[Boost-docs] Recent changes broke docs for boost.algorithm

From: Marshall Clow (mclow.lists_at_[hidden])
Date: 2022-07-01 19:52:11

I have opened https://github.com/boostorg/quickbook/issues/15 <https://github.com/boostorg/quickbook/issues/15> to capture the details; but I’m hoping it’s something weird in the source files, rather than in Quickbooks.

Gist of the problem:

This compiles w/o error and generates dox.

```
[section:Copy Variations on Copy]
[section:variations_on_copy]

[section:copy_until                copy_until                ]
[*[^[link header.boost.algorithm.cxx11.copy_if_hpp                   copy_until]                  ] ]
Copy all the elements from the start of the input range to the output range until the predicate is satisfied
[endsect:copy_until]

[section:copy_while                copy_while                ]
[*[^[link header.boost.algorithm.cxx11.copy_if_hpp                   copy_while]                  ] ]
Copy all the elements from the start of the input range to the output range while the predicate is satisfied
[endsect:copy_while]

[section:copy_if_until             copy_if_until             ]
[*[^[link header.boost.algorithm.cxx11.copy_if_hpp                   copy_if_until                ] ]
Copy all elements that satisfy the element predicate from the start of the input range to the output range until the termination predicate is satisfied

[endsect:copy_if_until]

[section:copy_if_while             copy_if_while             ]
[*[^[link header.boost.algorithm.cxx11.copy_if_hpp                   copy_if_while                ] ]
Copy all elements that satisfy the element predicate from the start of the input range to the output range while the termination predicate is satisfied

[endsect:copy_if_while]

[endsect:variations_on_copy]
[endsect:Copy]
```

If I remove the blank lines before "[endsect:copy_if_until]” or "[endsect:copy_if_while]”, the build fails:

```
Generating output file: ../../../bin.v2/libs/algorithm/doc/algorithm.xml
algorithm.qbk:148: error: Endsect has incorrect id 'variations_on_copy', expected 'copy_if_until', near column 9.
algorithm.qbk:149: error: Endsect has incorrect id 'Copy', expected 'variations_on_copy', near column 9.
algorithm.qbk: warning: Missing [endsect] detected at end of file.
Error: Error count: 2.
```

Any ideas?

— Marshall