fix(arch, table): what the 1.6.0 README renders showed

- The exterior dimension chains follow the plot scale. DIMSCALE is the
  plan's scale while they are drawn and is put back afterwards; a 1:50
  chain's 2.5 text had been 2.5 drawing units, 0.05 mm on the sheet.
- A headless TABLE merges its title row, as AutoCAD's TABLE does; a long
  title no longer wraps inside the first column over the header row.
- A headless TABLE's cell margin scales with the lettering. A flat 1.0 was
  0.02 mm on a 1:50 schedule; tables at the default 2.5 text are unchanged.
- drawing_new writes the Standard text style in arial.ttf, as AutoCAD
  2026's acadiso.dwt ships it: txt has no superscript two, so 'm²' read
  'm?' live and rendered as a box headlessly. The five bundled templates
  are rebuilt and build_templates --check reproduces them.

Each fix has a test that fails on the old code.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FKFStjEFzpGyLq5bMpWxTd

backends/ezdxf_backend.py

@@ -510,6 +510,17 @@ def _normalise_dimstyle_rounding(doc) -> None:
             continue
 
 
+def _arial_standard_style(doc) -> None:
+    """Standard in Arial, as AutoCAD 2026's acadiso.dwt ships it.
+
+    ezdxf's own default is txt.shx, which has no superscript two: an
+    architectural area label 'm²' read 'm?' when AutoCAD opened the DXF, and
+    rendered as a box headlessly. A new live drawing already starts in Arial,
+    so the two engines now begin from the same Standard.
+    """
+    doc.styles.get("Standard").dxf.font = "arial.ttf"
+
+
 def _apply_iso_dimstyle(doc) -> None:
     """Store ISO defaults on the document's `Standard` dimension style."""
     try:
@@ -2276,6 +2287,7 @@ class EzdxfBackend(AutoCADBackend):
             else:
                 doc = ezdxf.new(dxfversion="R2010")
                 _apply_iso_dimstyle(doc)
+                _arial_standard_style(doc)
             # R32: registering a fresh Drawing is the release — the runaway keeps
             # the object it captured. The quarantined entry is evicted first so
             # it can never be re-activated. Clear before _reset_history_baseline,
@@ -4861,21 +4873,34 @@ class EzdxfBackend(AutoCADBackend):
                 line = msp.add_line((x0, yy), (x0 + layout.width, yy))
                 self._apply_attrs(line, layer, None)
                 children.append(line)
-            for xx in x_positions:
+            last = len(x_positions) - 1
-                line = msp.add_line((xx, y0), (xx, y0 - layout.height))
+            for index, xx in enumerate(x_positions):
+                # a title row is merged, as AutoCAD's TABLE draws it: only the
+                # outer edges cross it
+                inner = 0 < index < last
+                top = y0 - layout.row_height if layout.title_row and inner else y0
+                line = msp.add_line((xx, top), (xx, y0 - layout.height))
                 self._apply_attrs(line, layer, None)
                 children.append(line)
 
-            padding = min(1.0, layout.row_height * 0.15)
+            # the cell margin scales with the lettering: 1.0 at the default 2.5
+            # text, 50 on a 1:50 schedule (a flat 1.0 there is 0.02 mm on the
+            # sheet and the text sat on the cell line)
+            padding = min(0.4 * layout.text_height, 0.15 * layout.row_height)
             for row_index, row in enumerate(layout.cells):
                 for column_index, value in enumerate(row):
                     if not value:
                         continue
+                    span = (
+                        layout.width
+                        if layout.title_row and row_index == 0
+                        else layout.column_widths[column_index]
+                    )
                     text_entity = msp.add_mtext(
                         value,
                         dxfattribs={
                             "char_height": layout.text_height,
-                            "width": max(1.0, layout.column_widths[column_index] - 2 * padding),
+                            "width": max(1.0, span - 2 * padding),
                         },
                     )
                     text_entity.dxf.insert = (

