Drop empty shebang documents

[LesML] / parser.xslt

diff --git a/parser.xslt b/parser.xslt
index 87726930fb49ae7b722e8894e300411764365ed8..42d5937220a5a2c99def1c15cc975b8aa0387e16 100644 (file)
--- a/parser.xslt
+++ b/parser.xslt
@@ -21,6 +21,7 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
        xmlns="http://www.w3.org/1999/XSL/Transform"
        xmlns:LesML="urn:fdc:ladys.computer:20240512:LesML"
        xmlns:exsl="http://exslt.org/common"
+       xmlns:exslset="http://exslt.org/sets"
        xmlns:exslstr="http://exslt.org/strings"
        xmlns:html="http://www.w3.org/1999/xhtml"
        xmlns:书社="urn:fdc:ladys.computer:20231231:Shu1She4"
@@ -212,13 +213,13 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                <variable name="params" select="exsl:node-set($params-fragment)/*"/>
                <variable name="noshebang" select="$lines[position()>1 or not(starts-with(., '#!lesml') or starts-with(., '##'))]"/>
                <variable name="docsep" select="$noshebang[starts-with(., '#!lesml') or starts-with(., '##')][1]"/>
-               <variable name="doclines" select="$noshebang[not($docsep) or following-sibling::*[generate-id()=generate-id($docsep)]]"/>
+               <variable name="doclines" select="exslset:leading($noshebang, $docsep)"/>
                <if test="starts-with($first-line, '##') and $first-line!='##'">
                        <comment>
                                <value-of select="substring-after($first-line, '##')"/>
                        </comment>
                </if>
-               <if test="$shebang!='' or $doclines[normalize-space()!='']">
+               <if test="$doclines[normalize-space()!='']">
                        <variable name="record-separators" select="$doclines[starts-with(., '%%')]"/>
                        <element name="article" namespace="&xhtml;">
                                <for-each select="$params/html:div/html:dt[string()=' LANG ']">
@@ -242,14 +243,14 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                                                <for-each select="$record-separators">
                                                        <variable name="position" select="position()"/>
                                                        <variable name="prev-separator" select="$record-separators[($position)-1]"/>
-                                                       <variable name="fields" select="$noshebang[following-sibling::*[generate-id()=generate-id(current())] and (not($prev-separator) or preceding-sibling::*[generate-id()=generate-id($prev-separator)])]"/>
+                                                       <variable name="fields" select="exslset:leading(exslset:trailing($doclines, $prev-separator), .)"/>
                                                        <if test="$fields">
                                                                <element name="dl" namespace="&xhtml;">
                                                                        <for-each select="$fields">
                                                                                <choose>
-                                                                                       <when test="starts-with(., ' ') and $fields[generate-id()=generate-id(current()/preceding-sibling::*[1])]"/>
+                                                                                       <when test="starts-with(., ' ') and exslset:leading($fields, .)"/>
                                                                                        <otherwise>
-                                                                                               <variable name="next" select="following-sibling::*[not(starts-with(., ' '))]"/>
+                                                                                               <variable name="next" select="exslset:intersection(following-sibling::*[not(starts-with(., ' '))][1], $fields)"/>
                                                                                                <element name="div" namespace="&xhtml;">
                                                                                                        <element name="dt" namespace="&xhtml;">
                                                                                                                <value-of select="normalize-space(substring-before(., ':'))"/>
@@ -273,7 +274,7 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                                                                                                                                <value-of select="$firstline"/>
                                                                                                                        </otherwise>
                                                                                                                </choose>
-                                                                                                               <for-each select="following-sibling::*[starts-with(., ' ') and not(preceding-sibling::*[generate-id()=generate-id($next)])]">
+                                                                                                               <for-each select="exslset:intersection(following-sibling::*[starts-with(., ' ')], exslset:leading($fields, $next))">
                                                                                                                        <variable name="nextline" select="normalize-space(.)"/>
                                                                                                                        <choose>
