X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/halibut/blobdiff_plain/d7482997dd1ca71b70df43c15dd5956f435a1a7e..9057a0a8b88a40b9e842ea583a71a49eff306f63:/bk_xhtml.c diff --git a/bk_xhtml.c b/bk_xhtml.c index 2016e10..745cce5 100644 --- a/bk_xhtml.c +++ b/bk_xhtml.c @@ -28,6 +28,7 @@ #include #include +#include #include #include "halibut.h" @@ -62,6 +63,11 @@ struct xhtmlindex_Struct { }; typedef struct { + int just_numbers; + wchar_t *number_suffix; +} xhtmlheadfmt; + +typedef struct { int contents_depth[6]; int leaf_contains_contents; int leaf_level; @@ -70,6 +76,8 @@ typedef struct { wchar_t *author, *description; wchar_t *head_end, *body, *body_start, *body_end, *address_start, *address_end, *nav_attrs; int suppress_address; + xhtmlheadfmt fchapter, *fsect; + int nfsect; } xhtmlconfig; /*static void xhtml_level(paragraph *, int); @@ -86,11 +94,11 @@ static void xhtml_utostr(wchar_t *, char **); static int xhtml_para_level(paragraph *); static int xhtml_reservedchar(int); -static int xhtml_convert(wchar_t *, char **, int); -static void xhtml_rdaddwc(rdstringc *, word *, word *); -static void xhtml_para(FILE *, word *); +static int xhtml_convert(wchar_t *, int, char **, int); +static void xhtml_rdaddwc(rdstringc *, word *, word *, int); +static void xhtml_para(FILE *, word *, int); static void xhtml_codepara(FILE *, word *); -static void xhtml_heading(FILE *, paragraph *); +static void xhtml_heading(FILE *, paragraph *, int); /* File-global variables are much easier than passing these things * all over the place. Evil, but easier. We can replace this with a single @@ -135,6 +143,15 @@ static xhtmlconfig xhtml_configure(paragraph *source) ret.nav_attrs = NULL; ret.suppress_address = FALSE; + ret.fchapter.just_numbers = FALSE; + ret.fchapter.number_suffix = ustrdup(L": "); + ret.nfsect = 2; + ret.fsect = mknewa(xhtmlheadfmt, ret.nfsect); + ret.fsect[0].just_numbers = FALSE; + ret.fsect[0].number_suffix = ustrdup(L": "); + ret.fsect[1].just_numbers = TRUE; + ret.fsect[1].number_suffix = ustrdup(L" "); + for (; source; source = source->next) { if (source->type == para_Config) @@ -153,9 +170,6 @@ static xhtmlconfig xhtml_configure(paragraph *source) ret.contents_depth[5] = utoi(uadv(source->keyword)); } else if (!ustricmp(source->keyword, L"xhtml-leaf-level")) { ret.leaf_level = utoi(uadv(source->keyword)); - if (ret.leaf_level==0) { - fatal(err_whatever, "xhtml-leaf-level cannot be zero"); - } } else if (!ustricmp(source->keyword, L"xhtml-leaf-smallest-contents")) { ret.leaf_smallest_contents = utoi(uadv(source->keyword)); } else if (!ustricmp(source->keyword, L"xhtml-versionid")) { @@ -182,6 +196,40 @@ static xhtmlconfig xhtml_configure(paragraph *source) ret.address_end = uadv(source->keyword); } else if (!ustricmp(source->keyword, L"xhtml-navigation-attributes")) { ret.nav_attrs = uadv(source->keyword); + } else if (!ustricmp(source->keyword, L"xhtml-chapter-numeric")) { + ret.fchapter.just_numbers = utob(uadv(source->keyword)); + } else if (!ustricmp(source->keyword, L"xhtml-chapter-suffix")) { + ret.fchapter.number_suffix = ustrdup(uadv(source->keyword)); + } else if (!ustricmp(source->keyword, L"xhtml-section-numeric")) { + wchar_t *p = uadv(source->keyword); + int