benchmarks/results/published/ab-v1.5.1-vs-v1.6.0-dev.json

@@ -1,302 +0,0 @@
-{
-  "summary": {
-    "baseline_ref": "v1.5.1",
-    "total": 48,
-    "old_pass": 26,
-    "new_pass": 48,
-    "old_pct": 54.2,
-    "new_pct": 100.0,
-    "fixed": 22,
-    "regressed": 0
-  },
-  "rows": [
-    {
-      "check": "core_line_length",
-      "category": "Core",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "core_circle_radius",
-      "category": "Core",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "core_layer_create",
-      "category": "Core",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "core_polyline_closed",
-      "category": "Core",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "core_linear_dim",
-      "category": "Core",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "core_save_dxf_roundtrip",
-      "category": "Core",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "dim_aligned_no_error",
-      "category": "Dimensions",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "dim_angular_no_error",
-      "category": "Dimensions",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "array_polar_360_distinct",
-      "category": "Modify",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "point_intersection_line_line",
-      "category": "Geometry",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "point_tangent_external",
-      "category": "Geometry",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "arc_has_length",
-      "category": "Query",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "arc_select_by_length",
-      "category": "Query",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "ezdxf_bounding_box",
-      "category": "Query",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "mtext_rotation_roundtrip",
-      "category": "Entities",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "screenshot_png",
-      "category": "Render",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "dim_overlap_critique_fires",
-      "category": "Quality gate",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "iso13567_dim_layer",
-      "category": "Quality gate",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "construction_left_iso_caught",
-      "category": "Quality gate",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "gear_no_self_overlap",
-      "category": "Engineering",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "center_linetype_applied",
-      "category": "Entities",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "hatch_area_subtracts_its_island",
-      "category": "Measurement",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "boundary_area_agrees_with_measure",
-      "category": "Measurement",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "two_vertex_circle_has_area",
-      "category": "Measurement",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "diameter_dim_measures_the_diameter",
-      "category": "Dimensions",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "radius_dim_ignores_the_leader_length",
-      "category": "Dimensions",
-      "old": "pass",
-      "new": "pass"
-    },
-    {
-      "check": "pid_block_define_attdef_roundtrip",
-      "category": "P&ID",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "pid_tag_parse_fic",
-      "category": "P&ID",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "pid_graph_edge_count",
-      "category": "P&ID",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "settings_dimstyle_iso25_values",
-      "category": "Settings",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "settings_layer_state_roundtrip",
-      "category": "Settings",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "settings_pdf_mediabox_a3",
-      "category": "Settings",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "mech_part_roundtrip",
-      "category": "Mechanical",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "mech_section_hatch_area",
-      "category": "Mechanical",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "mech_iso286_on_dimension",
-      "category": "Mechanical",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "mech_thread_unrepresented_is_caught",
-      "category": "Mechanical",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "std_part_iso4014_m12",
-      "category": "Mechanical",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "sheet_frame_iso5457_a3",
-      "category": "Sheet",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "bom_balloon_link",
-      "category": "Sheet",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "arch_junction_l_t_x",
-      "category": "Architecture",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "arch_room_area_net",
-      "category": "Architecture",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "arch_opening_cuts_wall",
-      "category": "Architecture",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "arch_rooms_detect_foreign",
-      "category": "Architecture",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "scale_check_detects_schematic",
-      "category": "Understanding",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "pipe_takeoff_rmst_exact",
-      "category": "Understanding",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "cable_takeoff_roundup",
-      "category": "Understanding",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "diff_detects_known_edits",
-      "category": "Understanding",
-      "old": "miss",
-      "new": "pass"
-    },
-    {
-      "check": "topology_known_defects",
-      "category": "Understanding",
-      "old": "miss",
-      "new": "pass"
-    }
-  ]
-}

engineering/annotation.py

@@ -11,6 +11,9 @@ class TableLayout:
     column_widths: list[float]
     row_height: float
     text_height: float
+    #: The first row is a title, merged across every column as AutoCAD's
+    #: TABLE draws it.
+    title_row: bool = False
 
