Remove variation selectors from sigil

[Shushe] / README.markdown

diff --git a/README.markdown b/README.markdown
index 5457ce763994785c2029d58162d4b68e25ebf1a7..bed7a115a4f5fa6a1db7ab165669523d07e872f8 100644 (file)
--- a/README.markdown
+++ b/README.markdown
@@ -2,11 +2,11 @@
 SPDX-FileCopyrightText: 2024 Lady <https://www.ladys.computer/about/#lady>
 SPDX-License-Identifier: CC0-1.0
 -->
 SPDX-FileCopyrightText: 2024 Lady <https://www.ladys.computer/about/#lady>
 SPDX-License-Identifier: CC0-1.0
 -->

-# ⛩️📰 书社
+# ⛩📰 书社

 
 <b>A make·file for X·M·L.</b>
 
 
 <b>A make·file for X·M·L.</b>
 

-<dfn>⛩️📰 书社</dfn> aims to make it easy to generate websites with
+<dfn>⛩📰 书社</dfn> aims to make it easy to generate websites with

   X·S·L·T and G·N·U Make.
 It is consequently only a good choice for people who like X·S·L·T and
   G·N·U Make and wish it were easier to make websites with them.
   X·S·L·T and G·N·U Make.
 It is consequently only a good choice for people who like X·S·L·T and
   G·N·U Make and wish it were easier to make websites with them.


@@ -21,16 +21,12 @@ It makes things easier by :⁠—
 - Enabling easy inclusion of source files within each other.
 
 It aims to do this with zero dependencies beyond the programs already
 - Enabling easy inclusion of source files within each other.
 
 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`.)
+  installed on your computer†.

 
 

-**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.
+† Assuming an operating system with a fairly featureful, and
+  Posix‐compliant, development setup (e·g, Macintosh ≥ version 10.8).
+In fact, on Linux you will probably need to install a few programs:
+  `libxml2-utils`, `xsltproc`, `sharutils`, and `pax`.

 
 ## Nomenclature
 
 
 ## Nomenclature
 


@@ -49,37 +45,129 @@ In Japanese, it is an alternate spelling for <i lang="ja">やしろ</i>,
 The name <i lang="cmn-Hans">书社</i> was chosen to play on this pun, as
   it is intended as a publishing program for webshrines.
 
 The name <i lang="cmn-Hans">书社</i> was chosen to play on this pun, as
   it is intended as a publishing program for webshrines.
 

-In Ascii environments, ⛩️📰 书社 should be written `Shushe`, following
+In Ascii environments, ⛩📰 书社 should be written `Shushe`, following

   the pinyin transliteration.
 
   the pinyin transliteration.
 

