more doxygen fixes (#1514)

Author: ericniebler

docs/source/conf.py

@@ -73,5 +73,7 @@
 
 breathe_default_project = "stdexec"
 
-def setup(app):
-    app.add_css_file("params.css")
+highlight_language = "cpp"
+
+# def setup(app):
+#     app.add_css_file("params.css")

docs/source/reference/index.rst

@@ -23,6 +23,10 @@ Sender Factories
 
 .. doxygenvariable:: stdexec::read_env
 
+.. doxygenstruct:: exec::just_from_t
+
+.. doxygenvariable:: exec::just_from
+
 Sender Adaptors
 ---------------
 

include/exec/just_from.hpp

@@ -167,12 +167,6 @@ namespace exec {
   //!
   //! @param fn The callable to be invoked when the sender is started.
   //!
-  //! @par Example:
-  //! @code
-  //! // The following sender is equivalent to just(42, 3.14):
-  //! auto sndr = exec::just_from([](auto sink) { return sink(42, 3.14); });
-  //! @endcode
-  //!
   //! @par
   //! The function passed to `just_from` must return an instance of a specialization of
   //! `stdexec::completion_signatures<>` that describes the ways the sink function might be
@@ -182,6 +176,13 @@ namespace exec {
   //!
   //! @par Example:
   //! @code
+  //! // The following sender is equivalent to just(42, 3.14):
+  //! auto sndr = exec::just_from([](auto sink) { return sink(42, 3.14); });
+  //! @endcode
+  //!
+  //! @par Example:
+  //! @code
+  //! // A just_from sender can have multiple completion signatures:
   //! auto sndr = exec::just_from(
   //!   [](auto sink) {
   //!     if (some-condition) {