A.3. Nonstandard parsing of Subtags

Subtags are parsed within the containing array-list or hash-list context created by the containing tag (see Looping tags and Sub-tags).

• All subtags at an earlier precedence level are treated before any in the next level.
• Within the same level, tags are processed in the order the appear on the page.
• Any standard tags are processed during 'interpolate' (before) or 'reparse' (after) phases of processing the containing tag.

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Technical note

Processing within a hash- or array-list is actually done as a series of global regular expression substitutions on the page. Each substitution replaces one tag with the output of the subroutine(s) associated with it.

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In array-list context, subtags are processed in the following order:

1. Check for PREFIX-line and prepare for it if present (does not process PREFIX-line at this time)
2. PREFIX-sub definitions processed
3. if-PREFIX-* nesting resolved
4. PREFIX-alternate processed
5. if-PREFIX-param processed
6. if-PREFIX-pos processed
7. PREFIX-pos processed
8. if-PREFIX-field processed
9. PREFIX-line processed
10. PREFIX-increment processed
11. PREFIX-accessories processed
12. PREFIX-options processed
13. PREFIX-code processed
14. PREFIX-description processed
15. PREFIX-field processed
16. PREFIX-price processed
17. PREFIX-change processed
18. PREFIX-calc processed
19. PREFIX-exec processed
20. PREFIX-filter processed
21. PREFIX-last processed
22. PREFIX-next processed
23. User's previous HTML widget SELECTED settings restored
24. Reparse standard tags in output of above (if reparse enabled for the containing tag)

In hash-list context, subtags are processed in the following order:

1. PREFIX-sub definitions processed
2. if-PREFIX-* nesting resolved
3. PREFIX-alternate processed
4. PREFIX-line processed
5. if-PREFIX-param processed
6. if-PREFIX-field processed
7. if-PREFIX-modifier processed (if-PREFIX-param and if-PREFIX-modifier are functionally identical except for parse order)
8. PREFIX-increment processed
9. PREFIX-accessories processed
10. PREFIX-options processed
11. PREFIX-sku processed
12. PREFIX-code processed
13. PREFIX-quantity processed
14. PREFIX-modifier processed
15. PREFIX-param processed
16. PREFIX-quantity-name processed
17. PREFIX-modifier-name processed
18. PREFIX-subtotal processed
19. PREFIX-discount-subtotal processed
20. PREFIX-code processed again differently (operating on new instances of PREFIX-code in output of above?)
21. PREFIX-field processed
22. PREFIX-description processed
23. PREFIX-price processed
24. PREFIX-discount-price processed
25. PREFIX-difference processed
26. PREFIX-discount processed
27. PREFIX-change processed
28. PREFIX-tag processed (*** CHECK THIS TAG NAME ***)
29. PREFIX-calc processed
30. PREFIX-exec processed
31. PREFIX-filter processed
32. PREFIX-last processed
33. PREFIX-next processed
34. User's previous HTML widget SELECTED settings restored
35. Reparse standard tags in output of above (if reparse enabled for the containing tag)