How to single comment out selected text in a bulk? I have 100+ lines of text that have to be commented out, single line each but idk how to do it, you can only comment out in bulk multiple lines that are treated like one entity using /* text */, but I want to transform:
a
b
c
into:
--a
--b
--c
in a single command, anyone knows how to do it?
Highlight the lines and then use:
Ctrl+/
Ctrl+Shift+/ or
from the menu Source > Toggle Line Comments.
Related
What's an easy way to convert a multi-line comment (e.g. JSDoc with each line separated by line breaks) into a paragraph without any line breaks that I can copy into an email or another document?
I know I can use search & replace with regular expressions, but is there a more ergonomic way to do it?
You probably knew that you can use multiple cursors to change multiple lines at once, but did you know you can also use them to remove line breaks? Assume you start with this comment:
/**
* Returns a new `Temporal.LocalDateTime` instance representing the first
* valid time during the current calendar day and time zone of `this`.
*
* The local time of the result is almost always `00:00`, but in rare cases it
* could be a later time e.g. if DST starts at midnight in a time zone. For
* example:
* ```
* const ldt = Temporal.LocalDateTime.from('2015-10-18T12:00-02:00[America/Sao_Paulo]');
* ldt.startOfDay; // => 2015-10-18T01:00-02:00[America/Sao_Paulo]
* ```
*/
First part: use multiple cursors to remove the prefix characters on each line.
Click on the upper-left corner of the comment (the /**).
Now hold down Cmd+Shift (Alt+Shift on PC) and click after the */ on the last line of the comment section.
This will create a columnar, multi-line selection that includes the non-text prefix characters on each line. If the selection doesn't include all the prefix characters, you can hold down the Shift key and use the left or right arrow keys to adjust the width of the selection.
Press the Delete key to remove prefix characters on all lines.
Second part: it's time to delete the line breaks and replace them with spaces. I discovered today that you can use multiple cursors for this part too!
After you've deleted the prefix text above, but before you've pressed any other keys, press the backspace key. It will delete the line breaks but leave each cursor in the same place!
Type the spacebar once to insert one space to replace each line break.
Press ESC to clear multiple selections, and delete the extra space at the start of the line. You may have an extra space(s) at the end of the line too that may need trimming.
Copy the resulting one-line text.
Use Cmd+Z (Ctrl+Z on Windows) to undo the last few changes so your code comment will be back to normal.
Now you can paste the copied text into an email!
The same solution works to replace line breaks with spaces in any multi-line text, not only code comments.
I'm sure that many of you already knew how to do this trick, but I found it so easy and so cool that I thought it was worth sharing as a Q&A here so others can learn about this trick too.
Here's what the steps look like in the VSCode IDE:
Before deleting, you should see something like this:
After deleting prefix characters:
After deleting line breaks (note the multiple cursors are still there):
After inserting spaces in place of the deleted line breaks:
I usually select the first line break, then hit/hold command+D repeatedly to add cursors at all line endings I want to edit. Then, just hit space once.
I have an HTML file that has around 700 of my bookmarks. Each line has link and a tag like the following:
<li>Strunk, William, Jr. 1918. The Elements of Style</li>
The file has multiple lines with the same tags. I want to group the lines with the same tag next to each other. I was trying to do it in vscode. I can select multiple occurrences of the same phrase with Ctrl+Shift+L, but I could not select the lines. Is there a way for doing this?
After your comment below that clarified what you are trying to do I think you will find this easier than your solution.
Select the text to check.
Ctrl-Shift-L selects all occurrences. The command is Select All Occurrences of Find Match - if that is bound to something else on your OS, use that.
Ctrl-L will select the entire line. (Changed from Ctrl-i in Feb. 2019.) That is using the command Expand Line Selection - again find that command in your Keyboard Shortcuts and use the same command.
Cut and paste them where you want.
There is also an extension vscode-dup-checker that will find and delete duplicate lines. I don't know if you actually want to delete the duplicates though.
I added a gif to show it in action - it only uses steps 1-4 above:
Ok, I found one method that works. I don't know if it the best though.
After Ctrl+Shift+L, you have cursors on all the lines with that phrase. Then pressing Home will take you to the beginning of all of them and Shift+End then will select all those lines on which you have the cursor. Then cut the text and paste it wherever you wish. Came out to be pretty useful for me while I was editing a html file with 700 links.
I want to select multiple lines and put a cursor at the beginning of each line. Sublime Text can do this with Ctrl-Shift-L
select multiple lines
ctrl + shift + L and then put cursor at beginning of each line
Press Crtl + Shift + Alt + Arrow up/down to select multiple lines in Visual Studio Code. Note that the selected lines will be in one column (if possible).
You can also mark some lines and then do this combination and you have all selected lines included.
Moreover you can press and hold Alt and click the lines you need. This way you can select multiple lines that are not neighbours or in the same column.
To do exactly what Ctrl-Shift-L does in Sublime Text, you must do:
On Windows:
Select the lines.
Alt-Shift-I (will add multiple cursors)
Shift-Home (will go at the beginning of each line and be selected)
On Mac :
Select the lines.
alt-shift-I (will add multiple cursors)
cmd-shift-←
(will go at the beginning of each line and be selected)
More information in this answer.
Put cursor at beginning of first line
Ctrl-Shift-Alt-Arrow down/up will put a cursor at the beginning of the following/preceding lines
Ctrl-I will select those lines with the cursor at the beginning of each line.
NOTE : On my vscode the cursors look like they might be shifted down one line but they actually are not - the are in the right place. If you start typing, it works but you have to hit Enter when you are done to get back separate lines. It is a little quirky but works as you would expect.
EDIT (using a hint from #Maxime's answer)
Select your test first.