+## Prerequisites
+
+In most cases, ⛩📰 书社 aims to require only functionality which is
+  present in all Posix‐compliant (`POSIX.1-2001`) operating systems.
+There are a few exceptions.
+Details on particular programs are given below; if a program is not
+  listed, it is assumed that any Posix‐compliant implementation will
+  work.
+
+### `diff`
+
+This is a Posix utility, but ⛩📰 书社 depends on functionality
+  introduced after `POSIX.1-2001` (the `-u` option, introduced in
+  `POSIX.1-2008`).
+Macintosh systems somewhat interestingly implement this option
+  correctly in legacy mode (`COMMAND_MODE=legacy`) but incorrectly by
+  default (despite claiming `POSIX.1-2008` conformance for this
+  utility).
+[Note this erroneous comment claiming nanosecond & timezone are
+  extensions rather than standardized.][rdar-92753335]
+Despite this, the default Macintosh implementation will still work with
+  ⛩📰 书社, with the caveat that the timestamp will only include a
+  fractional component when a Posix⹀compliant (e·g, Macintosh legacy or
+  G·N·U) implementation is used.
+
+### `file`
+
+This is a Posix utility, but it was considered optional in
+  `POSIX.1-2001` (altho it was made mandatory in `POSIX.1-2008`) and
+  ⛩📰 书社 currently depends on unspecified behaviour.
+It requires support for the following additional options :⁠—
+
+- **`-C`**, when supplied with `-m`, must be useable to compile a
+    `.mgc` magicfile for use with future invocations of `file`.
+
+- **`--files-from`** must be useable to provide a file that `file`
+    should read file·names from, and `-` must be useable in this
+    context to specify the standard input.
+
+- **`--mime-type`** must cause `file` to print the internet media type
+    of the file with no charset parameter.
+
+- **`--separator`** must be useable to set the separator that `file`
+    uses to separate file names from types.
+
+These options are implemented by the
+  [Fine Free File Command](https://darwinsys.com/file/), which is used
+  by most operating systems.
+
+### `git`
+
+This is not a Posix utility.
+Usage of `git` is optional, but recommended (and activated by default).
+To disable it, set `GIT=`.
+
+### `make`
+
+This is a Posix utility, but it is considered an optional Software
+  Development utility and ⛩📰 书社 currently depends on unspecified
+  behaviour.
+⛩📰 书社 requires specifically the G·N·U version of `make`, and
+  depends on functionality present in version 3.81 or later.
+It is not expected to work in previous versions, or with other
+  implementations of Make.
+
+### `pax`
+
+This is a Posix utility, but it is not included in the Linux Standard
+  Base or installed by default in many distributions.
+⛩📰 书社 only requires support for the `ustar` format.
+
+### `uudecode` and `uuencode`
+
+These are Posix utilities, but they were considered optional in
+  `POSIX.1-2001` (altho they are made mandatory in `POSIX.1-2008`) and
+  they are not included in the Linux Standard Base or installed by
+  default in many distributions.
+The G·N·U [Sharutils](https://www.gnu.org/software/sharutils/) package
+  provides one implementation.
+
+### `xmlcatalog` and `xmllint`
+
+These are not a Posix utilities.
+They are a part of `libxml2`, but may need to be installed separately
+  on some platforms (e·g by the name `libxml2-utils`).
+
+### `xsltproc`
+
+This is not a Posix utility.
+It is a part of `libxslt`, but may need to be installed separately on
+  some platforms.
+

 ## Basic Usage
 
 Place source files in `sources/` and run `make install` to compile
   the result to `public/`.
 Compilation involves the following steps :⁠—
 
 ## Basic Usage
 
 Place source files in `sources/` and run `make install` to compile
   the result to `public/`.
 Compilation involves the following steps :⁠—
 

-1. ⛩️📰 书社 compiles all of the magic files in `magic/` into a single
+1. ⛩📰 书社 compiles all of the magic files in `magic/` into a single

     file, `build/magic.mgc`.
 
     file, `build/magic.mgc`.
 

-2. ⛩️📰 书社 processes all of the parsers in `parsers/` and determines
+2. ⛩📰 书社 processes all of the parsers in `parsers/` and determines

     the list of supported plaintext types.
 
     the list of supported plaintext types.
 

-3. ⛩️📰 书社 identifies all of the source files and includes and uses
+3. ⛩📰 书社 identifies all of the source files and includes and uses

     `build/magic.mgc` to classify them by media type.
 
     `build/magic.mgc` to classify them by media type.
 

-4. ⛩️📰 书社 parses all plaintext and X·M·L source files and includes
+4. ⛩📰 书社 parses all plaintext and X·M·L source files and includes

     and then builds a dependency tree between them.
 
     and then builds a dependency tree between them.
 

-5. ⛩️📰 书社 uses the dependency tree to establish prerequisites for
+5. ⛩📰 书社 uses the dependency tree to establish prerequisites for

     each output file.
 
     each output file.
 

-6. ⛩️📰 书社 compiles each output file to `build/result`.
+6. ⛩📰 书社 compiles each output file to `build/result`.

 
 

-7. ⛩️📰 书社 copies most output files from `build/result` to
+7. ⛩📰 书社 copies most output files from `build/result` to

      `build/public`, but it does some additional processing instead on
      those which indicate a non‐X·M·L desired final output form.
 
      `build/public`, but it does some additional processing instead on
      those which indicate a non‐X·M·L desired final output form.
 

