Issues

• Color contrast ignores alpha: NamedColors.Transparent on white rates 21:1 / AAA, and AdjustForContrast returns a 5%-opaque foreground unchanged

  bug
  ktsu-dev/Semantics#393 · Filter by author matt-edmondson opened on Oct 7, 2026
  1

• PhysicalConstants: SpeedOfLight<long>() and PH<int>.Neutral throw TypeInitializationException, and PlanckConstant<decimal>() quietly returns 0

  bug
  ktsu-dev/Semantics#392 · Filter by author matt-edmondson opened on Oct 7, 2026
  1

• GaugePressure, MolarEnthalpy, PotentialEnergy, Work and Heat refuse negative values: GaugePressure.FromKilopascal(-50) and MolarEnthalpy.FromKilojoulePerMole(-285.8) throw ArgumentException

  bug
  ktsu-dev/Semantics#391 · Filter by author matt-edmondson opened on Oct 7, 2026
  1

• Uuid.Create accepts unbalanced and repeated braces/parentheses: "{uuid)", "((((uuid" and "uuid}}}" all validate

  bug
  ktsu-dev/Semantics#389 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• The / operators on an empty RelativeDirectoryPath produce a rooted path: "" / "x.txt" throws on POSIX and becomes \x.txt on Windows

  bug
  ktsu-dev/Semantics#388 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• RelativeDirectoryPath.Parent ignores .. and .: the "parent" of .. is "" and the parent of a/.. is a, a child of the path itself

  bug
  ktsu-dev/Semantics#387 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• PhysicalConstants: AbsoluteZeroInCelsius returns +273.15, WaterIonProduct returns 14 (pKw), MolarVolumeSTP is in L/mol not SI

  bug
  ktsu-dev/Semantics#386 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• netstandard2.0: relative paths to files gain a trailing separator ("src/file.cs/") and a directory relative to itself is "" so AsAbsolute then throws

  bug
  ktsu-dev/Semantics#385 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• Form names any AABA arrangement ThirtyTwoBarAABA regardless of section length, and NamedForm.VerseChorus can never be produced

  enhancement
  ktsu-dev/Semantics#384 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• Chord.Parse rejects lead-sheet parenthesised spellings (Cm(maj7), C7(9), C7(13), Cm7(11)), so charts using them fail Progression.Parse

  enhancement
  ktsu-dev/Semantics#379 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• Chord.Parse rejects "C+7" and "C+13" and reads "C+9"/"C+11" as a major triad with #9/#11 (regression from #362)

  bug
  ktsu-dev/Semantics#378 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• ChromaticChords never reports ChromaticKind.AugmentedSixth; Italian, French and German sixths fall through to Chromatic

  enhancement
  ktsu-dev/Semantics#377 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• Music has no Clef, KeySignature, Articulation or Dynamic types; dynamics exist only as Velocity constants

  enhancement
  ktsu-dev/Semantics#376 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• Music has no Score/Track/Measure/Voice containers, so notes and rests can't be placed in bars

  enhancement
  ktsu-dev/Semantics#375 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• The root README's Progression.Parse("| Dm7 | G7 | Cmaj7 |") example throws FormatException

  bugdocumentation
  ktsu-dev/Semantics#374 · Filter by author matt-edmondson opened on Oct 6, 2026
  1

• No calendar-position types: add Semantics.Calendar (DateRange, ISO week, Quarter, business-day math) without colliding with the physics Time dimension

  enhancement
  ktsu-dev/Semantics#371 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• No geographic types: add Semantics.Geo (Latitude, Longitude, Coordinate, great-circle distance, initial bearing, GeoHash)

  enhancement
  ktsu-dev/Semantics#370 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• Mode names are written twice in Mode.cs (Shapes keys and 30 static properties); the spec's single-source centralisation never landed

  enhancement
  ktsu-dev/Semantics#369 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• Chord.Parse rejects Cmaj7sus4 / Cmaj9sus4 / Cmaj7sus2, yet Chord.ToString() prints exactly those symbols, so a Progression holding one cannot be re-parsed

  bug
  ktsu-dev/Semantics#368 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• No Money/Currency types: add Semantics.Money (ISO 4217 Currency, Money that refuses cross-currency arithmetic, allocation without lost pennies)

  enhancement
  ktsu-dev/Semantics#367 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• No data size or data rate types: add an Information dimension (bit/byte, KB and KiB) and DataRate = DataSize / Time

  enhancement
  ktsu-dev/Semantics#366 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• Key.ChordFromRomanNumeral reads b/# after an upper-case numeral as the root's accidental ("Vb9" → F#9, "Ib5" → B5)

  bug
  ktsu-dev/Semantics#365 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• Pitch frequency is hardwired to A4 = 440 Hz equal temperament: add Tuning/Temperament to Semantics.Music

  enhancement
  ktsu-dev/Semantics#364 · Filter by author matt-edmondson opened on Oct 5, 2026
  1

• Identifier types expose no parsed values: add Uuid.ToGuid(), JWT header/payload decoding, ISBN-10↔13 conversion, credit-card network detection

  enhancement
  ktsu-dev/Semantics#359 · Filter by author matt-edmondson opened on Sep 30, 2026
  1

• Chord.ToString() writes non-standard symbols: G9 → "G79", Gmaj9 → "Gmaj79", G13 → "G713", G7sus4 → "Gsus47", C6/9 → "C6add9"

  enhancement
  ktsu-dev/Semantics#358 · Filter by author matt-edmondson opened on Sep 30, 2026
  2