Support Jinja2-style elif in conditionals#339
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inja already supports chained `else if`, but that syntax is rejected by
Jinja2. Rendering an `else if` template through Jinja2 raises:
jinja2.exceptions.TemplateSyntaxError: expected token 'end of statement block', got 'if'
Jinja2 only accepts `elif`. To improve Jinja2 compatibility, this adds
`elif` as a synonym for `else if`. Both spellings are supported and can be
mixed within the same conditional chain, so existing templates are
unaffected.
The new `elif` branch in the parser mirrors the existing chained `else if`
handling: it marks the false-statement block, creates a nested
IfStatementNode, and parses the condition. Tests cover basic `elif`,
`elif` chains, `elif` followed by `else`, mixed `else if`/`elif` chains,
and the `elif without matching if` error. README and the regenerated
single-header amalgamation are updated to match.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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inja supports chained
else if, but Jinja2 rejects that syntax:Jinja2 only accepts
elif. This addselifas a synonym forelse if, improving Jinja2 compatibility.elifparser branch mirrors the existing chainedelse ifhandlingelif, chains,elif→else, mixedelse if/elif, and theelif without matching iferror