | 100–180 | Done: header & footer, watermarks, backgrounds, Bates; added text and images that stay editable (move, resize, format, rotate, flip, crop, replace); links (Link tool, Link Properties, create from URLs, remove all). Done since: Edit text preserves Arabic/Hebrew `/ActualText` typing order, with font-independent regressions. Done since (#1116): editable text regions grouped across compatible words and subset fonts, one rich-text editor over a background with the source text removed, embedded sfnt faces reused as editor faces, and visible (clipped) bounds for cropped-image selection and resize. Exclusive crops now resize across nested states and content streams, with shared clips fixed.<br>Done since: #594 ordinary paragraph drags preserve overlapping source text; UI/engine regressions, native save/reopen, independent-reader checks and full CI passed in the Linux test environment. #1200 candidate: local GoToR links open in desktop tabs and through root-confined automation; appearance-only edits preserve existing actions. Named destinations remain unapplied and `/NewWindow` is a tab hint. Missing: editing existing text and images in place (the longest pole), image/PDF watermarks |
 | M7 | Content editing (text, images, header/footer, watermark) | 250–500 | 20% | 100–180 | Done: header & footer, watermarks, backgrounds, Bates; added text and images that stay editable (move, resize, format, rotate, flip, crop, replace); links (Link tool, Link Properties, create from URLs, remove all). Missing: editing existing text and images in place (the longest pole), watermark print/screen visibility and repeat |
 | M6 | Forms + JavaScript | 160–320 | 50% | 40–75 | Done: filling all field types with regenerated appearances; Prepare a form (every field type, multi-select/shared properties, move/resize/delete, Field Properties General/Appearance/Position/Options/Format/Validate/Calculate); Acrobat's AF format/keystroke/validate/calculate functions and simplified field notation run natively in Acrobat's event order; tab order; push-button actions; flatten; agent tools. Form data exchange (FDF, XFDF, XML, CSV, text) done.<br>Done since: JavaScript engine (boa, sandboxed) running custom keystroke/validate/calculate/format and button scripts, document JavaScripts, console. Missing: Actions tab, wider object model (annotations, layers, dialogs), XFA<br>Done since: Existing simple field-font encodings and Differences are respected when generating appearances; an unencodable value uses a separate Helvetica appearance font without changing the source font. Synthetic reopen regressions cover punctuation, subset fallback and multiline text. Exact font metrics/layout and broader Unicode fallback remain incomplete. |
 | M6 | Forms + JavaScript | 160–320 | 50% | 40–75 | Done: filling all field types with regenerated appearances; Prepare a form (every field type, multi-select/shared properties, move/resize/delete, Field Properties General/Appearance/Position/Options/Format/Validate/Calculate); Acrobat's AF format/keystroke/validate/calculate functions and simplified field notation run natively in Acrobat's event order; tab order; push-button actions; flatten; agent tools. Form data exchange (FDF, XFDF, XML, CSV, text) done.<br>Done since: JavaScript engine (boa, sandboxed) running custom keystroke/validate/calculate/format and button scripts, document JavaScripts, console. Missing: Actions tab, wider object model (annotations, layers, dialogs), XFA<br>Done since: Tab and Shift-Tab wrapping to the same field or another widget of that field refresh the newly opened editor from the accepted value before Save. Synthetic UI regressions cover both directions, same-frame Save, validation refusal and undo/redo. |
@@ -143,6 +143,7 @@ M2 (renderer), M7 (content editing), M10 (OCR and Office), M11 (Preflight and st
 
 | Date | Change | Summary |
 |---|---|---|
+| 2026-10-12 | minor | M7: keep added Arabic copy/search in typing order with per-line ActualText; preserve that order in the editor and keep visual runs separate. Font-independent regressions and tool save/reopen coverage; font fallback and bidi typing remain partial. Estimates unchanged. |
 | 2026-10-12 | minor | M3: case-insensitive Find matches normal, final and capital Greek sigma; exact search, word boundaries, glyph ranges and match limits have regression coverage. The tab-menu test uses Finder on macOS. Estimates unchanged. |
 | 2026-10-12 | minor | M14: Windows low-DPI JetBrains Mono hinting candidate; raster and layout evidence recorded without a Windows runtime claim. Estimates unchanged. |
 | 2026-10-12 | minor | M7/#1200 candidate: bounded local GoToR opening, root-confined automation, and action-preserving appearance edits; named destinations and window behavior remain partial; estimates unchanged. |