30 lines
778 B
Ruby
30 lines
778 B
Ruby
# This file is licensed under the MIT License (MIT) available on
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# http://opensource.org/licenses/MIT.
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## liquid-warn.rb prints a warning to stdout (not stderr). This can allow
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## someone manually building the site (or reviewing logs) to detect a problem
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## Example:
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## {% if some_variable_is_set %}
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## ...content...
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## {% else %}
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## {% warn "Optional message" %}
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## {% endif %}
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module Jekyll
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class LiquidWarn < Liquid::Tag
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def initialize(tag_name, text, tokens)
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super
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@warning = text
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end
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def render(_context)
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## Use "notice" instead of "warning" because we use grep to
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## treat some Jekyll warnings as errors
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print "Notice: " + @warning + "\n"
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end
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end
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end
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Liquid::Template.register_tag('warn', Jekyll::LiquidWarn)
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