I'm using Lean in VS Code under macOS Catalina with a U.S. keyboard. How do I enter symbols such as for the implication arrow, union, intersection, subset?
Is there some built-in or add-on palette to facilitate this? Or do I have to use Option key combinations and, if so, where do I find the appropriate codes?
From the Lean reference:
You can enter Unicode characters with a backslash. For example, \a inserts an α.
Here are some ways to get the symbol codes:
Guess. Many of the symbols have intuitive names, like \union or \cup for ⋃.
Use the tooltip. If you already have the symbol, then hovering over it will reveal the code.
If you don't have the symbol, right click > Go to definition on a related symbol will often land you close by.
If all else fails, check translations.json. You can usually get away with guessing, though.
⟶ System preferences
⟶ Keyboard
⟶ Input Sources Tab
⟶ + at bottom left
⟶ add and select Unicode Hex Input
from panel on right
⟶ enter unicode characters via alt+[code]
⟶ example, to enter the sign for union, hold down Alt and press 222a
To find additional codes, you can simply Google search Unicode Union for example, and it's almost always the first hit
https://www.google.com/search?q=unicode+Union&oq=unicode+Union&aqs=chrome..69i57.3027j0j7&sourceid=chrome-mobile&ie=UTF-8
Related
I am new to notepad++ and like it very much, since I can customize how my text documents look more easily than with wordpad. However, I would like to know if it’s possible to enter accented characters like in wordpad (I thought it was a windows thing, but perhaps it isn’t). In wordpad, I can type, for instance, ctrl-’ then i to get an accented í character. Similarly, I can type ctrl-shift-~ then n to get the accented ñ character. It makes it much easier to enter accented characters than copying and pasting from the character map application, or trying to remember code points. When I tried this method in notepad++ I just got the plain character without the accents. I should also mention that when I open documents with such accented characters already present they appear just as expected. Is there a way to enter accented characters like this in notepad++ using only the keyboard? I am using the latest notepad++ under Windows 7.
In Notepad++ you can go to “Edit” then select “Character Panel” near the bottom of the drop down menu. It will show you the ASCII set available which includes most accented characters. You find the character you want and there will be a number for it, to easily use that, press and hold your ALT key, then, on your keypad on the right side of your keyboard type zero followed by the number for that character. So for something like “ñ” for example, the code for it is 241, so you would press ALT and then type 0241 on the keypad while holding down ALT and you will get the character you need. That works in most Windows programs, even in here.
This only works for ASCII characters in the range of 0 to 255. I don't know of a method other than copying and pasting from the “Character Map” app available in Windows for Unicode. Though I did test Wordpad with the Decimal number of the Hex value you see for a Unicode character above 255 and it will work with the ALT+#### in there, and probably other places, but it doesn't work in Notepad or Notepad++ for some strange reason, sadly. Two I use a lot and have memorized are ALT+0147 and ALT+0148 for the quotation marks “like these”, so once you use the numbers enough you tend to get used to them, or you can jot down the ones you use the most.
For anyone searching for a solution and coming across this page, try this (Windows): install and use the US International keyboard instead of the plain US keyboard. Search for "windows keyboard us international install" or something similar. I liked the techlanguage.com write-up on it and the teckangaroo.com step by step on how to install. Hope this helps someone in future looking around as I was earlier today for how to easily meet this need.
You can make your own keyboard layout to enter arbitrary characters anywhere in Windows, using MSKLC. Here's one I made earlier.
I think it is configured in the input method. With input method containing the characters you mentioned, you can press key combinations to get special letters.
You can add a keyboard layout preset in Windows. Under "Language and Regions" - "Language" - "Language settings" - "Input method" settings in Control Panel, you can add all what you want. Like this:
Switch keyboard layout with Alt + Shift.
I cannot figure out how to do this for the life of me apart from doing a find-replace on 4 spaces and converting to tabs (Version 0.10.2). I can't think of an editor/IDE that doesn't have a specific feature to do this. Does VSCode?
Since fix of: https://github.com/Microsoft/vscode/issues/1228 the editor supports it out of the box. Simply go for:
F1,
indentationToSpaces or indentationToTabs (depending on your need)
Enter.
Another way to do it is click the current indentation (Tab/Spaces:n) on the footer which will open your indentation options where you can select what you want to do.
If you are trying to convert non-leading tabs to spaces (or vice versa) you can use a regex search and replace.
Press CTRL + H
Click the .* button to search using regular expressions.
To search for tabs enter [\t] in Find box.
Enter spaces in Replace box and perform your replace.
Search box in regex mode:
To round out these answers, I will add my take for converting each tab to n spaces.
Highlight a tab character
Use CTRL + F2 select all occurrences
Press SPACE n times
This is the easiest way to do this (going beyond only converting leading tabs).
Note that this does not convert consecutive tabs to k spaces. It converts each tab. For consecutive tabs please see my comment on jrupe's answer. You will need VS Code find and replace with regular expressions to accomplish that.
Select Replace: CTRL-H
Enter Horizontal Tab in Find box: hold ATL and type 009 on the keypad.
Enter a space(or more spaces) into the Replace box: press space bar
Press Enter to begin replacing Tabs with Space(s).
Press F1 and then type into textbox convert indentation to spaces or whatever you want ones
On Visual Studio, Ctrl+K+F did the trick for me.
