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RE: Bookmark the end of file?

From: Drew Adams
Subject: RE: Bookmark the end of file?
Date: Mon, 6 Apr 2015 16:59:13 -0700 (PDT)

> how to set a bookmark to the end of some file (IOW, (point-max))?  (Of
> course it is possible with Bookmark+, but is there any UI for that
> there?  Is it at all possible with vanilla bookmarks?)
> My use case is a file which I visit (almost) every day to /add/
> something to its end (e.g., a ledger file).  I can imagine other,
> similar uses for that, too.

1. You can use `bookmark-after-jump-hook' with both vanilla
`bookmark.el' and Bookmark+.  Add a function that goes to
`point-max', for instance.

If you don't want to do that for all bookmarks (which I
imagine), you can define a command that binds that hook and
then jumps to a particular bookmark or lets you choose a
bookmark from some particular set of bookmarks.  IOW, create
your own `jump-then-goto-eof' command.

2. Both vanilla bookmarks and Bookmark+ bookmarks save text
before and after point, and then use that text to try to
reposition the location later.  Usually that enables relocation

But if the location is at eof/eob and you append new text to
the file then this relocation might fail.

With Bookmark+, you can bookmark the file and then combine
that bookmark with a function bookmark that goes to `point-max'.
That is, create a sequence bookmark of: (1) the bookmark to the
file followed by (2) a function bookmark that goes to eof.

3. With Bookmark+, you can tag a bookmark with tag "bmkp-jump".
The function that is the value of a "bmkp-jump" tag is called
just after standard hook `bookmark-after-jump-hook' is invoked.

Note that this is a case where the tag is not just a string -
it is a cons with car "bmkp-jump" and with cdr the extra jump
function.  IOW, you can use tag "bmkp-jump" to invoke functions
that are specific to individual bookmarks.  In this way,
bookmarks can have their own, extra jump behavior.

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