     @property
     def row_count(self) -> int:
@@ -71,7 +74,7 @@ def prepare_table_layout(
         if any(width <= 0 for width in widths):
             raise RuntimeError("entity_create_table: column widths must be positive")
 
-    return TableLayout(data, widths, float(row_height), float(text_height))
+    return TableLayout(data, widths, float(row_height), float(text_height), title_row=bool(title))
 
 
 def validate_mleader(points: list[list[float]], text: str) -> list[tuple[float, float]]:

engineering/arch/draw.py

@@ -375,14 +375,27 @@ async def add_stair(backend, stair: dict, *, lang: str = "en", scale=50) -> dict
 async def draw_chains(
     backend, walls, openings, *, sides=("bottom", "left"), scale=50, first_offset=None, step=None
 ) -> dict:
-    """The exterior chains as real linear DIMENSIONs on the dimension layer."""
+    """The exterior chains as real linear DIMENSIONs on the dimension layer.
+
+    Their text, arrows and gaps follow the plot scale like every other plan
+    annotation: DIMSCALE is ``scale`` while the chains are drawn, so each chain
+    dimension carries it, and the drawing's own DIMSCALE is put back afterwards.
+    Drawn at the style's DIMSCALE 1, a 1:50 chain's 2.5 text was 2.5 drawing
+    units - 0.05 mm on the sheet, which is no text at all.
+    """
     intents = exterior_chains(
         walls, openings, sides=sides, first_offset=first_offset, step=step, scale=scale
     )
     layer = ARCH_ROLE_LAYER["dim"]
     await ensure_arch_layers(backend, [layer])
+    factor = float(scale)
+    previous = await backend.system_get_variable("DIMSCALE")
+    previous = 1.0 if previous is None else float(previous)
     handles: list[str] = []
     rows: list[dict] = []
+    if abs(previous - factor) > 1e-9:
+        await backend.system_set_variable("DIMSCALE", factor)
+    try:
         for intent in intents:
             horizontal = abs(intent.p2[1] - intent.p1[1]) <= abs(intent.p2[0] - intent.p1[0])
             info = await backend.dimension_linear(
@@ -404,13 +417,13 @@ async def draw_chains(
                     "value": math.dist(intent.p1, intent.p2),
                 }
             )
+    finally:
+        if abs(previous - factor) > 1e-9:
+            await backend.system_set_variable("DIMSCALE", previous)
     return {
         "count": len(handles),
         "handles": handles,
         "dimensions": rows,
-        "text_height": (
+        "dimscale": factor,
-            "set by the current dimension style; at 1:{0:g} set DIMSCALE={0:g} with "
-            "dimstyle_modify so the text plots at its paper height".format(float(scale))
-        ),
         "backend": backend.name,
     }

server.py

@@ -10090,8 +10090,9 @@ async def arch_dimension_chains(
     own faces, read back from the plan on the drawing. A row that would only
     restate a farther one is not drawn (ISO 129-1: each measurement once).
     The row spacing defaults (10 mm, then 8 mm on paper) are this server's
-    drafting choices, not standard values. Text height follows the current
+    drafting choices, not standard values. Text, arrows and gaps follow the
-    dimension style: at 1:50 set DIMSCALE=50 with `dimstyle_modify`.
+    plot scale: each chain is drawn at DIMSCALE = `scale` (reported as
+    `dimscale`), and the drawing's own DIMSCALE is put back afterwards.
 
