[Clippy] Monthly Activity 2026-05

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Activity for May 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention.

• Review PR [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165: feat(excel): add ExcelAssembler for template-based xlsx document assembly — Closes Generate Excel reports based on some/user's template #28 — Review
• Review PR [Clippy] feat: add RegisterCustomHandler extensibility API to DocumentAssembler #163: feat: add RegisterCustomHandler extensibility API to DocumentAssembler — Closes Feature: Support for custom content controls in DocumentAssembler #66 — Review
• Review PR [Clippy] perf/refactor: HashSet in MergeStyleElement + cache sdtPr in MetricsGetter #299: perf/refactor: HashSet in MergeStyleElement + cache sdtPr in MetricsGetter — Review
• Review PR [Clippy] fix: expand symbol font detection and use OrdinalIgnoreCase in WmlToHtmlConverter #300: fix: expand symbol font detection and use OrdinalIgnoreCase in WmlToHtmlConverter — Review
• Review PR (TBD): refactor: replace string.Format(NumberFormatInfo.InvariantInfo) with FormattableString.Invariant in WmlToHtmlConverter — Review
• Check comment DocumentAssembler: Is it possible to to have conditional Table Row? (unrelated) Hidden methods? #67: Clippy explained DocumentAssembler uses XPath 1.0 — View
• Check comment Need some details for using bookmarks using Clippit #103: Clippy explained DocumentAssembler uses content controls, not bookmarks — View
• Check comment Updating references and table of contents using the DocumentAssembler #77: Clippy commented on updating references/TOC via DocumentAssembler — View
• Check comment ManageMediaCopy: improvement ideas #54: Clippy commented on ManageMediaCopy CRC32 improvement idea — View
• Note: SixLabors.ImageSharp.Drawing 3.0.0 now requires a paid commercial license — staying on 2.1.7 is intentional.

Future Work for Clippy

• ExcelAssembler row-repetition (loop over data items): follow-up after [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165 is reviewed
• Issue Duplicates Certain Fonts on Conversion #290 resolved (not a Clippit bug); PR [Clippy] fix: expand symbol font detection and use OrdinalIgnoreCase in WmlToHtmlConverter #300 still pending for code-quality improvements

Run History

2026-05-28 16:57 UTC — Run

• 🔧 Task 5: Created PR — refactor: replace string.Format(NumberFormatInfo.InvariantInfo) with FormattableString.Invariant in WmlToHtmlConverter (39 occurrences, −51 net lines)
• 🔍 Task 3 (fallback Task 2): No open bug issues; no new human activity on any open issues

2026-05-27 16:48 UTC — Run

• 🔧 Task 4: Created PR [Clippy] chore(deps): update Microsoft.NET.Test.Sdk 18.5.1 → 18.6.0 #302 — chore(deps): update Microsoft.NET.Test.Sdk 18.5.1 → 18.6.0 — merged ✅
• 🔧 Task 10: Created PR [Clippy] refactor: use [GeneratedRegex] for VML fix-up patterns in PresentationMLUtil #303 — refactor: use [GeneratedRegex] for VML fix-up patterns in PresentationMLUtil — merged ✅
• 💬 Task 10: Commented on Duplicates Certain Fonts on Conversion #290 — confirmed WmlToHtmlConverter output is correct, duplication is downstream; removed needs investigation label

2026-05-27 UTC — Run

• 🔧 Task 5/3: Created PR [Clippy] fix: expand symbol font detection and use OrdinalIgnoreCase in WmlToHtmlConverter #300 — fix: expand symbol font detection to Wingdings/Webdings + OrdinalIgnoreCase in WmlToHtmlConverter (relates to Duplicates Certain Fonts on Conversion #290)
• 💬 Task 2: Commented on Duplicates Certain Fonts on Conversion #290 — followed up on user's XML examples, linked PR [Clippy] fix: expand symbol font detection and use OrdinalIgnoreCase in WmlToHtmlConverter #300, asked for HTML snippet to confirm duplication type

2026-05-26 UTC — Run

• 🔧 Task 8: Created PR [Clippy] perf/refactor: HashSet in MergeStyleElement + cache sdtPr in MetricsGetter #299 — perf: HashSet in MergeStyleElement to eliminate O(n2) LINQ scan in FormattingAssembler
• 🔧 Task 5: Bundled into same PR — refactor: cache sdtPr element lookup in MetricsGetter (13 repeated scans → 1)
• 💬 Task 3: Commented on Duplicates Certain Fonts on Conversion #290 — analysed w:sym code path, hypothesised root cause of Symbol/Wingdings font duplication