-8. ⛩️📰 书社 copies the final resulting files to `public`.
+8. ⛩📰 书社 copies the final resulting files to `public`.

 
 You can use `make list` to list each identified source file or include
   alongside its computed type and dependencies.
 
 You can use `make list` to list each identified source file or include
   alongside its computed type and dependencies.


@@ -89,7 +177,7 @@ As this is a Make‐based program, steps will only be run if the
 
 ## Name·spaces
 
 
 ## Name·spaces
 

-The ⛩️📰 书社 name·space is `urn:fdc:ladys.computer:20231231:Shu1She4`.
+The ⛩📰 书社 name·space is `urn:fdc:ladys.computer:20231231:Shu1She4`.

 
 This document uses a few name·space prefixes, with the following
   meanings :⁠—
 
 This document uses a few name·space prefixes, with the following
   meanings :⁠—


@@ -107,43 +195,43 @@ This document uses a few name·space prefixes, with the following
 
 ## Setup and Configuration
 
 
 ## Setup and Configuration
 

-⛩️📰 书社 depends on the following programs to run.
+⛩📰 书社 depends on the following programs to run.

 In every case, you may supply your own implementation by overriding the
   corresponding (allcaps) variable (e·g, set `MKDIR` to supply your own
   `mkdir` implementation).
 
 - `awk`
 - `cat`
 In every case, you may supply your own implementation by overriding the
   corresponding (allcaps) variable (e·g, set `MKDIR` to supply your own
   `mkdir` implementation).
 
 - `awk`
 - `cat`

+- `cd`

 - `cksum`
 - `cp`
 - `date`
 - `cksum`
 - `cp`
 - `date`

-- `echo`
+- `diff`

 - `file`
 - `find`
 - `git` (optional; set `GIT=` to disable)
 - `grep`
 - `ln`
 - `file`
 - `find`
 - `git` (optional; set `GIT=` to disable)
 - `grep`
 - `ln`

-- `mkdir` (requires support for `-p`)
+- `mkdir`

 - `mv`
 - `mv`

-- `od` (requires support for `-t x1`)
+- `od`

 - `pax` (only when generating archives)
 - `printf`
 - `rm`
 - `sed`
 - `sleep`
 - `pax` (only when generating archives)
 - `printf`
 - `rm`
 - `sed`
 - `sleep`

-- `stat` (BSD *or* GNU)

 - `test`
 - `touch`
 - `test`
 - `touch`

-- `tr` (requires support for `-d`)
-- `uuencode` (requires support for `-m` and `-r`)
-- `uudecode` (requires support for `-m` and `-r`)
-- `xargs` (requires support for `-0`)
+- `tr`
+- `uuencode`
+- `uudecode`
+- `xargs`

 - `xmlcatalog` (provided by `libxml2`)
 - `xmllint` (provided by `libxml2`)
 - `xsltproc` (provided by `libxslt`)
 
 The following additional variables can be used to control the behaviour
 - `xmlcatalog` (provided by `libxml2`)
 - `xmllint` (provided by `libxml2`)
 - `xsltproc` (provided by `libxslt`)
 
 The following additional variables can be used to control the behaviour

-  of ⛩️📰 书社 :⁠—
+  of ⛩📰 书社 :⁠—

 
 - **`SRCDIR`:**
   The location of the source files (default: `sources`).
 
 - **`SRCDIR`:**
   The location of the source files (default: `sources`).


@@ -159,7 +247,7 @@ The following additional variables can be used to control the behaviour
 - **`BUILDDIR`:**
   The location of the (temporary) build directory (default: `build`).
   `make clean` will delete this, and it is recommended that it not be
 - **`BUILDDIR`:**
   The location of the (temporary) build directory (default: `build`).
   `make clean` will delete this, and it is recommended that it not be

-    used for programs aside from ⛩️📰 书社.
+    used for programs aside from ⛩📰 书社.

 
 - **`DESTDIR`:**
   The location of directory to output files to (default: `public`).
 
