Set .SHELLFLAGS to match Posix behaviour

[Shushe] / README.markdown

diff --git a/README.markdown b/README.markdown
index 53427904a72fea844ba0169c5a96ea5f541e1eea..7f5e1df90bd128b3550056f9dc656c7a1a5ff08f 100644 (file)
--- a/README.markdown
+++ b/README.markdown
@@ -181,15 +181,16 @@ In every case, you may supply your own implementation by overriding the
 
 - `awk`
 - `cat`
+- `cd`
 - `cksum`
 - `cp`
 - `date`
+- `diff`
 - `file`
 - `find`
 - `git` (optional; set `GIT=` to disable)
 - `grep`
 - `ln`
-- `ls`
 - `mkdir`
 - `mv`
 - `od`
@@ -303,6 +304,15 @@ The following additional variables can be used to control the behaviour
   The current version of the source files (default: derived from the
     current git tag/branch/commit).
 
+- **`QUIET`:**
+  If this variable has a value, informative messages will not be
+    printed (default: empty).
+  Informative messages print to stderr, not stdout, so disabling them
+    usually shouldn’t be necessary.
+  This does not (cannot) disable messages from Make itself, for which
+    the `-s`, `--silent` ∕ `--quiet` Make option is more likely to be
+    useful.
+
 - **`VERBOSE`:**
   If this variable has a value, every recipe instruction will be
     printed when it runs (default: empty).
@@ -562,10 +572,6 @@ The following params are made available globally in parsers and
 
 - **`SRCTIME`:**
   The time at which the source file was last modified.
-  Due to limitations in Posix, this time will only have minute
-    precision if the file was modified in the last six months, and will
-    only have day precision if the file is older.
-  Users should not expect this value to be particularly stable.
 
 - **`THISREV`:**
   The value of the `THISREV` variable (if present).