2026-05-25 16:27 UTC — Run

• 🔧 Task 9: Created PR [Clippy] test(pptx): add OpenXml Validate() assertions to PresentationBuilder tests PB001–PB005 #297 — test(pptx): add OpenXml Validate() assertions to PresentationBuilder smoke tests PB001–PB005 — merged ✅
• 🔧 Task 10: Created PR [Clippy] chore: prepare 3.4.5 release #298 — chore: prepare 3.4.5 release — merged ✅
• 🔍 Task 2: No new human activity on any open issues since last run

2026-05-24 15:59 UTC — Run

• 🔧 Task 5: Created PR [Clippy] perf: replace per-call array properties with static readonly HashSet in WmlComparer #296 — perf: replace per-call array properties with static readonly HashSet in WmlComparer — merged ✅
• 🔍 Task 2: No new human activity on any open issues since last run
• 🔍 Task 3: Issue Duplicates Certain Fonts on Conversion #290 (font duplication bug) — investigated code but needs sample DOCX to reproduce; no fix yet

2026-05-23 15:59 UTC — Run

• 🔍 Task 6: Both open Clippy PRs ([Clippy] feat: add RegisterCustomHandler extensibility API to DocumentAssembler #163, [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165) have passing CI and no merge conflicts — no action needed
• 🔍 Task 2: No new human activity on any open issues since last run
• 🔧 Task 8: Created PR [Clippy] perf: replace .Concat(new[] {x}) with .Append(x)/.Prepend(x) #294 — perf: replace .Concat(new[] {x}) with .Append(x)/.Prepend(x) — merged ✅

2026-05-22 16:27 UTC — Run

• 🔧 Task 5 (fallback for Task 4): Created PR [Clippy] feat(html): add CSS font-family fallbacks for common Office fonts #293 — feat(html): add CSS font-family fallbacks for common Office fonts — merged ✅
• 🔍 Task 6: Both open Clippy PRs ([Clippy] feat: add RegisterCustomHandler extensibility API to DocumentAssembler #163, [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165) have clean CI and no merge conflicts — no action needed
• 🔍 Task 2: No new human activity on any open issues since last run

2026-05-21 16:32 UTC — Run

• 🏷️ Task 1: Labelled Duplicates Certain Fonts on Conversion #290 with bug, needs investigation
• 💬 Task 1: Commented on Duplicates Certain Fonts on Conversion #290 asking for sample DOCX to reproduce font duplication
• 🔧 Task 4: Created PR [Clippy] chore(deps): update TUnit 1.45.8 → 1.45.29 #291 — chore(deps): update TUnit 1.45.8 → 1.45.29 — merged ✅
• 🔧 Task 10: Created PR [Clippy] fix(html): quote multi-word font family names in CSS output #292 — fix(html): quote multi-word font family names in CSS output — merged ✅

2026-05-20 16:43 UTC — Run

• 🔧 Task 5: Created PR [Clippy] ci: enable NuGet package caching in GitHub Actions #289 — refactor: replace Hashtable with Dictionary(int,int) in CSS scanner — merged ✅
• 🔧 Task 4: Created PR [Clippy] refactor: replace Hashtable with Dictionary(int,int) in CSS scanner #288 — ci: enable NuGet package caching in GitHub Actions — merged ✅
• 🔍 Task 2: All issues have recent Clippy comments, no new human activity — no new comments

2026-05-20 13:30 UTC — Run

• 🏷️ Labelled GetSlideTitle: NullReferenceException #286 with bug
• 💬 Commented on GetSlideTitle: NullReferenceException #286: diagnosed NullReferenceException root cause in GetSlideTitle
• 🔧 Task 5: Created PR [Clippy] fix: prevent NullReferenceException in GetSlideTitle when cSld/spTree missing #287 — fix: prevent NullReferenceException in GetSlideTitle — merged ✅

2026-05-20 05:15 UTC — Run

• 🏷️ Labelled Page Breaks are not converted #279 with bug
• 💬 Commented on Page Breaks are not converted #279: diagnosed page-break conversion bug
• 🔧 Task 3: Created PR [Clippy] fix: render Word page breaks as CSS page-break div in HTML output #281 — fix: render Word page breaks as CSS page-break div — merged ✅
• 🔧 Task 8: Created PR [Clippy] perf: replace ToUpper()/ToLower()+comparison with OrdinalIgnoreCase #282 — perf: replace ToUpper()/ToLower()+comparison with OrdinalIgnoreCase — merged ✅
• 🔧 Task 9: Created PR [Clippy] refactor: modernize GetListItemText locale files #283 — refactor: modernize GetListItemText locale files — merged ✅
• 🔧 Task 9: Created PR [Clippy] fix: RemoveSoftHyphens and RemoveLastRenderedPageBreak in MarkupSimplifier were silently ignored #284 — fix: RemoveSoftHyphens and RemoveLastRenderedPageBreak silently ignored — merged ✅

Earlier runs (2026-05-01 to 2026-05-19)

• 🔧 PRs [Clippy] chore(deps): update TUnit 1.40.10 → 1.41.0 and Microsoft.NET.Test.Sdk 18.4.0 → 18.5.1 #248–[Clippy] refactor: modernize UnicodeMapper.cs #278 created and merged (TUnit updates, refactors, fixes, tests, release v3.4.3) ✅

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[github-actions]

🤖 Clippy updating the monthly activity summary.