     Refused by name: a drawing with no walls, an unknown or repeated side, a
     non-positive scale, offset or step.

templates/ansi_b_mech.dxf

@@ -489,7 +489,7 @@ $SKPOLY
   9
 $TDCREATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUCREATE
  40
@@ -497,7 +497,7 @@ $TDUCREATE
   9
 $TDUPDATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUUPDATE
  40
@@ -929,11 +929,11 @@ $PSTYLEMODE
   9
 $FINGERPRINTGUID
   2
-{4D9D8563-5BFB-473B-8F1E-D1D0F3D0DAFA}
+{FB139631-7B1A-47EB-AF87-B1687B365FDD}
   9
 $VERSIONGUID
   2
-{8D04634D-773A-4616-8A64-559AF6DC2617}
+{6BE2B494-ED83-4913-8849-67761A7D0FDA}
   9
 $EXTNAMES
 290
@@ -2037,7 +2037,7 @@ Standard
  42
 2.5
   3
-txt
+arial.ttf
   4
 
   0
@@ -3591,7 +3591,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.938108+00:00
+1.4.4 @ 2026-09-24T20:39:34.891596+00:00
   0
 DICTIONARYVAR
   5
@@ -3603,7 +3603,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.946903+00:00
+1.4.4 @ 2026-09-24T20:39:34.900113+00:00
   0
 ENDSEC
   0

templates/ansi_d_arch.dxf

@@ -489,7 +489,7 @@ $SKPOLY
   9
 $TDCREATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUCREATE
  40
@@ -497,7 +497,7 @@ $TDUCREATE
   9
 $TDUPDATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUUPDATE
  40
@@ -929,11 +929,11 @@ $PSTYLEMODE
   9
 $FINGERPRINTGUID
   2
-{EFF5DFA9-C336-4985-B6C0-43235A21CA22}
+{3E50F756-652E-48B0-AE41-6BC3AFA2655A}
   9
 $VERSIONGUID
   2
-{FAECDBB5-1575-421E-8ABB-3C85F40DB897}
+{D664D6B0-1825-4401-AB82-8B8A64CDCC28}
   9
 $EXTNAMES
 290
@@ -2037,7 +2037,7 @@ Standard
  42
 2.5
   3
-txt
+arial.ttf
   4
 
   0
@@ -3591,7 +3591,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.949904+00:00
+1.4.4 @ 2026-09-24T20:39:34.904120+00:00
   0
 DICTIONARYVAR
   5
@@ -3603,7 +3603,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.956981+00:00
+1.4.4 @ 2026-09-24T20:39:34.910627+00:00
   0
 ENDSEC
   0

templates/iso_a1_arch.dxf

@@ -489,7 +489,7 @@ $SKPOLY
   9
 $TDCREATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUCREATE
  40
@@ -497,7 +497,7 @@ $TDUCREATE
   9
 $TDUPDATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUUPDATE
  40
@@ -929,11 +929,11 @@ $PSTYLEMODE
   9
 $FINGERPRINTGUID
   2
-{6F1F6CA9-24DC-4EFD-8119-161D0C1B13F5}
+{D6D14E50-062D-4B6D-94BD-7BBE205F2BDD}
   9
 $VERSIONGUID
   2
-{BB862168-CC9E-4423-9C5D-4DD3A99B384D}
+{D46D597C-787A-4F32-8632-E6227A415146}
   9
 $EXTNAMES
 290
@@ -2037,7 +2037,7 @@ Standard
  42
 2.5
   3
-txt
+arial.ttf
   4
 
   0
@@ -3663,7 +3663,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.902394+00:00
+1.4.4 @ 2026-09-24T20:39:34.835350+00:00
   0
 SCALE
   5
@@ -4007,7 +4007,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.911407+00:00
+1.4.4 @ 2026-09-24T20:39:34.863902+00:00
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 ENDSEC
   0

