"New object from text" with nonsense text does not fail but creates reference usages instead

[pcdavid]

Steps to reproduce

1. Create a SysML project
2. On the top-level Package, invoke the New object from text action
3. In the modal paste azùmaezmldfr&&²²&az§§§?.
4. Click on Create objects button

Expected result

The operation should probably fail? Or at least show some warning.

Actual result

In this case, two distinct Reference Usage are created, one named az and the other maezmldfr, corresponding to the two sections of the pasted text which contain alphanumeric characters.

Capture.video.du.2026-03-12.08-55-18.mp4

[pcdavid]

This was already the behavior in 2024.9.0, the first version where "New object from text" was available.

[pcdavid]

It's not directly caused by SysON but by the syside parser.
With input.sysml containing azùmaezmldfr&&²²&az§§§?, node syside-cli.js dump input.sysml produces the following JSON:

{
  "$type": "Namespace",
  "children": [
    {
      "$type": "OwningMembership",
      "target": {
        "$type": "ReferenceUsage",
        "declaredName": "az",
        "$cstNode": {
          "text": "az",
          "stack": [
            "UsageElement",
            "UsageMember"
          ]
        },
        "isIndividual": false,
        "isReference": false,
        "isVariation": false,
        "isNonunique": false,
        "isOrdered": false,
        "heritage": [],
        "isSufficient": false,
        "typeRelationships": [],
        "children": [],
        "prefixes": [],
        "$meta": {
          "elementId": 2,
          "qualifiedName": "az"
        }
      },
      "$cstNode": {
        "text": "az",
        "stack": [
          "UsageMember",
          "PackageBodyElement"
        ]
      },
      "isAlias": false,
      "elements": [],
      "$meta": {
        "elementId": 1,
        "qualifiedName": ""
      }
    },
    {
      "$type": "OwningMembership",
      "target": {
        "$type": "ReferenceUsage",
        "declaredName": "maezmldfr",
        "$cstNode": {
          "text": "maezmldfr",
          "stack": [
            "UsageElement",
            "UsageMember"
          ]
        },
        "isIndividual": false,
        "isReference": false,
        "isVariation": false,
        "isNonunique": false,
        "isOrdered": false,
        "heritage": [],
        "isSufficient": false,
        "typeRelationships": [],
        "children": [],
        "prefixes": [],
        "$meta": {
          "elementId": 4,
          "qualifiedName": "maezmldfr"
        }
      },
      "$cstNode": {
        "text": "maezmldfr",
        "stack": [
          "UsageMember",
          "PackageBodyElement"
        ]
      },
      "isAlias": false,
      "elements": [],
      "$meta": {
        "elementId": 3,
        "qualifiedName": ""
      }
    }
  ],
  "$cstNode": {
    "text": "azùmaezmldfr",
    "stack": []
  },
  "prefixes": [],
  "$meta": {
    "elementId": 0,
    "qualifiedName": ""
  }
}