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention.

• Review PR [Clippy] perf: replace ToUpper()/ToLower()+comparison with OrdinalIgnoreCase #282: perf: replace ToUpper()/ToLower()+comparison with OrdinalIgnoreCase — Review
• Review PR [Clippy] fix: render Word page breaks as CSS page-break div in HTML output #281: fix: render Word page breaks as CSS page-break div in HTML output — Addresses Page Breaks are not converted #279 — Review
• Review PR chore(deps): bump github/gh-aw-actions from 0.72.1 to 0.74.6 #280: chore(deps): bump github/gh-aw-actions from 0.72.1 to 0.74.6 — Review
• Review PR [Clippy] chore(deps): update TUnit 1.45.0 → 1.45.8 #277: chore(deps): update TUnit 1.45.0 → 1.45.8 — Review
• Review PR [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165: feat(excel): add ExcelAssembler for template-based xlsx document assembly — Closes Generate Excel reports based on some/user's template #28 — Review
• Review PR [Clippy] feat: add RegisterCustomHandler extensibility API to DocumentAssembler #163: feat: add RegisterCustomHandler extensibility API to DocumentAssembler — Closes Feature: Support for custom content controls in DocumentAssembler #66 — Review
• Review PR (this run): fix: RemoveSoftHyphens and RemoveLastRenderedPageBreak in MarkupSimplifier were silently ignored — bug fix + 6 new tests — pending push
• Review PR (this run): refactor: modernize GetListItemText locale files — file-scoped namespaces + collection expressions — pending push
• Check comment DocumentAssembler: Is it possible to to have conditional Table Row? (unrelated) Hidden methods? #67: Clippy explained DocumentAssembler uses XPath 1.0 — View
• Check comment Need some details for using bookmarks using Clippit #103: Clippy explained DocumentAssembler uses content controls, not bookmarks — View
• Check comment Updating references and table of contents using the DocumentAssembler #77: Clippy commented on updating references/TOC via DocumentAssembler — View
• Check comment ManageMediaCopy: improvement ideas #54: Clippy commented on ManageMediaCopy CRC32 improvement idea — View

Future Work for Clippy

• ExcelAssembler row-repetition (loop over data items): follow-up enhancement after [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165 is reviewed

Run History

2026-05-20 05:20 UTC — Run

• 🏷️ Labelled Page Breaks are not converted #279 with bug, needs investigation
• 🔧 Task 9/bug fix: Created PR — fix: RemoveSoftHyphens and RemoveLastRenderedPageBreak in MarkupSimplifier silently ignored + tests MS010–MS015
• 🔧 Task 5: Created PR — refactor: modernize GetListItemText locale files (file-scoped ns, collection expressions, range indexers)
• 🔍 Task 6: All Clippy PRs ([Clippy] feat: add RegisterCustomHandler extensibility API to DocumentAssembler #163, [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165, [Clippy] chore(deps): update TUnit 1.45.0 → 1.45.8 #277) passing CI, no conflicts — no action needed

2026-05-19 16:43 UTC — Run

• 🔧 Task 4: Created PR [Clippy] chore(deps): update TUnit 1.45.0 → 1.45.8 #277 — chore(deps): update TUnit 1.45.0 → 1.45.8 — 1830 tests pass
• 🔧 Task 10: Created PR [Clippy] refactor: modernize UnicodeMapper.cs #278 — refactor: modernize UnicodeMapper.cs (file-scoped ns, null-conditional, collection expr) — merged ✅
• 🔍 Task 3 → fallback: no bug-labeled issues; help-wanted issues already have open PRs ([Clippy] feat: add RegisterCustomHandler extensibility API to DocumentAssembler #163, [Clippy] feat(excel): add ExcelAssembler for template-based xlsx document assembly #165)

2026-05-18 16:41 UTC — Run

• 🔧 Task 10: Created PR [Clippy] chore(deps): update TUnit 1.44.0 → 1.45.0 #276 — chore(deps): update TUnit 1.44.0 → 1.45.0 — merged ✅
• 🔍 Tasks 2 & 3 → fallback: all issues have recent Clippy comments and no new human activity; no fixable bugs

2026-05-17 15:58 UTC — Run

• 🔧 Task 5: Created PR [Clippy] refactor: modernize Word/Assembler helper files #275 — refactor: modernize Word/Assembler helper files — merged ✅
• 🔍 Tasks 2 & 3: all open issues have recent Clippy comments, no new human activity — no action