templates/iso_a3_mech.dxf

@@ -489,7 +489,7 @@ $SKPOLY
   9
 $TDCREATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUCREATE
  40
@@ -497,7 +497,7 @@ $TDUCREATE
   9
 $TDUPDATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUUPDATE
  40
@@ -929,11 +929,11 @@ $PSTYLEMODE
   9
 $FINGERPRINTGUID
   2
-{522C5F29-75D3-427F-A718-E45B971550C2}
+{68192C9F-2E1B-4491-B3B5-24934A927E62}
   9
 $VERSIONGUID
   2
-{CF5A954B-3734-4AD2-B15E-F6411516FB5E}
+{B09ECF76-6F17-4166-8AA8-1673B93563F5}
   9
 $EXTNAMES
 290
@@ -2037,7 +2037,7 @@ Standard
  42
 2.5
   3
-txt
+arial.ttf
   4
 
   0
@@ -4541,7 +4541,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.742891+00:00
+1.4.4 @ 2026-09-24T20:39:34.680466+00:00
   0
 DICTIONARYVAR
   5
@@ -4553,7 +4553,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.898227+00:00
+1.4.4 @ 2026-09-24T20:39:34.829339+00:00
   0
 ENDSEC
   0

templates/iso_a3_pid.dxf

@@ -489,7 +489,7 @@ $SKPOLY
   9
 $TDCREATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUCREATE
  40
@@ -497,7 +497,7 @@ $TDUCREATE
   9
 $TDUPDATE
  40
-2461306.528125
+2461308.9858101853
   9
 $TDUUPDATE
  40
@@ -929,11 +929,11 @@ $PSTYLEMODE
   9
 $FINGERPRINTGUID
   2
-{629792F3-C911-49E6-B9A0-300331D1DFBB}
+{F0BBB091-B6E3-4896-AD21-EB815B809E89}
   9
 $VERSIONGUID
   2
-{ACABCD08-CEC8-4984-94D2-99D2ED56844B}
+{CA4E384E-EE93-48E0-A671-949D2BCF158F}
   9
 $EXTNAMES
 290
@@ -2205,7 +2205,7 @@ Standard
  42
 2.5
   3
-txt
+arial.ttf
   4
 
   0
@@ -4709,7 +4709,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.915301+00:00
+1.4.4 @ 2026-09-24T20:39:34.868575+00:00
   0
 DICTIONARYVAR
   5
@@ -4721,7 +4721,7 @@ DictionaryVariables
 280
 0
   1
-1.4.4 @ 2026-09-22T09:40:30.933095+00:00
+1.4.4 @ 2026-09-24T20:39:34.887094+00:00
   0
 ENDSEC
   0

tests/test_arch_draw.py

@@ -197,6 +197,27 @@ async def test_draw_chains_puts_real_dimensions_on_the_dimension_layer(backend):
     }
 
 
+async def test_draw_chains_text_follows_the_plot_scale_and_dimscale_is_put_back(backend):
+    # At the style's DIMSCALE 1 a 1:50 chain's 2.5 text was 2.5 drawing units -
+    # 0.05 mm on the sheet - and the README plan render showed empty boxes where
+    # the numbers belong. The chain carries the scale; the drawing keeps its own.
+    shell = Wall(
+        id="shell",
+        axis=((0.0, 0.0), (8200.0, 0.0), (8200.0, 6200.0), (0.0, 6200.0)),
+        thickness=200.0,
+        closed=True,
+    )
+    before = await backend.system_get_variable("DIMSCALE")
+    result = await draw_chains(backend, [shell], [], sides=("bottom",), scale=50)
+    assert result["dimscale"] == 50.0
+    heights = set()
+    for handle in result["handles"]:
+        block = backend._doc.entitydb[handle].get_geometry_block()
+        heights |= {round(e.dxf.char_height, 6) for e in block if e.dxftype() == "MTEXT"}
+    assert heights == {125.0}  # 2.5 mm on paper x 50
+    assert await backend.system_get_variable("DIMSCALE") == before
+
+
 async def test_assign_tags_numbers_each_kind_in_the_chosen_language():
     ops = [
         Opening(id="1", wall="a", kind="door", offset=0.0, width=900.0),

tests/test_styles.py

@@ -46,6 +46,14 @@ def _rendered(backend, handle):
 # ── headless engine ─────────────────────────────────────────────────────────
 
