Vscode: [ejs] <%= %> in .ejs file marked as wrong but correct

[omginput]

Issue Type: Bug

Code marks <%= %> and <% %> expressions in .ejs files as wrong and marks them red with the hint "[js] Expression expected". But this should be allowed in ejs files. Brackets for example has no problems with it.

VS Code version: Code 1.23.1 (d0182c3417d225529c6d5ad24b7572815d0de9ac, 2018-05-10T17:11:17.614Z)
OS version: Windows_NT x64 10.0.17134

System Info

|Item|Value|
|---|---|
|CPUs|Intel(R) Core(TM) i5-3320M CPU @ 2.60GHz (4 x 2594)|
|GPU Status|2d_canvas: enabled
flash_3d: enabled
flash_stage3d: enabled
flash_stage3d_baseline: enabled
gpu_compositing: enabled
multiple_raster_threads: enabled_on
native_gpu_memory_buffers: disabled_software
rasterization: disabled_software
video_decode: enabled
video_encode: enabled
vpx_decode: unavailable_software
webgl: enabled
webgl2: enabled|
|Memory (System)|7.82GB (4.14GB free)|
|Process Argv|C:Program Files\Microsoft VS Code\Code.exe|
|Screen Reader|no|
|VM|0%|

Extensions (2)

Extension|Author (truncated)|Version
---|---|---
vsc-material-theme|Equ|2.1.0
vscode-language-pack-de|MS-|1.23.3

[aeschli]

We open ejs files with the HTML language mode without understanding the ejs syntax.
Ideally, there will be a real EJS exension that can properly handle the EJS syntax. From our side we have no support planned.

As a workaround, you can disable the scripts validation for HTML:
"html.validate.scripts": false

[omginput]

Ok, thank you. Would be nice if there was support in future.

[miles-blaq]

really great help, thanks

[aeschli]

Proper EJS support would ideally come from an extension. The HTML language support does't know of the many templating languages, and it really shouldn't.
We have #49210 to come up with a simpler way of using the HTML mode for templating languages.

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