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-rw-r--r--appendixa/gettext-desc.xml3
1 files changed, 3 insertions, 0 deletions
diff --git a/appendixa/gettext-desc.xml b/appendixa/gettext-desc.xml
index 8d6495c42..13bb64745 100644
--- a/appendixa/gettext-desc.xml
+++ b/appendixa/gettext-desc.xml
@@ -12,6 +12,9 @@ character encoding aliases.</para>
variables, describing how to set the runtime search path of shared libraries in an
executable.</para>
+<para><command>envsubst</command> substitutes environment variables in shell
+format strings.</para>
+
<para><command>gettext</command> translates a natural language message into
the user's language, by looking up the translation in a message catalog.</para>