Add EXTRA* variables

[Shushe] / README.markdown

diff --git a/README.markdown b/README.markdown
index 0941b52095f1609285389d7663537562abfa57d6..654904ae9eda3ab787fbdc83dc7b001778f5ffda 100644 (file)
--- a/README.markdown
+++ b/README.markdown
@@ -1,6 +1,6 @@
 # ⛩️📰 书社
 
 # ⛩️📰 书社
 

-<b>An X·S·L·T‐based static site generator.</b>
+<b>A make·file for X·M·L.</b>

 
 <dfn>⛩️📰 书社</dfn> aims to make it easy to generate websites with
   X·S·L·T and G·N·U Make.
 
 <dfn>⛩️📰 书社</dfn> aims to make it easy to generate websites with
   X·S·L·T and G·N·U Make.


@@ -18,6 +18,15 @@ It makes things easier by :⁠—
 
 It aims to do this with zero dependencies beyond the programs already
   installed on your computer.
 
 It aims to do this with zero dependencies beyond the programs already
   installed on your computer.

+(On Linux machines, you may need to install `libxml2-utils` to get the
+  commandline programs from `libxml2`.)
+
+**Note:**
+⛩️📰 书社 requires functionality present in G·N·U Make 3.81 (or later)
+  and will not work in previous versions, or other implementations of
+  Make.
+Compatibility with later versions of G·N·U Make is assumed, but not
+  tested.

 
 ## Nomenclature
 
 
 ## Nomenclature
 


@@ -164,18 +173,35 @@ The following additional variables can be used to control the behaviour
     and those which contain a hash, buck, percent, asterisk, colon,
     semi, eroteme, bracket, backslash, or pipe.
 
     and those which contain a hash, buck, percent, asterisk, colon,
     semi, eroteme, bracket, backslash, or pipe.
 

+- **`EXTRAFINDRULES`:**
+  The value of this variable is appended to `FINDRULES` by default, to
+    enable additional rules without overriding the existing ones.
+

 - **`FINDINCLUDERULES`:**
   Rules to use with `find` when searching for includes (default:
     `$(FINDRULES)`).
 
 - **`FINDINCLUDERULES`:**
   Rules to use with `find` when searching for includes (default:
     `$(FINDRULES)`).
 

+- **`EXTRAFINDINCLUDERULES`:**
+  The value of this variable is appended to `FINDINCLUDERULES` by
+    default, to enable additional rules without overriding the existing
+    ones.
+

 - **`PARSERS`:**
   A white·space‐separated list of parsers to use (default:
     `$(THISDIR)/parsers/*.xslt`).
 
 - **`PARSERS`:**
   A white·space‐separated list of parsers to use (default:
     `$(THISDIR)/parsers/*.xslt`).
 

+- **`EXTRAPARSERS`:**
+  The value of this variable is appended to `PARSERS` by default, to
+    enable additional parsers without overriding the existing ones.
+

 - **`TRANSFORMS`:**
   A white·space‐separated list of transforms to use (default:
     `$(THISDIR)/transforms/*.xslt`).
 
 - **`TRANSFORMS`:**
   A white·space‐separated list of transforms to use (default:
     `$(THISDIR)/transforms/*.xslt`).
 

+- **`EXTRATRANSFORMS`:**
+  The value of this variable is appended to `TRANSFORMS` by default, to
+    enable additional transforms without overriding the existing ones.
+

 - **`XMLTYPES`:**
   A white·space‐separated list of media types to consider X·M·L
     (default: `application/xml text/xml`).
 - **`XMLTYPES`:**
   A white·space‐separated list of media types to consider X·M·L
     (default: `application/xml text/xml`).


@@ -462,4 +488,4 @@ Source files are licensed under the terms of the <cite>Mozilla Public
   License, version 2.0</cite>.
 For more information, see [LICENSE](./LICENSE).
 
   License, version 2.0</cite>.
 For more information, see [LICENSE](./LICENSE).
 

-[draft-phillips-record-jar-01]: <https://datatracker.ietf.org/doc/html/draft-phillips-record-jar-01>
\ No newline at end of file
+[draft-phillips-record-jar-01]: <https://datatracker.ietf.org/doc/html/draft-phillips-record-jar-01>