doc: desc MODULES_SILENT_SHELL_DEBUG in module.1 and NEWS

cea-hpc · Nov 15, 2017 · eafd2c8 · eafd2c8
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diff --git a/NEWS.rst b/NEWS.rst
@@ -38,6 +38,10 @@ Modules 4.1.0 (2017-??-??)
 * Install: add ``--with-quarantine-vars`` configure option to define at build
   time the ``MODULES_RUN_QUARANTINE`` and ``MODULES_RUNENV_<VAR>`` environment
   variables set in initialization scripts.
+* Add ``MODULES_SILENT_SHELL_DEBUG`` environment variable to disable on sh
+  shell and derivatives any ``xtrace`` or ``verbose`` debugging property for
+  the duration of either the module command or the module shell initialization
+  script.
 
 
 Modules 4.0.0 (2017-10-16)

diff --git a/doc/source/module.rst b/doc/source/module.rst
@@ -552,6 +552,13 @@ ENVIRONMENT
  Original values of these environment variables set in quarantine are passed
  to **modulecmd.tcl** via **<VAR>_modquar** variables.
 
+**MODULES_SILENT_SHELL_DEBUG**
+
+ If set to **1**, disable any *xtrace* or *verbose* debugging property set on
+ current shell session for the duration of either the module command or the
+ module shell initialization script. Only applies to Bourne Shell (sh) and its
+ derivatives.
+
 **MODULES_USE_COMPAT_VERSION**
 
  If set to **1** prior to Modules package initialization, enable