                                                                                                                                <when test="substring($nextline, string-length($nextline))='\' and following-sibling::*[position()=1 and starts-with(., ' ')]">
@@ -304,14 +305,14 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                                                <text>body</text>
                                        </attribute>
                                        <call-template name="LesML:paragraphize">
-                                               <with-param name="lines" select="$doclines[not($record-separators) or preceding-sibling::*[generate-id()=generate-id($record-separators[last()])]]"/>
+                                               <with-param name="lines" select="exslset:trailing($doclines, $record-separators[last()])"/>
                                        </call-template>
                                </element>
                        </element>
                </if>
                <if test="$docsep">
                        <call-template name="LesML:parse">
-                               <with-param name="lines" select="$docsep|$lines[preceding-sibling::*[generate-id()=generate-id($docsep)]]"/>
+                               <with-param name="lines" select="$docsep|exslset:trailing($lines, $docsep)"/>
                                <with-param name="parent-params" select="$params"/>
                        </call-template>
                </if>
@@ -323,7 +324,7 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                        <for-each select="$last-lines">
                                <variable name="position" select="position()"/>
                                <variable name="prev-last" select="$last-lines[($position)-1]"/>
-                               <variable name="linespans" select="$lines[following-sibling::*[generate-id()=generate-id(current())] and (not($prev-last) or preceding-sibling::*[generate-id()=generate-id($prev-last)]) and normalize-space()!='']|."/>
+                               <variable name="linespans" select="(exslset:intersection(exslset:trailing($lines, $prev-last), exslset:leading($lines, .))|.)[normalize-space()!='']"/>
                                <variable name="quoted" select="not($linespans[not(starts-with(., ' ') or starts-with(., '&#x9;'))])"/>
                                <variable name="preformatted" select="not($linespans[not(starts-with(normalize-space(), '|'))])"/>
                                <variable name="text">
@@ -647,7 +648,7 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                        <variable name="notquote" select="following-sibling::node()[not(self::html:blockquote)][1]"/>
                        <variable name="contents">
                                <copy-of select="node()"/>
-                               <for-each select="following-sibling::node()[not($notquote) or following-sibling::node()[generate-id()=generate-id($notquote)]]">
+                               <for-each select="exslset:leading(following-sibling::node(), $notquote)">
                                        <copy-of select="node()"/>
                                </for-each>
                        </variable>
@@ -686,7 +687,7 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                        <variable name="notcontinuation" select="following-sibling::node()[not(self::html:div and @class='continuation')][1]"/>
                        <copy>
                                <apply-templates select="@*|node()" mode="LesML:finalize-tree"/>
-                               <for-each select="following-sibling::node()[not($notcontinuation) or following-sibling::node()[generate-id()=generate-id($notcontinuation)]]">
+                               <for-each select="exslset:leading(following-sibling::node(), $notcontinuation)">
                                        <apply-templates select="node()" mode="LesML:finalize-tree"/>
                                </for-each>
                        </copy>
@@ -713,11 +714,11 @@ If a copy of the M·P·L was not distributed with this file, You can obtain one
                </variable>
                <variable name="notinlist" select="following-sibling::node()[not(self::html:div and @class='continuation' or self::html:li and (@data-level>$current-level or @data-level=$current-level and @class=$current-class))][1]"/>
                <element name="{$wrapper}" namespace="&xhtml;">
-                       <for-each select=".|following-sibling::html:li[@data-level=$current-level and (not($notinlist) or following-sibling::node()[generate-id()=generate-id($notinlist)])]">
+                       <for-each select=".|exslset:leading(following-sibling::node(), $notinlist)[self::html:li and @data-level=$current-level]">
                                <variable name="notcontinuation" select="following-sibling::node()[not(self::html:div and @class='continuation')][1]"/>
                                <copy>
                                        <apply-templates select="@*|node()" mode="LesML:finalize-tree"/>
-                                       <for-each select="following-sibling::node()[not($notcontinuation) or following-sibling::node()[generate-id()=generate-id($notcontinuation)]]">
+                                       <for-each select="exslset:leading(following-sibling::node(), $notcontinuation)">
                                                <apply-templates select="node()" mode="LesML:finalize-tree"/>
                                        </for-each>
                                        <if test="$notcontinuation/self::html:li[@data-level>$current-level]">