[ako]

Syncs ako/mxcli:main into upstream: 27 commits from fork PRs ako#1655–ako#1661. They work through seven clusters on the fork's triage board, one commit per defect. Each has a test that fails with the reported symptom when its fix is reverted. Two of those commits are a gofmt and its revert, which net to nothing.

Fixes #1139, #1250, #1494, #1495, #1514, #1519, #1540, #1543, #1583, #1617, #1618, #1628 and #1631.

describe → exec round trips on pages (#1628, #1631)

On a Studio Pro-authored 11.14 app, describe → check over all 68 pages gave 16 CE1571 reports on pages mx check passes. This brings it to 0.

• A flow argument that is a widget's selection is kept (13 of 16). An example is a grid's control-bar button passing the grid.
  • Before, describe dropped UserList = $grid2, and exec had no way to write it back.
  • It is now stored the way Studio Pro stores it, Variable {Widget}, and ALTER resolves widget names too.
• check judges a list widget's own row click in its row (3 of 16). Row actions on a list view, data grid or gallery need no argument mapping.
• Combo box custom content, which MDL cannot author, is no longer lost:
  • An alter page replace that would carry hidden content onto another entity is refused (alter page replace of a combobox silently keeps the old combobox's custom content, which describe never shows (mx check CE1365) #1631). Its message names the widgets and the remedy.
  • A create or modify that would delete a changed combo box's content is refused. That used to give CE0642.
  • describe names the content in a -- NOT SHOWN: comment.

Pluggable widgets (#1583, #1519, #1494, #1495, #1618)

• A combo box in database mode is written, checked and described (Combo box in database mode: datasource/item selection not persisted, check only warns, and the written widget fails mxbuild CE0463 #1583). It passed check and exec, then gave CE0463 at build. A database-source, multi-selection combo box now rebuilds exactly as Studio Pro stores it.
• Supporting fixes:
  • The editorConfig lifter reads the else-if branches of a chained ternary.
  • A hidden property that only another mode maps is reset.
• Data grid 2 columns (Data grid 2 write defects: empty caption with customContent, dropdownfilter attribute, manual column width #1519):
  • An ALTER-built column keeps its filter's properties.
  • The docs say a column's Size is a relative weight, not pixels.
  • There is a regression case for an empty-caption custom-content column.
• A text-template parameter across an association is written and described (Pluggable widget text-template parameter cannot cross an association: mxcli writes Attribute, never EntityRef/Steps → CE1365 #1494, Pluggable text-template property cannot take an expression: mxcli stores the expression text in AttributeRef.Attribute → "trying to set the 'Attribute' property" #1495). legendParams: ({1} = Repro.Parent_Child/Label) passed check and exec, then failed with CE1365. describe printed it bare, which re-ran as CE1613. The fix covers all three serializer callers: widget-level templates, object-list item templates and Data grid 2 column templates.
• A selection written by its widget key is stored as the selection (Data grid 2 / Gallery: itemSelection: Single written by its widget key is stored as a plain value, so the grid has no selection #1618), for example itemSelection: Single.

Microflows (#1543, #1139, #1617)

• log … with stacktrace sets "Include latest stack trace" (MDL: LOG cannot set 'Include latest stack trace' #1543). Every LOG written through MDL used to store false.
  • New clause: log error node 'X' 'failed: {1}' with ({1} = $latestError/Message) with stacktrace;.
  • $latestError/Stacktrace still parses.
  • The MCP backend sends the flag too.
• A warning when @excluded lands on a decision, loop or event (MDL syntax to disable/enable individual activities in microflows and nanoflows #1139).
• Show page describes and writes "Number of pages to close" (DESCRIBE MICROFLOW omits NumberOfPagesToClose on Show page actions; (NumberOfPagesToClose: 1) passes check/exec but is silently dropped #1617).

Domain model (#1540)

• alter entity add event handler can add a second handler for the same event.
  • A handler is now identified by moment, event and microflow.
  • add … if not exists checks for that exact handler.
  • New: drop event handler … call Mod.Mf names which handler to drop. Without it, a drop that matches several handlers is refused.

Diagnostics (#1250, #1514)

• A view CASE column is typed from its first branch, and numeric ones are widened. MDL031 used to demand String(200) where Mendix derives String(8).
• A routine header without parentheses is refused with one error, at the mistake.

Docs

• The silent-property-drop wiki page is synced, and the changelog has entries for the text-template parameter fixes