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by alganet 1257 days ago
My main use cases:

- Replacing variable and function names: I have Ctrl+D bound to "Mark Next Occurrence", which creates a multiple cursor and replicates the selection I have on my main cursor to the next following similar thing. Instead of changing a name and then search/replace it afterwards, I selectively mark the next occurrences within the scope I'm in and change them all at once.

- Editing multiple similar expressions: If I want to add a new parameter to a function, I can multi-select `existingParam,` (including the comma) and add the new parameter to multiple occurrences within a scope.

- Ctrl-based multi navigation: I use Ctrl + Arrow Keys to skip words a lot. In combination with multiple cursors, it allows each cursor to skip words individually. This is useful for the previous use case (editing parameters) when each parameter might have a different name (and therefore a different length).

- Several alignment and formatting things: This is hard to explain in text. I use it to align the ` = ` sign in repeated variable assignments, to manage indentation, etc.

I can do most of these things using other tools if needed (I did before multiple cursors). The parameter editing is often a vi "showcase" scenario, which I consider to be much more effective using mc than repeating actions or macros.

I don't place cursors with a mouse, I don't add cursors below or above or any other feature. Just "select the next occurrence" or "select all occurrences".

1 comments

Author here: This is interesting to me. I usually solve all the multi-cursor usage with a range based search and replace (that it's supported in ecode by selecting the range and Ctr/Cmd + F to search and replace over that range). I would like to see how it's used by other users to have a better idea on how it should behave a multi-cursor feature. If you know how to record a video of you editing in the way you explained it would be awesome to see it. Thanks
I use for things that I could do with find and replace (often requiring regex) but I find it faster/easier to just use multiple cursors. With multiple cursors I can convert a PHP array to JSON or JS very easily or take a list of params and turn it in to an object. I do this often when creating client-side TypeScript interfaces for the data the server is going to spit back at me. Example:

* I just select `public` on my first PHP class property

* Use multiple cursors to select all `public`'s that are before the properties I want (Normally by adding 1 selection at a time since I only want the props, not the public methods)

* Arrow over right 3 times (Now my cursor is right before the property names, after the `$`, this is PHP remember)

* Hold shift + control

* Arrow once more to the right (now the variable names are selected)

* Hit Cmd+c (copy all variable names)

* Open new IMyInterfaceDTO.ts file

* Type `export interface IMyInterfaceDTO { <cursor is here now> }`

* Paste in all my variables between the `{}`

* Select the new-line between each variable (I want a cursor before each variable name)

* Then add in `: string;` after each variable (string is the most common, I then manually change it to number/boolean/etc on the props that need it)

Done, now I have a TypeScript interface that matches my php class that gets turned into JSON.

Here is an example of what I'm talking about: https://cs.joshstrange.com/jlH4BnT3

Yes, I could accomplish the same thing with find and replace using a regex but this lets me see each step of the transformation and react easier. Maybe if I was a regex pro I'd feel differently but this method works really well for me and how my brain works. I know it's a lot of steps but I do it reflexively almost on autopilot verses having to stop and think about a regex.

Awesome, it really helps me to visualize the usefulness of the feature. Thanks for taking the time to explain it.
Oh, I completely forgot about copying and pasting multiple cursors. I'm a hardcore user of that as well.
Sure can do!

Here it is: https://streamable.com/vwj0hs

I did three things there:

1. Replace the prefix of several variables from `$mock` to `$stub`

2. Added a prefix to all properties of the object `$r`, which left the camelCasing missing an uppercase letter, I selected that letter on all properties and used "Transform To Uppercase" action on VSCode to camelCase it properly back again.

3. Aligned some keys of two arrays. I selected them, placed some minimal spacing, then hit `Home` to align the cursors to indentation, then used `Ctrl+Delete` to trim the added spaces.

I'll try the range based search, I never used something like that and might like it.

Thank you very much! Indeed it looks really useful. I hope I can implement it soon.
This is also how I go about it in Doom Emacs. I guess either way solves the same problem, just differently.