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# Bidirectional links with eev
Eduardo Ochs

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Consider the two sexps below:

    (code-c-d "foobar" "/tmp/foo/bar/" :anchor)
    (code-c-d "fb"     "/tmp/foo/bar/" :anchor)

Each one of them defines several "short hyperlink" functions. After
running them the three sexps below are roughly equivalent:

    (find-file "/tmp/foo/bar/plic.txt")
    (find-foobarfile "plic.txt")
    (find-fbfile "plic.txt")

The "`code-c-d`"s above also define functions with even shorter names
&#x2013; `find-foobar` and `find-fb` - that point to "anchors" in files in
the directory `/tmp/foo/bar/`. The three sexps below are roughly
equivalent -

    (find-fline "/tmp/foo/bar/plic.txt" "«bletch»")
    (find-foobar "plic.txt" "bletch")
    (find-fb "plic.txt" "bletch")

Until feb/2022 the only way that I had to produce these hyperlinks to
anchors quickly required a LOT of muscle memory&#x2026; I had to type this,

    M-1 M-h M-w  M-h M-h  9*<down>  M-h M-2  M-h M-y  M-h M--  M-h M-w  M-k

where the number of "`<down>`"s depended on whether I preferred
`find-foobar` of `find-fb` - i.e., of on what is my preferred "code"
for the "directory" `/tmp/foo/bar/`; either "`foobar`" or "`fb`".

In this presentation I will show a much better way to generate short
hyperlinks to anchors and push these short hyperlinks to the kill
ring, and how I use that to create bidirectional hyperlinks between my
notes on a language $LANGUAGE and programs written in that language.

For more info see [this page](http://angg.twu.net/emacsconf2022-kla.html).



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