From d98dd19c2f0f4a84675d07eff34c641949a40019 Mon Sep 17 00:00:00 2001
From: mitchell <70453897+667e-11@users.noreply.github.com>
Date: Wed, 29 Dec 2010 17:21:04 -0500
Subject: The filter-through module handles selected text as stdin better.

---
 doc/manual/10_Advanced.md | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

(limited to 'doc/manual/10_Advanced.md')

diff --git a/doc/manual/10_Advanced.md b/doc/manual/10_Advanced.md
index 3295110a..74b56ddc 100644
--- a/doc/manual/10_Advanced.md
+++ b/doc/manual/10_Advanced.md
@@ -42,10 +42,16 @@ buffer (or a selection). You could do the following from the command entry:
 A simpler way would be to press `Alt+R` (`Ctrl+Apple+R` on Mac OSX), enter the
 shell command `sort`, and hit `Enter`.
 
-For shell commands, if text is selected, all text on the lines containing the
-selection is used as the standard input (stdin) to the command. Otherwise the
-entire buffer is used. Either the selected text or buffer is replaced with the
-standard output (stdout) of the command.
+The standard input (stdin) for shell commands is determined as follows:
+
+* If text is selected and spans multiple lines, all text on the lines containing
+  the selection is used. However, if the end of the selection is at the
+  beginning of a line, only the EOL (end of line) characters from the previous
+  line are included as input. The rest of the line is excluded.
+* If text is selected and spans a single line, only the selected text is used.
+* If no text is selected, the entire buffer is used.
+
+The input text is replaced with the standard output (stdout) of the command.
 
 ## File Encoding
 
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