add slnx option (#45106)

Author: gewarren

docs/core/project-sdk/msbuild-props-desktop.md

@@ -52,16 +52,16 @@ The following table shows which elements and [globs](https://en.wikipedia.org/wi
 | Element               | Include glob                 | Exclude glob | Remove glob |
 |-----------------------|------------------------------|--------------|-------------|
 | ApplicationDefinition | App.xaml or Application.xaml | N/A          | N/A         |
-| Page                  | \*\*/\*.xaml                 | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln; \*\*/\*.vssscc<br>Any XAML defined by *ApplicationDefinition* | N/A |
+| Page                  | \*\*/\*.xaml                 | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln(x); \*\*/\*.vssscc<br>Any XAML defined by *ApplicationDefinition* | N/A |
 | None                  | N/A                          | N/A          | \*\*/\*.xaml |
 
 Here are the default include and exclude settings for all project types. For more information, see [Default includes and excludes](overview.md#default-includes-and-excludes).
 
 | Element | Include glob | Exclude glob | Remove glob |
 |---------|--------------|--------------|-------------|
-| Compile           | \*\*/\*.cs; \*\*/\*.vb (or other language extensions) | \*\*/\*.user;  \*\*/\*.\*proj;  \*\*/\*.sln;  \*\*/\*.vssscc | N/A |
-| EmbeddedResource  | \*\*/\*.resx | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln; \*\*/\*.vssscc | N/A |
-| None              | \*\*/\* | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln; \*\*/\*.vssscc | \*\*/\*.cs; \*\*/\*.resx |
+| Compile           | \*\*/\*.cs; \*\*/\*.vb (or other language extensions) | \*\*/\*.user;  \*\*/\*.\*proj;  \*\*/\*.sln(x);  \*\*/\*.vssscc | N/A |
+| EmbeddedResource  | \*\*/\*.resx | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln(x); \*\*/\*.vssscc | N/A |
+| None              | \*\*/\* | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln(x); \*\*/\*.vssscc | \*\*/\*.cs; \*\*/\*.resx |
 
 ### Errors related to "duplicate" items
 

docs/core/project-sdk/overview.md

@@ -103,9 +103,9 @@ The following table shows which elements and which [globs](https://en.wikipedia.
 
 | Element | Include glob | Exclude glob | Remove glob |
 |---------|--------------|--------------|-------------|
-| Compile | \*\*/\*.cs (or other language extensions) | \*\*/\*.user;  \*\*/\*.\*proj;  \*\*/\*.sln;  \*\*/\*.vssscc  | N/A |
-| EmbeddedResource  | \*\*/\*.resx | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln; \*\*/\*.vssscc | N/A |
-| None | \*\*/\* | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln; \*\*/\*.vssscc     | \*\*/\*.cs; \*\*/\*.resx |
+| Compile | \*\*/\*.cs (or other language extensions) | \*\*/\*.user;  \*\*/\*.\*proj;  \*\*/\*.sln(x);  \*\*/\*.vssscc  | N/A |
+| EmbeddedResource  | \*\*/\*.resx | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln(x); \*\*/\*.vssscc | N/A |
+| None | \*\*/\* | \*\*/\*.user; \*\*/\*.\*proj; \*\*/\*.sln(x); \*\*/\*.vssscc     | \*\*/\*.cs; \*\*/\*.resx |
 
 > [!NOTE]
 > The `./bin` and `./obj` folders, which are represented by the `$(BaseOutputPath)` and `$(BaseIntermediateOutputPath)` MSBuild properties, are excluded from the globs by default. Excludes are represented by the [DefaultItemExcludes property](msbuild-props.md#defaultitemexcludes).

docs/core/tools/dotnet-migrate.md

@@ -32,7 +32,7 @@ Migration can be performed on the following assets:
 
 * A single project by specifying the *project.json* file to migrate.
 * All of the directories specified in the *global.json* file by passing in a path to the *global.json* file.
-* A *solution.sln* file, where it migrates the projects referenced in the solution.
+* A *solution.sln(x)* file, where it migrates the projects referenced in the solution.
 * On all subdirectories of the given directory recursively.
 
 The `dotnet migrate` command keeps the migrated *project.json* file inside a `backup` directory, which it creates if the directory doesn't exist. This behavior is overridden using the `--skip-backup` option.
@@ -49,7 +49,7 @@ The path to one of the following:
 
 * a *project.json* file to migrate.
 * a *global.json* file: the folders specified in *global.json* are migrated.
-* a *solution.sln* file: the projects referenced in the solution are migrated.
+* a *solution.sln(x)* file: the projects referenced in the solution are migrated.
 * a directory to migrate: recursively searches for *project.json* files to migrate inside the specified directory.
 
 Defaults to current directory if nothing is specified.

docs/core/tools/dotnet-publish.md

@@ -120,7 +120,7 @@ For more information, see the following resources:
 
   * `PROJECT` is the path and filename of a C#, F#, or Visual Basic project file, or the path to a directory that contains a C#, F#, or Visual Basic project file. If the directory is not specified, it defaults to the current directory.
 
-  * `SOLUTION` is the path and filename of a solution file (*.sln* extension), or the path to a directory that contains a solution file. If the directory is not specified, it defaults to the current directory.
+  * `SOLUTION` is the path and filename of a solution file (*.sln* or *.slnx* extension), or the path to a directory that contains a solution file. If the directory is not specified, it defaults to the current directory.
 
 ## Options