 
+async def test_a_new_drawing_writes_standard_in_arial_like_acadiso(backend):
+    # AutoCAD 2026's acadiso.dwt ships Standard as Arial. ezdxf's own default is
+    # txt.shx, which has no superscript two: an architectural area label 'm²'
+    # read 'm?' in AutoCAD and rendered as a box headlessly.
+    rows = {row["name"]: row["font"] for row in await backend.textstyle_list()}
+    assert rows["Standard"] == "arial.ttf"
+
+
 async def test_dimstyle_list_reports_standard_current_with_the_seventeen_values(backend):
     rows = await backend.dimstyle_list()
     assert [r["name"] for r in rows] == ["Standard"]

tests/test_table_leader.py

@@ -28,6 +28,49 @@ async def test_ezdxf_table_returns_composite_contract(backend):
     assert result.properties["bounds"] == {"min": [10.0, 72.0], "max": [30.0, 100.0]}
 
 
+async def test_ezdxf_table_title_row_is_merged_across_the_table(backend):
+    # AutoCAD's TABLE merges its title row. Drawn as one column's cell, a title
+    # such as 'DOOR SCHEDULE' wrapped inside the first column and ran over the
+    # header row below it. The title spans the table, and only the table's outer
+    # edges cross its row.
+    result = await backend.entity_create_table(
+        0,
+        100,
+        rows=[["D1", "900"]],
+        headers=["TAG", "WIDTH"],
+        column_widths=[20, 30],
+        row_height=10,
+        text_height=2.5,
+        title="DOOR SCHEDULE",
+    )
+    children = [backend._doc.entitydb[h] for h in result.properties["child_handles"]]
+    (title,) = [e for e in children if e.dxftype() == "MTEXT" and e.text == "DOOR SCHEDULE"]
+    assert title.dxf.width == pytest.approx(50.0 - 2 * 1.0)  # padding min(1.0, 10 x 0.15)
+    verticals = [e for e in children if e.dxftype() == "LINE" and e.dxf.start.x == e.dxf.end.x]
+    inner = [v for v in verticals if 0.0 < v.dxf.start.x < 50.0]
+    assert inner and all(max(v.dxf.start.y, v.dxf.end.y) == pytest.approx(90.0) for v in inner)
+    outer = [v for v in verticals if v.dxf.start.x in (0.0, 50.0)]
+    assert len(outer) == 2 and all(max(v.dxf.start.y, v.dxf.end.y) == 100.0 for v in outer)
+
+
+async def test_ezdxf_table_cell_margin_scales_with_the_lettering(backend):
+    # A 1:50 schedule letters at 125 in rows of 350. A flat 1.0 margin is 0.02 mm
+    # on that sheet: the text sat on the cell line, and 'LEFT' read as 'FT'.
+    result = await backend.entity_create_table(
+        0,
+        0,
+        rows=[["D1", "LEFT"]],
+        column_widths=[750, 1000],
+        row_height=350,
+        text_height=125,
+    )
+    children = [backend._doc.entitydb[h] for h in result.properties["child_handles"]]
+    (left,) = [e for e in children if e.dxftype() == "MTEXT" and e.text == "LEFT"]
+    assert left.dxf.insert.x == pytest.approx(750 + 50.0)  # 0.4 x 125
+    assert left.dxf.insert.y == pytest.approx(-50.0)
+    assert left.dxf.width == pytest.approx(1000 - 2 * 50.0)
+
+
 async def test_ezdxf_table_survives_save_and_reopen(backend, tmp_path):
     result = await backend.entity_create_table(0, 30, rows=[["A", "1"]], headers=["Name", "Qty"])
     path = tmp_path / "table.dxf"