Make generator metadata more easy to override

[Shushe] / README.markdown

diff --git a/README.markdown b/README.markdown
index e2838fad0204817504137d83002e34ca4f0b528e..573fb86e51fe59b89c2ac7586986d5a23330c71b 100644 (file)
--- a/README.markdown
+++ b/README.markdown
@@ -213,6 +213,17 @@ The following additional variables can be used to control the behaviour
   A white·space‐separated list of media types to consider X·M·L
     (default: `application/xml text/xml`).
 
+- **`GENERATOR`:**
+  The name of the generator program (default: `⛩️📰 书社`).
+
+- **`VERSION`:**
+  The current version of `GENERATOR` (default: derived from the current
+    git tag/branch/commit).
+
+- **`SRCREV`:**
+  The current version of the source files (default: derived from the
+    current git tag/branch/commit).
+
 - **`VERBOSE`:**
   If this variable has a value, every recipe instruction will be
     printed when it runs (default: empty).
@@ -420,16 +431,17 @@ The following params are made available globally in parsers and
 - **`BUILDTIME`:**
   The current time.
 
+- **`GENERATOR`:**
+  The value of the `GENERATOR` variable (if present).
+
 - **`SRCREV`:**
-  The tag or hash of the current commit in the working directory (if
-    `GIT` is defined and `./.git` exists).
+  The value of the `SRCREV` variable (if present).
 
 - **`SRCTIME`:**
   The time at which the source file was last modified.
 
 - **`VERSION`:**
-  The tag or hash of the current commit in `THISDIR` (if `GIT` is
-    defined and `$(THISDIR)/.git` exists).
+  The value of the `VERSION` variable (if present).
 
 The following params are only available in transforms :⁠—