 - **`DESTDIR`:**
   The location of directory to output files to (default: `public`).


@@ -175,10 +263,10 @@ The following additional variables can be used to control the behaviour
     ensure stale content is removed.
 
 - **`THISDIR`:**
     ensure stale content is removed.
 
 - **`THISDIR`:**

-  The location of the ⛩️📰 书社 `GNUmakefile`.
+  The location of the ⛩📰 书社 `GNUmakefile`.

   This should be set automatically when calling Make and shouldn’t ever
     need to be set manually.
   This should be set automatically when calling Make and shouldn’t ever
     need to be set manually.

-  This variable is used to find the ⛩️📰 书社 `lib/` folder, which is
+  This variable is used to find the ⛩📰 书社 `lib/` folder, which is

     expected to be in the same location.
 
 - **`MAGIC`:**
     expected to be in the same location.
 
 - **`MAGIC`:**


@@ -195,6 +283,8 @@ The following additional variables can be used to control the behaviour
     those which end with a cloparen, and those which contain a hash,
     buck, percent, asterisk, colon, semi, eroteme, bracket, backslash,
     or pipe.
     those which end with a cloparen, and those which contain a hash,
     buck, percent, asterisk, colon, semi, eroteme, bracket, backslash,
     or pipe.

+  It is important that these rules not produce any output, as anything
+    printed to `stdout` will be considered a result of the find.

 
 - **`EXTRAFINDRULES`:**
   The value of this variable is appended to `FINDRULES` by default, to
 
 - **`EXTRAFINDRULES`:**
   The value of this variable is appended to `FINDRULES` by default, to


@@ -226,17 +316,31 @@ The following additional variables can be used to control the behaviour
     enable additional transforms without overriding the existing ones.
 
 - **`XMLTYPES`:**
     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`).
+  A white·space‐separated list of media types or media type suffixes to
+    consider X·M·L (default: `application/xml text/xml +xml`).
+
+- **`FINALIZE`:**
+  A program to run on (unspecial) X·M·L files after they are
+    transformed (default: `xmllint --nonet --nsclean`).
+  This variable can be used for postprocessing.

 
 - **`THISREV`:**
 
 - **`THISREV`:**

-  The current version of ⛩️📰 书社 (default: derived from the current
+  The current version of ⛩📰 书社 (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).
 
     git tag/branch/commit).
 
 - **`SRCREV`:**
   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).
 - **`VERBOSE`:**
   If this variable has a value, every recipe instruction will be
     printed when it runs (default: empty).


@@ -269,11 +373,11 @@ Source files whose media type does not have an associated X·S·L·T
   contain Ascii white·space, colons (`:`), semis (`;`), pipes (`|`),
   bucks (`$`), percents (`%`), hashes (`#`), asterisks (`*`), brackets
   (`[` or `]`), erotemes (`?`), backslashes (`\`), or control
   contain Ascii white·space, colons (`:`), semis (`;`), pipes (`|`),
   bucks (`$`), percents (`%`), hashes (`#`), asterisks (`*`), brackets
   (`[` or `]`), erotemes (`?`), backslashes (`\`), or control

-  characters, must not begin with a hyphen‐minus (`-`), and must not
-  end with a cloparen (`)`).**
+  characters, must not begin with a hyphen‐minus (`-`), and must not end
+  with a cloparen (`)`).**

 The former characters have the potential to conflict with make syntax,
 The former characters have the potential to conflict with make syntax,

-  a leading hyphen‐minus is confusable for a command‐line argument, and
-  a trailing cloparen [activates a bug in G·N·U Make
+  a leading hyphen‐minus is confusable for a commandline argument, and a
+  trailing cloparen [activates a bug in G·N·U Make

   3.81](https://stackoverflow.com/questions/17148468/capturing-filenames-including-parentheses-with-gnu-makes-wildcard-function#comment24825307_17148894).
 
 ## Parsers
   3.81](https://stackoverflow.com/questions/17148468/capturing-filenames-including-parentheses-with-gnu-makes-wildcard-function#comment24825307_17148894).
 
