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-rw-r--r--lib/stdlib/doc/src/c.xml26
1 files changed, 20 insertions, 6 deletions
diff --git a/lib/stdlib/doc/src/c.xml b/lib/stdlib/doc/src/c.xml
index 55a77d1bc5..7666699183 100644
--- a/lib/stdlib/doc/src/c.xml
+++ b/lib/stdlib/doc/src/c.xml
@@ -52,13 +52,27 @@
<func>
<name name="c" arity="1"/>
<name name="c" arity="2"/>
- <fsummary>Compile and load code in a file.</fsummary>
+ <name name="c" arity="3"/>
+ <fsummary>Compile and load a file or module.</fsummary>
<desc>
- <p>Compiles and then purges and loads the code for a file.
- <c><anno>Options</anno></c> defaults to <c>[]</c>. Compilation is
- equivalent to:</p>
- <code type="none">
-compile:file(<anno>File</anno>, <anno>Options</anno> ++ [report_errors, report_warnings])</code>
+ <p>Compiles and then purges and loads the code for a module.
+ <c><anno>Module</anno></c> can be either a module name or a source
+ file path, with or without <c>.erl</c> extension.
+ <c><anno>Options</anno></c> defaults to <c>[]</c>.</p>
+ <p>If <c><anno>Module</anno></c> is an atom and is not the path of a
+ source file, then the code path is searched to locate the object
+ file for the module and extract its original compiler options and
+ source path. If the source file is not found in the original
+ location, <seealso
+ marker="filelib#find_source/1"><c>filelib:find_source/1</c></seealso>
+ is used to search for it relative to the directory of the object
+ file.</p>
+ <p>The source file is compiled with the the original
+ options appended to the given <c><anno>Options</anno></c>, the
+ output replacing the old object file if and only if compilation
+ succeeds. A function <c><anno>Filter</anno></c> can be specified
+ for removing elements from from the original compiler options
+ before the new options are added.</p>
<p>Notice that purging the code means that any processes
lingering in old code for the module are killed without
warning. For more information, see <c>code/3</c>.</p>