2026-05-16 15:58 UTC — Run

• 🔧 Task 8: Created PR [Clippy] perf: replace ContainsKey+indexer double lookups with TryGetValue #274 — perf: replace ContainsKey+indexer double lookups with TryGetValue — merged ✅
• 🔍 Tasks 2 & 3: no action

2026-05-15 16:18 UTC — Run

• 🔧 Task 10: Created PR [Clippy] refactor: modernize MetricsGetter.cs #273 — refactor: modernize MetricsGetter.cs — merged ✅
• 🔍 Tasks 2 & 3: no action

2026-05-14 16:22 UTC — Run

• 🔧 Task 5: Created PR [Clippy] refactor: modernize FieldRetriever.cs #272 — refactor: modernize FieldRetriever.cs — merged ✅

2026-05-13 17:06 UTC — Run

• 🔧 Task 8: Created PR [Clippy] perf: replace .Where(pred).Count() with .Count(pred) and Count()!=1 with Skip(1).Any() #270 — perf: replace .Where(pred).Count() with .Count(pred) — merged ✅
• 🔧 Task 5: Created PR [Clippy] refactor: simplify Select().SelectMany() chains in WmlComparer to SelectMany() #271 — refactor: simplify Select().SelectMany() chains in WmlComparer — merged ✅

2026-05-12 16:27 UTC — Run

• 🔧 Task 4: Created PR [Clippy] chore(deps): update TUnit 1.43.41 → 1.44.0 #267 — chore(deps): update TUnit 1.43.41 → 1.44.0 — merged ✅
• 🔧 Task 5: Created PR [Clippy] refactor: simplify FileUtils.GetFilesRecursive using SearchOption.AllDirectories #268 — refactor: simplify FileUtils.GetFilesRecursive — merged ✅

2026-05-10 20:47 UTC — Run

• 🔧 Task 4: Created PR — chore(deps): update TUnit 1.43.11 → 1.43.41 — merged ✅
• 🔧 Task 5: Created PR — refactor: modernize null checks to ArgumentNullException.ThrowIfNull — merged ✅

2026-05-08 16:05 UTC — Run

• 🔧 Task 10: created PR [Clippy] test: add ReferenceAdder unit tests (RA100–RA140) and fix AddTof w:dirty namespace bug #263 — 14 unit tests for ReferenceAdder — merged ✅

2026-05-07 16:20 UTC — Run

• 🔍 No new actions; noted release v3.4.3 merged ✅

2026-05-06 19:44 UTC — Run

• 🔧 Created release PR: chore: prepare release v3.4.3 — merged ✅

2026-05-06 16:14 UTC — Run

• 🔧 Created PR [Clippy] test: add unit tests for additional PtExtensions methods #259: test: add unit tests for additional PtExtensions methods — merged ✅

2026-05-06 06:05 UTC — Run

• 🔧 Created PR [Clippy] test: add unit tests for PtExtensions (GetXPath, ToBoolean, GroupAdjacent, StrCat) #258: test: add unit tests for PtExtensions — merged ✅

2026-05-05 17:58 UTC — Run

• 🔧 Created PR [Clippy] Fix ArgumentNullException in FluentPresentationBuilder (Closes #255) #256: Fix ArgumentNullException in FluentPresentationBuilder (Closes ArgumentNullException: Value cannot be null. (Parameter 'other') #255) — merged ✅

2026-05-04 13:25 UTC — Run

• 🔧 Created PR [Clippy] chore(deps): update TUnit 1.41.0 → 1.43.11 #254: chore(deps): update TUnit 1.41.0 → 1.43.11 — merged ✅

2026-05-03 19:02 UTC — Run

• 🔧 Created PR [Clippy] fix: rely on SDK 3.x built-in handling for invalid hyperlink URIs #253: fix: rely on SDK 3.x built-in handling for invalid hyperlink URIs (Closes Smarter fix for broken URLs inside packages #47) — merged ✅

2026-05-02 UTC — Run

• 🔧 Created PR [Clippy] perf: replace LINQ char filter with ReplaceLineEndings in FlatOpc.ToPackage #250: perf: replace LINQ char filter with ReplaceLineEndings — merged ✅
• 🔧 Created PR [Clippy] test: add unit tests for ContentDataKey deduplication struct (CDK001-CDK009) #251: test: add unit tests for ContentDataKey deduplication — merged ✅

2026-05-01 13:22 UTC — Run

• 🔧 Created PR [Clippy] chore(deps): update TUnit 1.40.10 → 1.41.0 and Microsoft.NET.Test.Sdk 18.4.0 → 18.5.1 #248: chore(deps): update TUnit 1.40.10 → 1.41.0 — merged ✅
• 📝 Closed April 2026 activity issue and created this May issue

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