exigrep: fallback to $PATH if zcat is missing. BUG 1575

[exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 9b7ada823fc9ad29c48d0aaf46367cbe3fb121db..bc34d65b8c138e526c81c0b9d50087ddd85dcc1f 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -35713,6 +35713,8 @@ search term.
 If the location of a &'zcat'& command is known from the definition of
 ZCAT_COMMAND in &_Local/Makefile_&, &'exigrep'& automatically passes any file
 whose name ends in COMPRESS_SUFFIX through &'zcat'& as it searches it.
+If the ZCAT_COMMAND is not executable, &'exigrep'& tries to use
+autodetection of some well known compression extensions.
 
 
 .section "Selecting messages by various criteria (exipick)" "SECTexipick"