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-rw-r--r--runtime/tools/ccfilter_README.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/runtime/tools/ccfilter_README.txt b/runtime/tools/ccfilter_README.txt
index 3c12a8c89b..ea989f2574 100644
--- a/runtime/tools/ccfilter_README.txt
+++ b/runtime/tools/ccfilter_README.txt
@@ -1,3 +1,13 @@
+READ THIS FIRST
+===============
+
+ccfilter is a C program to filter the output of a few compilers to a common
+QuickFix format. It is provided with Vim to make quickfix useful for more
+compilers.
+
+ccfilter WILL FAIL with long lines (more than 2047 bytes).
+
+
COMPILING AND INSTALLING:
=========================