Confirm merge from FromPublicMasterBranch to main to sync with https://github.com/MicrosoftDocs/cpp-docs (branch main) (#4843) (#4844)

* Update wctomb-s-wctomb-s-l.md

Adding another possible error return.  I'm not sure of the document syntax though.

* Update 'Connect to your target Linux system in Visual Studio'.

Clearly state that Windows' default `ssh-keygen` does not
produce valid private keys for use with ConnectionManager/VS,
including steps to adjust private keys to conform with it.

* Update wctomb-s-wctomb-s-l.md

Added a link.

* Update wctomb-s-wctomb-s-l.md

Added code escape so machine translation doesn't modify EILSEQ

---------

Co-authored-by: learn-build-service-prod[bot] <113403604+learn-build-service-prod[bot]@users.noreply.github.com>
Co-authored-by: huypub <[email protected]>
Co-authored-by: Edward Breeveld <[email protected]>
Co-authored-by: Fran Kelava <[email protected]>
Co-authored-by: Tyler Whitney <[email protected]>
Co-authored-by: Jak Koke <[email protected]>

Author: 7 people

docs/c-runtime-library/reference/wctomb-s-wctomb-s-l.md

@@ -44,7 +44,7 @@ The address of a multibyte character.
 Size of the buffer *`mbchar`*.
 
 *`wchar`*\
-A wide character.
+The wide character to convert.
 
 *`locale`*\
 The locale to use.
@@ -60,9 +60,11 @@ Error Conditions
 | `NULL` | >0 | `EINVAL` | not modified |
 | any | >`INT_MAX` | `EINVAL` | not modified |
 | any | too small | `EINVAL` | not modified |
-
+ 
 If any of the above error conditions occurs, the invalid parameter handler is invoked, as described in [Parameter validation](../parameter-validation.md). If execution is allowed to continue, `wctomb` returns `EINVAL` and sets `errno` to `EINVAL`.
 
+The return value [`EILSEQ`](../errno-constants.md) indicates that the value passed via the parameter `wchar` is not a valid wide character.
+
 ## Remarks
 
 The **`wctomb_s`** function converts its *`wchar`* argument to the corresponding multibyte character and stores the result at *`mbchar`*. You can call the function from any point in any program.

docs/linux/connect-to-your-remote-linux-computer.md

@@ -83,6 +83,9 @@ If `ssh` isn't already set up and running on your Linux system, follow these ste
    | **Passphrase** | Passphrase used with private key selected above |
 
    You can use either a password or a key file and passphrase for authentication. For many development scenarios, password authentication is sufficient, but key files are more secure. If you already have a key pair, it's possible to reuse it. Currently Visual Studio only supports RSA and DSA keys for remote connections.
+   
+   > [!NOTE]
+   > If using `ssh-keygen` to create the private key, you must specify the switch `-m pem`, or the key will not be accepted by Visual Studio. If your private key begins with `-----BEGIN OPENSSH PRIVATE KEY-----`, you must convert it with `ssh-keygen -p -f <FILE> -m pem`. 
 
 1. Choose the **Connect** button to attempt a connection to the remote computer.