Alt-Shift-I : puts cursors at the end of each of those lines but text unselected (I as in island not a lowercase L)
Function-Home : put cursors at beginning of each line.
Ctrl-I : selects all lines.
Important: read the NOTE above.
--------------------- v1.43 see How to put the cursor at the end of all selected lines in Visual Studio Code? with column selection mode it is easy to put the cursor at the beginning or end of lines selected by dragging.
You can hold alt and click the places you need with the mouse. This way you can select rows that aren't related, like row 10,15,18. Also you can select at different places in the same row.
I hope this helps someone, but there is a setting in VSCode called Editor: Multi Cursor Modifier which may do what OP is asking:
Say you have the following text:
abc
123
abc
456
789
abc
abc
I want to remove all "abc" lines and just keep one. I don't mind sorting. The result should be like this:
abc
123
456
789
If the order of lines is not important
Sort lines alphabetically, if they aren't already, and perform these steps:
(based on this related question: How do I find and remove duplicate lines from a file using Regular Expressions?)
Control+F
Toggle "Replace mode"
Toggle "Use Regular Expression" (the icon with the .* symbol)
In the search field, type ^(.*)(\n\1)+$
In the "replace with" field, type $1
Click ("Replace All").
If the order of lines is important so you can't sort
In this case, either resort to a solution outside VS Code (see here), or - if your document is not very large and you don't mind spamming the Replace All button - follow the previous steps, but in steps 4 and 5, enter these:
(based on Remove specific duplicate lines without sorting)
Caution: Blocks for files with too many lines (1000+); may cause VS Code to crash; may introduce blank lines in some cases.
search: ((^[^\S$]*?(?=\S)(?:.*)+$)[\S\s]*?)^\2$(?:\n)?
replace with: $1
and then click the "Replace All" button as many times as there are duplicate occurrences.
You'll know it's enough when the line count stops decreasing when you click the button. Navigate to the last line of the document to keep an eye on that.
Coming in vscode v1.62 is a command to eliminate duplicate lines from a selection:
Delete Duplicate Lines in the Command Palette
or
editor.action.removeDuplicateLines as a command in a keybinding
(there is no default keybinding for this command)
Here is a very interesting extension: Transformer
Features:
Unique Lines As New Document
Unique Lines
Align CSV
Align To Cursor
Compact CSV
Copy To New Document
Count Duplicate Lines As New Document
Encode / Decode
Filter Lines As New Document
Filter Lines
Join Lines
JSON String As Text
Lines As JSON String Array
Normalize Diacritical Marks
Randomize Lines
Randomize Selections
Reverse Lines
Reverse Selections
Rotate Backward Selections
Rotate Forward Selections
Select Highlights
Select Lines
Selection As JSON String
Sort Lines By Length
Sort Lines
Sort Selections
Split Lines After
Split Lines Before
Split Lines
Trim Lines
Trim Selections
Unique Lines
Removes duplicate lines from the document Operates on selection or
current block if no selection
Unique Lines As New Document
Unique lines are opened in a new document Operates on selection or
current block if no selection
I haven't played with it much besides the "Unique Lines" command but it seems quite nicely done (including attempting a macro recorder!).
To add to #Marc.2377 's reply.
If the order is important and you don't care that you just keep the last of the duplicate lines, simply search for the following regexp if you want to only remove duplicte non-empty lines
^(.+)\n(?=(?:.*\n)*?\1$)
If you also want to remove duplicate empty lines, use * instead of +
^(.*)\n(?=(?:.*\n)*?\1$)
and replace with nothing.
This will take a line and try to find ahead some more (maybe 0) lines followed by the exact same line taken. It will remove the taken line.
This is just a one-shot regex. No need to spam the replace button.
This now also takes the comment of #awk into account, in where the last line has to have a linefeed in order to be identified as a duplicate. This is no longer the case now by excluding the \n from the line to search and adding a $ to the line found.
I just had the same issue and found the Visual Studio Code package "Sort lines". See the Visual Studio Code market place for details (e.g. Sort lines).
This package has the option "Sorting lines (unique)", which did it for me. Take care of any white spaces at the beginning/end of lines. They influence whether lines are considered unique or not.
Install the DupChecker extension, hit F1, and type "Check Duplicates".
It will check for duplicates and ask if you want to remove them.
Try find and replace with a regular expression.
Find:
^(.+)((?:\r?\n.*)*)(?:\r?\n\1)$
Replace:
$1$2
It is possible to introduce some variance in the first group.
If you don't mind some Vim in your VS Code. You can install Vim emulation plugin.
Then you can use vim commands
:sort u
It will sort lines and it will remove duplicates
Sublime Text 3
It has blisteringly fast native permutation functions.
Edit > Permute Lines > Unique or ⇧⌘U, and
Edit > Permute Selections > Unique
Visual Studio Code is my daily driver. But, I keep Sublime Text on standby for these situations.
Not actually in Visual Studio Code, but if it works, it works.
Open a new Excel spreadsheet
Paste the data into a column
Go to the Data tab
Select the column of data (if you haven't already)
Click Remove Duplicates (somewhat in the middle of the bar)
Click OK to remove duplicates.
It is not the best answer, as you specified Visual Studio Code, but as I said: If it works, it works :)
Is there a way to temporary comment out some of code in SQLiteStudio? I have to add -- or /* ... */ each time and remove them manually. It will be greate if we can trigger comment using a button or shortcut like Ctrl-/. How do you tackle this problem when using SQLiteStudio?
(SQLiteStudio 3.0.7 on Windows 7)
Now it is available via these notations:
-- for one line comments
/*
for several line comments
*/
Edit:
Ctrl + / : comments the line which cursor is on it, also this hot key adds several line comment notation to the start and end point of selected area.