 ## Parsers


@@ -281,7 +385,7 @@ The former characters have the potential to conflict with make syntax,
 Parsers are used to convert plaintext files into X·M·L trees, as well
   as convert plaintext formats which are already included inline in
   existing source X·M·L documents.
 Parsers are used to convert plaintext files into X·M·L trees, as well
   as convert plaintext formats which are already included inline in
   existing source X·M·L documents.

-⛩️📰 书社 comes with some parsers; namely :⁠—
+⛩📰 书社 comes with some parsers; namely :⁠—

 
 - **`parsers/plain.xslt`:**
   Wraps `text/plain` contents in a `<html:pre>` element.
 
 - **`parsers/plain.xslt`:**
   Wraps `text/plain` contents in a `<html:pre>` element.


@@ -294,7 +398,7 @@ Parsers are used to convert plaintext files into X·M·L trees, as well
   Converts `text/tab-separated-values` contents into an `<html:table>`
     element.
 
   Converts `text/tab-separated-values` contents into an `<html:table>`
     element.
 

-New ⛩️📰 书社 parsers which target plaintext formats should have an
+New ⛩📰 书社 parsers which target plaintext formats should have an

   `<xslt:template>` element with no `@name` or `@mode` and whose
   `@match` attribute…
 
   `<xslt:template>` element with no `@name` or `@mode` and whose
   `@match` attribute…
 


@@ -326,7 +430,7 @@ For example, the trivial `text/plain` parser is defined as follows :⁠—
 </transform>
 ```
 
 </transform>
 ```
 

-⛩️📰 书社 will scan the provided parsers for this pattern to determine
+⛩📰 书社 will scan the provided parsers for this pattern to determine

   the set of allowed plaintext file types.
 Multiple such `<xslt:template>` elements may be provided in a single
   parser, for example if the parser supports multiple media types.
   the set of allowed plaintext file types.
 Multiple such `<xslt:template>` elements may be provided in a single
   parser, for example if the parser supports multiple media types.


@@ -360,23 +464,27 @@ It is **strongly recommended** that auxillary templates in parsers be
 
 ### Attributes added during parsing
 
 
 ### Attributes added during parsing
 

-⛩️📰 书社 will add a few attributes to the output of the parsing step,
-  namely :⁠—
+⛩📰 书社 will add a few attributes to elements which result from
+  parsing plaintext `<html:script>` elements.
+These include :⁠—

 
 

-- A `@书社:cksum` attribute on toplevel result elements, giving the
-    `cksum` checksum of the corresponding source file.
+- A `@书社:parsed-by` attribute, giving a space‐separated list of
+    parsers which parsed the node.
+  (Generally, this will be a list of one, but it is possible for the
+    result of a parse to be another plaintext node, which may be parsed
+    by a different parser.)

 
 

-- For the elements which result from parsing plaintext `<html:script>`
-    elements :⁠—
+- A `@书社:media-type` attribute, giving the identified media type of
+    the plaintext node.

 
 

-  - A `@书社:parsed-by` attribute, giving a space‐separated list of
-      parsers which parsed the node.
-    (Generally, this will be a list of one, but it is possible for the
-      result of a parse to be another plaintext node, which may be
-      parsed by a different parser.)
+## Output Redirection

 
 

-  - A `@书社:media-type` attribute, giving the identified media type of
-      the plaintext node.
+By default, ⛩📰 书社 installs files to the same location in `DESTDIR`
+  as they were placed in their `SRCDIR`.
+This behaviour can be customized by setting the `@书社:destination`
+  attribute on the root element, whose value can give a different path.
+This attribute is read after parsing, but before transformation (where
+  it is silently dropped).

 
 ## Embedding
 
 
 ## Embedding
 


@@ -399,24 +507,40 @@ Embed replacements will be given a `@书社:identifier` attribute whose
 
 Embedding takes place after parsing but before transformation, so
   parsers are able to generate their own embeds.
 
 Embedding takes place after parsing but before transformation, so
   parsers are able to generate their own embeds.

