HTML-Fan wrote:

Yep, and I've seen a bunch of text-based languages like C++ and Java using those little + and - buttons to show or hide a { } section.

• A new style for folded blocks including an arrow or other indicator that the block was folded.
  
• The ability to run a folded block by clicking on it the same way as you would run a non-folded custom block (This already works. Just verifying).
  
• Options in the “Edit” tab in the top left of the editor for “Expand all custom blocks” and “Fold all custom blocks”.
  
• A new option when right-clicking a custom block to either “Expand block” or “Fold block” (Accessibility for users that can't click the normal button).
  
• A feature that “pushes down” blocks beneath a folded custom block when it is unfolded so that they don't get covered by it. This also includes a feature to “pull up” the blocks beneath the folded block when it is folded so that the folding process doesn't leave too much space under the custom block.
  
• Although not part of the original suggestion, I think it would also be really helpful to be able to fold conditionals (the blocks shaped like a C) and hat blocks (green flag clicked, when I receive message, etc.) Although this feature isn’t necessary to complete the suggestion of the original poster, it would still help reduce clutter and ease the use of the Scratch editor for mobile users in the same way that folding custom blocks would.
  

MiniCoder11 wrote:

I'd use this feature hundreds of times a day.

As a frequent user of massive custom blocks (mostly for the “run without screen refresh” feature and compactness), I can say from experience that large custom blocks with hundreds of child blocks are annoying to move around and lag the editor. With the ability to fold custom blocks, Scratchers would be able to easily move around large scripts and freely scroll the editor without the Blockly rendering engine turning your editor into a slideshow.

Additionally, tablet users (I mainly use a desktop but have spent lots of time using Scratch on a tablet) find it hard to drag around large scripts because it blocks out the screen around your finger and causes the tablet's browser to slow to a few frames per second. With code folding, tablet users would be able to fold their code, move it to a new spot, unfold it, and start editing again with minimal frustration and impact on their tablet's performance.

Code folding is a feature that I find myself missing every time I use Scratch because it is extremely useful. Custom blocks exist to allow users to save space and time in their code by abolishing the need for Scratchers to repeat themselves in their code. Code folding would allow Scratchers to organize their workspace even more and, if custom blocks automatically folded once they were dragged out of the backpack, you would be able to neatly position it in your code rather than cover your entire editor.

Scratch already has a feature similar to code folding but it is implemented only for editor comments.

Here is a list of features we'd need to implement code folding correctly:

• A new style for folded blocks including an arrow or other indicator that the block was folded.
  
• The ability to run a folded block by clicking on it the same way as you would run a non-folded custom block.
  
• Options in the “Edit” tab in the top left of the editor for “Expand all custom blocks” and “Fold all custom blocks”.
  
• A new option when right-clicking a custom block to either “Expand block” or “Fold block”.
  

Even though I'd think that these changes would be easy to implement, we still have to factor in that Scratch now uses Google's Blockly API so the Scratch team may have to ask the Blockly team to add this feature instead of just adding it themselves. If this is the case, I'd love to see if we could come together and submit a collective request for the feature.

MiniCoder11 wrote:

• A new style for folded blocks including an arrow or other indicator that the block was folded.
  
• The ability to run a folded block by clicking on it the same way as you would run a non-folded custom block.
  
• Options in the “Edit” tab in the top left of the editor for “Expand all custom blocks” and “Fold all custom blocks”.
  
• A new option when right-clicking a custom block to either “Expand block” or “Fold block”.
  

when green flag clicked
repeat until <suggestion is accepted>
bump
end
say [YES!]

-Zyte- wrote:

Support! For really complicated blocks, or people that just want their workspace to be cleaner, like me, can use this so it doesn't clutter up the entire workspace! Also, it's called “collapsing” (folding it up) and “expanding” (expanding, do i really have to explain?) custom blocks, but you can say whatever you want.