Squiggle should only cover the subexpression most closely related to a problem

[jsoref]

Type: Bug

consider this incomplete expression:

something: >-
  ${{ 'alpine' }}
  ${{ (github.event_name == 'push') && (github.ref_name == github.event.repository. && format('{0}/{1}:latest', env.repository, env.image) || '' }}

there is more than one ${{ ... }} and more than one && in the value for something.

The system is nice enough not to stick squiggles under the entirety of the value of something, but it does stick them under the entirety of the second ${{ ... }}.

It would be nicer if it only put them around github.event.repository. && or even repository. && which is the portion of the expression that's closest to the unhappy item.

Unexpected symbol: '&&'
Available expression contexts: github, inputs, vars, needs, strategy, matrix, secrets, steps, job, runner, env

Available expression functions: hashFiles
View Problem

The worst pat of the current behavior is that View Problem points the user to the beginning of the ${{` saying:

Unexpected symbol: '&&'

Which is actually closest to the first && which is not the problematic one.

Extension version: 0.27.1
VS Code version: Code 1.98.0 (Universal) (6609ac3d66f4eade5cf376d1cb76f13985724bcb, 2025-03-04T21:06:18.612Z)
OS version: Darwin arm64 24.3.0
Modes:

System Info

Item	Value
CPUs	Apple M1 Max (10 x 2400)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	6, 7, 7
Memory (System)	64.00GB (0.10GB free)
Process Argv	--crash-reporter-id 1fc67ee2-0174-4598-9f98-4537df0dd32c
Screen Reader	no
VM	0%

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