-⛩️📰 书社 is able to detect the transitive embed dependencies of files
+⛩📰 书社 is able to detect the transitive embed dependencies of files

   and update them accordingly; it will signal an error if the
   dependencies are recursive.
 
   and update them accordingly; it will signal an error if the
   dependencies are recursive.
 

-## Output Redirection
+### Attributes added during expansion

 
 

-By default, ⛩️📰 书社 installs files to the same location in `DESTDIR`
-  as they were placed in their `SRCDIR`.
-This behaviour can be customized by setting the `@书社:destination`
-  attribute on the root element, whose value can give a different path.
-This attribute is read after parsing, but before transformation (where
-  it is silently dropped).
+⛩📰 书社 will add a few attributes to toplevel result elements, both
+  in the main document and any embedded documents, during the expansion
+  phase prior to the main transformation.
+These include :⁠—
+
+- A `@书社:cksum` attribute giving the `cksum` checksum of the
+    corresponding source file.
+
+- A `@书社:mtime` attribute giving the last modified time of the
+    corresponding source file.
+
+- A `@书社:identifier` attribute giving the ⛩📰 书社 identifier
+    (i·e, starting with `about:shushe?`) of the corresponding source
+    file.
+
+- For elements in the `html` namespace, an `itemscope` attribute and an
+    `itemtype` attribute with a value of
+    `urn:fdc:ladys.computer:20231231:Shu1She4:document` (for the main
+    document) or `urn:fdc:ladys.computer:20231231:Shu1She4:embed` (for
+    embedded documents).
+  These attributes are used to scope any nested `<html:meta>` elements
+    with `@itemprop` attributes to their containing documents.

 
 ## Transforms
 
 Transforms are used to convert X·M·L files into their final output,
   after all necessary parsing and embedding has taken place.
 
 ## Transforms
 
 Transforms are used to convert X·M·L files into their final output,
   after all necessary parsing and embedding has taken place.

-⛩️📰 书社 comes with some transforms; namely :⁠—
+⛩📰 书社 comes with some transforms; namely :⁠—

 
 - **`transforms/asset.xslt`:**
   Converts `<html:object>` elements which correspond to recognized
 
 - **`transforms/asset.xslt`:**
   Converts `<html:object>` elements which correspond to recognized


@@ -432,7 +556,7 @@ Transforms are used to convert X·M·L files into their final output,
   - **`urn:fdc:ladys.computer:20231231:Shu1She4:title`:**
     Provides the title of the page.
 
   - **`urn:fdc:ladys.computer:20231231:Shu1She4:title`:**
     Provides the title of the page.
 

-  ⛩️📰 书社 automatically encapsulates H·T·M·L embeds so that their
+  ⛩📰 书社 automatically encapsulates H·T·M·L embeds so that their

     metadata does not propogate up to the embedding document.
   To undo this behaviour, remove the `@itemscope` and `@itemtype`
     attributes from the embed during the transformation phase.
     metadata does not propogate up to the embedding document.
   To undo this behaviour, remove the `@itemscope` and `@itemtype`
     attributes from the embed during the transformation phase.


@@ -454,8 +578,8 @@ Transforms are used to convert X·M·L files into their final output,
     name·space.
   Multiple prefixes may be provided, separated by white·space.
 
     name·space.
   Multiple prefixes may be provided, separated by white·space.
 

-  When it comes to name·spaces used internally by ⛩️📰 书社, the
-    prefix used by ⛩️📰 书社 may be declared _in addition to_ the
+  When it comes to name·spaces used internally by ⛩📰 书社, the
+    prefix used by ⛩📰 书社 may be declared _in addition to_ the

     prefix(es) used in the source document(s).
   It is not possible to selectively only declare one prefix for a
     name·space to the exclusion of others.
     prefix(es) used in the source document(s).
   It is not possible to selectively only declare one prefix for a
     name·space to the exclusion of others.


@@ -484,36 +608,27 @@ The following params are made available globally in parsers and
 - **`BUILDTIME`:**
   The current time.
 
 - **`BUILDTIME`:**
   The current time.
 

