I'll check out that Freewin plugin, thank you. I'm not sure how to actually
execute the functions, even if i've found the definition.
Recently I made this (which is obviously very ugly for multiple reasons) -
for a duplicate-line command.
I started with your example, Tom, then added/modified the built-in command
for `extend-to-line` (which has a bug if on the last character of the line,
but i haven't had time to look at that yet). I wasn't sure how to call
these without rewriting them from scratch.
```
@language python
# duplicate-line copies the selected line in the body pane
# and preserves the insertion point on the new line as well
# todo: incorrect if at last character in line
w = c.frame.body.wrapper #wrapper
p = c.p #position
s = p.b #string of body
u = c.undoer #undo
orig_ip = w.getInsertPoint()
max_chars = len(s)
start = orig_ip
while 0 <= start < max_chars and not s[start] == '\n':
start -= 1
start += 1
end = orig_ip
while 0 <= end < max_chars and not s[end] == '\n':
end += 1
line_text = s[start:end]
new_line_text = '\n' + line_text
column_offset = max(0, orig_ip - start)
new_ip_offset = len(new_line_text)
new_ip = orig_ip + new_ip_offset
head, tail = s[:end], s[end:]
undoType = 'duplicate-line'
undoData = u.beforeChangeNodeContents(p)
p.b = head + new_line_text + tail
w.setInsertPoint(new_ip)
c.setChanged()
p.setDirty()
u.afterChangeNodeContents(p, undoType, undoData)
c.redraw()
# g.es('---')
```
On Tuesday, January 10, 2023 at 5:30:56 PM UTC-5 [email protected] wrote:
> Yes, it can be hard to find out how to do things you want in Leo. The
> good news is that you can do most anything. Remember to undo/redo
> operations that change a node or the tree - my title-case script shows how
> to do that for node content.
>
> Leo's code base is in the PyLeoRef.leo outline, as I imagine you already
> know. IMHO, the best way to find code that might be related to what you
> want is the Nav tab, along with tab completion of minibuffer commands.
> When you type (or paste) into the search box in the Nav tab, it shows you
> node headlines that match. After you hit ENTER, it also shows you body
> matches.
>
> For example, you write that you want to duplicate a line. So you have to
> select or at least find a line to copy. I remembered that there is a
> command to move a line up. I typed "move" into the minibuffer and then TAB
> to get a list of all matching command. There it was - "move-lines-up". I
> copied that and pasted it into the search box in the Nav tab. This showed
> a match for "@cmd('move-lines-up')". Clicking on that took me to where the
> command is defined. Right there it shows how to get the selection range,
> and how to get the line from the selection.
>
> The other excellent feature is the ability to CTRL-click on a function or
> method call and (usually) get taken to its definition.
>
> Forgive me if you already know these things. They have been really helpful
> for me. And, as Edward would advise, judicious use of clones can be very
> helpful. Also, you might want to check out the Freewin plugin - it opens a
> stand-alone window that shows a single node in a basic editor, which you
> can keep open alongside Leo's window for reference while you navigate to
> some other node. That's probably new since you were last working with Leo.
>
> On Tuesday, January 10, 2023 at 4:11:17 PM UTC-5 Kevin Henderson wrote:
>
>> This is great timing Thomas, thank you!
>> I've been away from Leo for a while, but making another attempt to get
>> back into it.
>>
>> I've had a _heck_ of time figuring out how to do what showed, in my case
>> I wanted a 'duplicate-line' command.
>> It really is tremendously difficult to figure out what to do or where to
>> start.
>>
>> a couple of observations:
>> - what got me the furthest (but not all the way there) is/was the
>> `scripts.leo` file (i.e. the 'Text' section).
>> - most of the scripts & guides seem to be around working with nodes
>> (which seems easier) rather than body text.
>> - the body text seems very challenging/manual to work with, perhaps some
>> utility functions would make this easier
>> - e.g. for my duplicate line command, i'll have repeat most of Thomas's
>> code above, there isn't a simple utility function
>> - there are already commands such as 'extend-to-line'/extendToLine, but
>> do I have access to these or do i have to reproduce them?
>> - it would be nice to group these docs & content by context, e.g. the
>> guides with the examples
>>
>> Anyway, it's good to say hello again, glad to see things are still
>> plugging.
>>
>> Cheers & Happy 2023,
>> Kevin
>>
>>
>> On Wednesday, January 4, 2023 at 1:27:17 PM UTC-5 [email protected]
>> wrote:
>>
>>> Let's add the scripting-miscellany link to Leo's Help menu.
>>>
>>> On Wednesday, January 4, 2023 at 11:32:09 AM UTC-5 Edward K. Ream wrote:
>>>
>>>> On Wednesday, January 4, 2023 at 10:18:53 AM UTC-6 Edward K. Ream wrote:
>>>>
>>>> > I've just added this entry
>>>> <http://leoeditor.com/scripting-miscellany.html#keeping-clean-files-up-to-date>
>>>>
>>>> (online and in devel).
>>>>
>>>> And I've just updated this page
>>>> <http://leoeditor.com/directives.html#clean-path> in Leo's Reference
>>>> Guide.
>>>>
>>>> Edward
>>>>
>>>
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