On Sun, Jan 23, 2022 at 10:20:03AM -0800, Per Bothner wrote: > > On 1/22/22 02:07, Gavin Smith wrote: > > @chapter or @section without @node would become a lot like > > @heading except perhaps there could also be an @anchor generated > > for the chapter heading as well as appearing in the table of > > contents. There would have to be a check that the name of the > > automatic @anchor didn't clash with any other @node or @anchor. > > If the @section/whatever is immediately preceded by an @anchor, > one can use the explicit anchor instead. In a sense the @anchor > functions like the @missing node command, except in terms of splitting.
I see that indeed, there is currently no good way to associate a sectionning command with an anchor preceding it such that links appear before the heading and not after, and still be considered to be with this sectioning command and not the previous one. Yet, I do not think that associating an @anchor to the next sectioning command is correct to do in every situations, as the @anchor could really be meant to be at the end of the preceding section. > I assume you would disallow sub-nodes: I.e. the next @node command would > have to be followed by a sectioning comand at the same or higher level. There are no such constraints. Actually, there are two different and (well) defined behaviours that consider either nodes or sectioning commands as the determining document unit organization. With USE_NODES set to 1 nodes are determining for document unit split. With USE_NODES set to 0, sectioning commands are determining for document unit split. A node is always associated to the following sectioning command if there is such a sectioning command, and both are together on the same document unit. Besides, with USE_NODES=1, lone @node command starts a new document unit and all the sectioning commands appearing after a node and before the next node are in the node document unit. With USE_NODES=0, lone sectioning commands start a document unit, and all the lone nodes following a sectioning commands and not before another sectioning command are within the sectioning command document unit. This allows to handle formats that are more in line with sectioning commands organizations, book-like formats (DocBook, LaTeX), formats that are more in line with @node organization (Info) and formats that can be both (HTML). For HTML, in the default case USE_NODES=1, in the Texi2HTML style USE_NODES=0. -- Pat
