Python: CodeTokenizer splits quoted named-arg values on spaces (NamedArgBlockSyntaxError)

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
78/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
python
Domain
tooling

Research direction

Start with CodeTokenizer in semantic_kernel/template_engine/code_tokenizer and run the provided tokenize reproduction for both single- and double-quoted values. Done means each quoted named-argument value containing spaces remains one token and the example templates tokenize without NamedArgBlockSyntaxError.

Written by the indexing model from the issue text.

Description

python triage
Description

CodeTokenizer splits named-argument quoted values at spaces, so a template like:

{{func key='hello world'}}

fails with NamedArgBlockSyntaxError: A NamedArgBlock starts with a name... — the token for the argument is cut to key='hello and parsing breaks. Any quoted named-arg value containing a space breaks the whole template.

Reproduction
from semantic_kernel.template_engine.code_tokenizer import CodeTokenizer
CodeTokenizer().tokenize("{{func key='hello world'}}")
# NamedArgBlockSyntaxError

Same with double quotes.

Expected behavior

quoted values are single tokens, spaces included, matching how the value grammar is documented (ValBlock is text surrounded by quotes).

Environment

semantic-kernel python main, Python 3.12

Dominant language
C#
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