Filter Infinite Scroll’s `footer_widgets` parameter.
infinite_scroll_has_footer_widgets
infinite_scroll_has_footer_widgets-
filter -
filter infinite_scroll_customization_fileFilter the path to the Infinite Scroll compatibility file.
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filter grofiles_hovercards_data_callbacksFilter the Gravatar Hovercard PHP callbacks.
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filter jetpack_portfolio_thumbnail_sizeChange the Portfolio thumbnail size.
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filter portfolio-project-post-classFilter the class applied to project div in the portfolio
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filter the_contentThis filter is already documented in core. wp-includes/post-template.php
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filter jetpack_testimonial_thumbnail_sizeChange the thumbnail size for the Testimonial CPT.
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filter testimonial-entry-post-classFilter the class applied to testimonial div in the testimonial
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filter jetpack_enable_cptAllow something else to hook in and enable this CPT.
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action jetpack_holiday_snow_option_updatedFires when the holiday snow option is updated.
Jetpack Developer Resources 