Clarify docs around @filename and leading/trailing space

1 files changed, 2 insertions, 1 deletions

diff --git a/qpdf/qpdf.cc b/qpdf/qpdf.cc
index c336455b..c363c087 100644
--- a/qpdf/qpdf.cc
+++ b/qpdf/qpdf.cc
@@ -1340,7 +1340,8 @@ ArgParser::argHelp()
         << "\n"
         << "If @filename appears anywhere in the command-line, each line of filename\n"
         << "will be interpreted as an argument. No interpolation is done. Line\n"
-        << "terminators are stripped. @- can be specified to read from standard input.\n"
+        << "terminators are stripped, but leading and trailing whitespace is\n"
+        << "intentionally preserved. @- can be specified to read from standard input.\n"
         << "\n"
         << "The output file can be - to indicate writing to standard output, or it can\n"
         << "be --replace-input to cause qpdf to replace the input file with the output.\n"