Fast forward to 2020/2021, there are some extensions that will give us that conversion. I have just needed that functionality (hence I found this article), and searching for extensions I found:
geocode.spacecadet - providing both TAB->SPC and SPC->TAB, but not updated since 2017, with 1.3k installs, 3.5 review
takumii.tabspace - TAB->SPC, from 2020, 1.5k installs, no reviews
pygc.spacetab - SPC->TAB, from... wait, literally yesterday! (or today depending on your TZ), 2 installs, no reviews
There is a problem with the formatting of certain .docx files. I click to show the hidden formatting marks. There are degree symbols ("non-breaking spaces") in between many of the words, instead of a regular space.
To solve the problem: I copy and paste the degree symbol, and then I use the "find and replace" function to replace the degree symbols with a regular space.
How do I prevent this problem from occurring in the first place?
Or, how can I automatically convert these symbols to a regular space.
Non-breaking spaces are used to keep words from breaking across lines.
As Cindy stated above, the simplest way to remove them manually is to record a macro and execute this from a Ribbon button or the Quick Access Toolbar.
According to this link (and this link it refers to), nonbreaking spaces are inserted automatically if your proofing language is set to French and you type certain characters. To prevent this from happening, you have to either use a different proofing language or disable the "Replace straight quotes with smart quotes" option. To do this, see below (and I'm quoting the previous link):
To change the proofing language, select the text and click Language on
the Review tab. In addition to choosing another language, it's a good
idea to uncheck the option to automatically detect the language.
To change the quotes replacement, click File > Options > Proofing >
AutoCorrect Options, choose the AutoFormat As You Type tab of the
dialog (not just AutoFormat), and uncheck the first option.
I would like to deal with floral formulae by my DSL coded in groovy, so I need some special symbols such as female sign and Superscripts and Subscripts.
Thanks to the great answers that I found on stackoverflow questions like this now I'm able to
insert special unicode symbols in source code in VIM (MacVim) this way:
CTRL+V. U 2 6 4 0.
However, I would like to be able to do the same in Eclipse IDE (I'm trying to use Groovy/Grails Tool Suite Version: 3.1.0.RELEASE to develop a grails project)
Question: How can I insert in the Eclipse editor a 4 digit unicode symbol by knowing the encoding ( without cut & paste from another source) ?
There appear to be a few ways to get the unicode characters on a Mac. The first few don't appear to be what you want exactly, but included for completeness.
1) Make sure System Preferences->Keyboard "show keyboard & character viewers in menu bar" is selected. Then you can click on that (normally accessible via option+cmd+T, but not in eclipse) to get the Character Viewer. You can then double-click a special character you want and it should insert at cursor.
2) Under the default setup, you should be able to click Option + key to get an alternate character. Use the keyboard viewer from #1 to see what maps to what. Note you can switch to some more mappings using Shift at the same time. This will only get you a subset of unicode characters.
3) From here: Under System Preferences->Languages & Text, go to Input Sources tab. Select the Unicode Hex Input source. You may need to assign switching input sources (under System Prefs->Keyboard->Keyboard Shortcuts->Keyboard) to a hotkey combo (default probably conflicts with spotlight, so change to something else). After that, you should be able to use said hotkey combo to switch to the Unicode Input Source - in that mode, you can hold Option down and enter a hex 4-digit key code, which will result in the character being placed at cursor.
If I have a piece of Code
MyIdentifierIsNice(OtherThingAlsoNice isBetterThen);
I'd like to change the behavior of Ctrl-Left in Eclipse from stopping here:
My|Identifier|Is|Nice|(|Other|Thing|Also|Nice is|Better|Then|);|
to here:
MyIdentifierIsNice(|OtherThingAlsoNice |isBetterThen);|
...or at least just not so often. Other variants would be also fine, like:
MyIdentifierIsNice|(|OtherThingAlsoNice| isBetterThen|);|
Mainly it should stop considering a CamelCaseIdentifier to consist of several words for navigation via Next-Word, and such like.
I use SpringSourceSuite Version 2.5.1, which is Eclipse 3.6, I guess.
Try and unselect the option:
Preferences / Java / Editor / Smart caret positioning in Java names
And see if that enhances the user experience in term of cursor positioning.
If this is not Java, you have a similar option in:
Preferences / General / Editors / Text Editors / Smart caret positioning at line start and end
It is usually selected, meaning if the cursor still stops at every word, that may suggests another setting for a specific language is overriding it.
Coming to Eclipse from XCode, I found the default navigation annoying. In Eclipse, Alt+Left and Alt+Right move to the next camelcase segment, and Ctrl+Left/Right does nothing. In XCode, Alt+Left/Right moves between words and Ctrl+Left/Right moves between camelcase segments. This allows you to control how fine-grained your navigation is.
How I fixed this for myself was by going into Preferences > General > Keys, searching for "Word", and changing the "Next Word" and "Previous Word" bindings from Alt+Left/Right to Ctrl+Left/Right. Then the Alt-navigation is by word and the Ctrl-navigation is by camelcase segment, as in XCode.
I thought this might be useful to some.
Edit:
As I continue to use these new settings, I've found another point:
Although navigation works as advertised, selection has some funky behavior. Namely, Shift+Ctrl+Left/Right can sometimes select large blocks of text instead of just the next camelcase component.
To fix this, again go to Preferences > General > Keys, search for "Select".
Set "Select Next/Previous Word" to Shift+Ctrl+Right/Left.
Unbind "Select Next/Previous Element" (there are three "Whens" to pick from, I unbound all 3).
Voila.
If you want a very simple way to select a entire word without the need to disable smart caret positioning.
You can use at the beginning of word or inside the word:
Shift+Alt+Right
At the end or in the middle of word:
Shift+Alt+Left