Fixed some typos and little tweaks (#4249)

* Fixed some typos and little tweaks

* Split MyPath

Author: perseoGI

reference/commands/config.rst

@@ -101,6 +101,12 @@ You can force certain files to be copied over by using the ``!`` negation syntax
 
       $ conan config install http://github.com/user/conan_config/.git --type git
 
+- Install the configuration from a specific Git branch:
+
+  .. code-block:: text
+
+      $ conan config install http://github.com/user/conan_config/.git --args="--branch mybranch"
+
 - Install from a URL skipping SSL verification:
 
   .. code-block:: text
@@ -144,7 +150,7 @@ The packages containing configuration follow some special rules:
 - They cannot contain ``requires`` to other packages
 - The configuration packages are created with ``conan create`` and ``conan export-pkg`` as other packages, and uploaded to the servers with ``conan upload``
 
-To install configuration from a Conan configuration package, it is possible:
+To install a configuration from a Conan configuration package, it is possible:
 
 - To generate a lockfile file with ``--lockfile-out``. This lockfile file can be passed to ``conan config install-pkg --lockfile`` (it will automatically loaded it if is named ``conan.lock`` and found in the current directory) in the future to guarantee the same exact version.
 - Version ranges can be used ``conan config install-pkg "myconf/[>=1.0 <2]"`` is correct, and it will install the latest one in that range.
@@ -189,7 +195,7 @@ And if they had a layout with different ``global.conf`` for the different platfo
     nix/global.conf
 
 
-They, they could create and upload their configuration package as:
+They could create and upload their configuration package as:
 
 .. code-block:: bash
 

reference/config_files/profiles.rst

@@ -285,8 +285,8 @@ the prefix of the variable. It is useful to automatically get the append/prepend
     # Prepend another PATH to "MyPath1"
     MyPath1=+(path)/other path/path12
 
-    # Unset the variable "MyPath1"
-    MyPath1=!
+    # Unset the variable "MyPath2"
+    MyPath2=!
 
 
 Then, the result of applying this profile is:
@@ -295,7 +295,7 @@ Then, the result of applying this profile is:
 * ``MyPath1``:
     * Unix: ``/other path/path12:/some/path11``
     * Windows: ``/other path/path12;/some/path11``
-* ``mypkg*:PATH``: ``None``
+* ``MyPath2``: if system environment had defined ``MyPath2``, this will be unset by Conan
 
 .. warning::
 
@@ -309,6 +309,17 @@ Then, the result of applying this profile is:
 
    - This section allows to use patterns to limit which packages are affected by the buildenv. See :ref:`this section <reference_config_files_profile_patterns>` for more details.
 
+   For example:
+
+   .. code-block:: text
+
+       [buildenv]
+       MyPath=MyValue
+       mypkg/*:MyPath=MyOtherValue
+
+   This will result in ``MyPath=MyValue`` for all the packages, and ``MyPath=MyOtherValue`` only for the ``mypkg`` package.
+
+
 
 .. _reference_config_files_profiles_runenv:
 
@@ -653,7 +664,7 @@ Some of the capabilities of the profile templates are:
   .. code-block:: jinja
      :caption: *profile_vars*
 
-     {% set version = subprocess.check_output(['clang++', "-dumpversion]).strip() %}
+     {% set version = subprocess.check_output(['clang++', "-dumpversion"]).strip() %}
      [settings]
      compiler.version={{ version }}
 

reference/config_files/settings.rst

@@ -153,7 +153,8 @@ Here you can find a brief explanation of each of the architectures defined as ``
 - **asm.js**: The subset of JavaScript that can be used as low-level target for compilers, not really a processor architecture, it's produced
   by Emscripten. Conan treats it as an architecture to align with build systems design (e.g. GNU auto tools and CMake).
 - **wasm**: The Web Assembly, not really a processor architecture, but byte-code format for Web, it's produced by Emscripten. Conan treats it
-  as an architecture to align with build systems design (e.g. GNU auto tools and CMake).
+  as an architecture to align with build systems design (e.g. GNU auto tools, CMake, etc).
+- **wasm64**: The Web Assembly 64 bit, same as **wasm** but for 64 bit. Conan will add the necessary flags to the compiler to produce 64 bit Web Assembly code.
 - **sh4le**: The Hitachi SH-4 SuperH architecture.
 - **e2k-v2**: The Elbrus 2000 v2 512 bit VLIW (Very Long Instruction Word) architecture (Elbrus 2CM, Elbrus 2C+ CPUs) originally developed by MCST (Moscow Center of SPARC Technologies).
 - **e2k-v3**: The Elbrus 2000 v3 512 bit VLIW (Very Long Instruction Word) architecture (Elbrus 2S, aka Elbrus 4C, CPU) originally developed by MCST (Moscow Center of SPARC Technologies).
@@ -172,17 +173,17 @@ C++ standard libraries (aka compiler.libcxx)
 ``compiler.libcxx`` sub-setting defines C++ standard libraries implementation to be used. The sub-setting applies only to certain compilers,
 e.g. it applies to *clang*, *apple-clang* and *gcc*, but doesn't apply to *Visual Studio*.
 
-- **libstdc++** (gcc, clang, apple-clang, sun-cc): `The GNU C++ Library <https://gcc.gnu.org/onlinedocs/libstdc++/>`__. NOTE that this implicitly
+- **libstdc++** (gcc, clang, apple-clang, sun-cc, intel-cc, mcst-lcc, emcc): `The GNU C++ Library <https://gcc.gnu.org/onlinedocs/libstdc++/>`__. NOTE that this implicitly
   defines **_GLIBCXX_USE_CXX11_ABI=0** to use old ABI. Might be a wise choice for old systems, such as CentOS 6. On Linux systems,
   you may need to install `libstdc++-dev <https://packages.debian.org/sid/libstdc++-dev>`_ (package name could be different in various distros)
   in order to use the standard library. NOTE that on Apple systems usage of **libstdc++** has been deprecated.
 
-- **libstdc++11** (gcc, clang, apple-clang): `The GNU C++ Library <https://gcc.gnu.org/onlinedocs/libstdc++/>`__. NOTE that this implicitly
+- **libstdc++11** (gcc, clang, intel-cc, mcst-lcc, emcc): `The GNU C++ Library <https://gcc.gnu.org/onlinedocs/libstdc++/>`__. NOTE that this implicitly
   defines **_GLIBCXX_USE_CXX11_ABI=1** to use new ABI. Might be a wise choice for newer systems, such as Ubuntu 20. On Linux systems,
   you may need to install `libstdc++-dev <https://packages.debian.org/sid/libstdc++-dev>`_ (package name could be different in various distros)
   in order to use the standard library. NOTE that on Apple systems usage of **libstdc++** has been deprecated.
 
-- **libc++** (clang, apple-clang): `LLVM libc++ <https://libcxx.llvm.org/>`__. On Linux systems, you may need to install `libc++-dev <https://packages.debian.org/sid/libc++-dev>`_
+- **libc++** (clang, apple-clang, intel-cc, emcc): `LLVM libc++ <https://libcxx.llvm.org/>`__. On Linux systems, you may need to install `libc++-dev <https://packages.debian.org/sid/libc++-dev>`_
   (package name could be different in various distros) in order to use the standard library.
 
 - **c++_shared** (clang, Android only): use `LLVM libc++ <https://libcxx.llvm.org/>`__ as a shared library. Refer to the `C++ Library Support <https://developer.android.com/ndk/guides/cpp-support>`__ for the