Genex: Teach SHELL_PATH to support a list of paths

Extend the genex added by commit ca6ba3fee5 (Genex: Add a SHELL_PATH
expression, 2015-09-24, v3.4.0-rc1~37^2) to accept a `;`-list of paths,
convert them all, and generate a list separated by the native shell
`PATH``` separator.

2 files changed, 10 insertions, 0 deletions

diff --git a/Help/manual/cmake-generator-expressions.7.rst b/Help/manual/cmake-generator-expressions.7.rst
index 7f484a4..614358a 100644
--- a/Help/manual/cmake-generator-expressions.7.rst
+++ b/Help/manual/cmake-generator-expressions.7.rst
@@ -455,6 +455,11 @@ Output-Related Expressions
   Content of ``...`` converted to shell path style. For example, slashes are
   converted to backslashes in Windows shells and drive letters are converted
   to posix paths in MSYS shells. The ``...`` must be an absolute path.
+  The ``...`` may be a :ref:`semicolon-separated list <CMake Language Lists>`
+  of paths, in which case each path is converted individually and a result
+  list is generated using the shell path separator (``:`` on POSIX and
+  ``;`` on Windows).  Be sure to enclose the argument containing this genex
+  in double quotes in CMake source code so that ``;`` does not split arguments.
 
 Debugging
 =========
diff --git a/Help/release/dev/shell_path.rst b/Help/release/dev/shell_path.rst
new file mode 100644
index 0000000..e8ebfb5
--- /dev/null
+++ b/Help/release/dev/shell_path.rst
@@ -0,0 +1,5 @@
+shell_path
+----------
+
+* The ``$<SHELL_PATH:...>`` :manual:`generator expression
+  <cmake-generator-expressions(7)>` gained support for a list of paths.