-- **`CKSUM`:**
-  The checksum of the source file (⅌ `cksum`).
-

 - **`IDENTIFIER`:**
 - **`IDENTIFIER`:**

-  The ⛩️📰 书社 identifier of the source file (a u·r·i beginning with
+  The ⛩📰 书社 identifier of the source file (a u·r·i beginning with

     `about:shushe`).
 
 - **`SRCREV`:**
   The value of the `SRCREV` variable (if present).
 
     `about:shushe`).
 
 - **`SRCREV`:**
   The value of the `SRCREV` variable (if present).
 

-- **`SRCTIME`:**
-  The time at which the source file was last modified.
-

 - **`THISREV`:**
   The value of the `THISREV` variable (if present).
 
 The following params are only available in transforms :⁠—
 
 - **`THISREV`:**
   The value of the `THISREV` variable (if present).
 
 The following params are only available in transforms :⁠—
 

-- **`CATALOG`:**
-  The path of the catalog file (within `BUILDDIR`).
-

 - **`PATH`:**
   The path of the output file (within `DESTDIR`).
 
 ## Output Wrapping
 
 - **`PATH`:**
   The path of the output file (within `DESTDIR`).
 
 ## Output Wrapping
 

-⛩️📰 书社 will wrap the final output of the transforms in appropriate
+⛩📰 书社 will wrap the final output of the transforms in appropriate

   `<html:html>` and `<html:body>` elements, so it is not necessary for
   transforms to do this explicitly.
   `<html:html>` and `<html:body>` elements, so it is not necessary for
   transforms to do this explicitly.

-After performing the initial transform, ⛩️📰 书社 will match the root
+After performing the initial transform, ⛩📰 书社 will match the root

   node of the result in the following modes to fill in areas of the
   wrapper :⁠—
 
   node of the result in the following modes to fill in areas of the
   wrapper :⁠—
 


@@ -589,7 +704,7 @@ On H·T·M·L and S·V·G elements, `@lang` has the same behaviour as
 
 There are a few special elements in the `书社:` name·space which, if
   they appear as the toplevel element in a transformation result, cause
 
 There are a few special elements in the `书社:` name·space which, if
   they appear as the toplevel element in a transformation result, cause

-  ⛩️📰 书社 to produce something other than an X·M·L file.
+  ⛩📰 书社 to produce something other than an X·M·L file.

 They are :⁠—
 
 - **`<书社:archive>`:**
 They are :⁠—
 
 - **`<书社:archive>`:**


@@ -601,6 +716,13 @@ They are :⁠—
     non X·M·L output types, ⁊·c).
   Other child elements will be ignored.
 
     non X·M·L output types, ⁊·c).
   Other child elements will be ignored.
 

+  If the `<书社:archive>` element is given an `@书社:expanded`
+    attribute, rather than producing a tarball ⛩📰 书社 will output
+    the directory which expanding the tarball would produce.
+  This mechanism can be used to generate multiple files from a single
+    source, provided all of the files are contained with·in the same
+    directory.
+

 - **`<书社:base64-binary>`:**
   The text nodes in the transformation result will, after removing all
     Ascii whitespace, be treated as a Base·64 string, which is then
 - **`<书社:base64-binary>`:**
   The text nodes in the transformation result will, after removing all
     Ascii whitespace, be treated as a Base·64 string, which is then


@@ -619,3 +741,4 @@ Most source files are licensed under the terms of the <cite>Mozilla
 
 [REUSE]: <https://reuse.software/spec/>
 [draft-phillips-record-jar-01]: <https://datatracker.ietf.org/doc/html/draft-phillips-record-jar-01>
 
 [REUSE]: <https://reuse.software/spec/>
 [draft-phillips-record-jar-01]: <https://datatracker.ietf.org/doc/html/draft-phillips-record-jar-01>

+[rdar-92753335]: <https://github.com/apple-oss-distributions/patch_cmds/blob/5084833f90df1b0e0924ea56f94c0199b3b8bbc6/diff/diffreg.c#L1800-L1808>