n = 0; + if (uisdigit(*p)) { + n = utoi(p); + p = uadv(p); + } + if (n >= ret.nfsect) { + int i; + ret.fsect = resize(ret.fsect, n+1); + for (i = ret.nfsect; i <= n; i++) + ret.fsect[i] = ret.fsect[ret.nfsect-1]; + ret.nfsect = n+1; + } + ret.fsect[n].just_numbers = utob(p); + } else if (!ustricmp(source->keyword, L"xhtml-section-suffix")) { + wchar_t *p = uadv(source->keyword); + int n = 0; + if (uisdigit(*p)) { + n = utoi(p); + p = uadv(p); + } + if (n >= ret.nfsect) { + int i; + ret.fsect = resize(ret.fsect, n+1); + for (i = ret.nfsect; i <= n; i++) + ret.fsect[i] = ret.fsect[ret.nfsect-1]; + ret.nfsect = n+1; + } + ret.fsect[n].number_suffix = ustrdup(p); } } } @@ -311,7 +359,7 @@ void xhtml_fixup_layout(xhtmlfile* file) * | | | * X +----X----+ (1) * | | - * Y (3) + * Y (2) * | * (3) * @@ -390,6 +438,12 @@ static void xhtml_ponder_layout(paragraph *p) currentfile = topfile; currentsect = topsection; + if (conf.leaf_level == 0) { + topfile->is_leaf = 1; + topfile->sections = topsection; + topsection->file = topfile; + } + for (; p; p=p->next) { int level = xhtml_para_level(p); @@ -526,7 +580,7 @@ static void xhtml_ponder_layout(paragraph *p) static void xhtml_do_index(); static void xhtml_do_file(xhtmlfile *file); static void xhtml_do_top_file(xhtmlfile *file, paragraph *sourceform); -static void xhtml_do_paras(FILE *fp, paragraph *p); +static void xhtml_do_paras(FILE *fp, paragraph *p, paragraph *end, int indexable); static int xhtml_do_contents_limit(FILE *fp, xhtmlfile *file, int limit); static int xhtml_do_contents_section_limit(FILE *fp, xhtmlsection *section, int limit); static int xhtml_add_contents_entry(FILE *fp, xhtmlsection *section, int limit); @@ -596,8 +650,10 @@ void xhtml_backend(paragraph *sourceform, keywordlist *in_keywords, /* new system ... (writes to *.html, but isn't fully trusted) */ xhtml_do_top_file(topfile, sourceform); assert(!topfile->next); /* shouldn't have a sibling at all */ - xhtml_do_files(topfile->child); - xhtml_do_index(); + if (topfile->child) { + xhtml_do_files(topfile->child); + xhtml_do_index(); + } /* release file, section, index data structures */ xsect = topsection; @@ -620,12 +676,22 @@ void xhtml_backend(paragraph *sourceform, keywordlist *in_keywords, } ientry->backend_data = NULL; } + { + int i; + sfree(conf.fchapter.number_suffix); + for (i = 0; i < conf.nfsect; i++) + sfree(conf.fsect[i].number_suffix); + sfree(conf.fsect); + } } static int xhtml_para_level(paragraph *p) { switch (p->type) { + case para_Title: + return 0; + break; case para_UnnumberedChapter: case para_Chapter: case para_Appendix: @@ -685,17 +751,13 @@ static void xhtml_donavlinks(FILE *fp, xhtmlfile *file) } /* Write out the index file */ -static void xhtml_do_index() +static void xhtml_do_index_body(FILE *fp) { - word temp_word = { NULL, NULL, word_Normal, 0, 0, L"Index", { NULL, 0, 0} }; indexentry *y; int ti; - FILE *fp = fopen(xhtml_index_filename, "w"); - if (fp==NULL) - fatal(err_cantopenw, xhtml_index_filename); - xhtml_doheader(fp, &temp_word); - xhtml_donavlinks(fp, NULL); + if (count234(idx->entries) == 0) + return; /* don't write anything at all */ fprintf(fp, "
\n"); /* iterate over idx->entries using the tree functions and display everything */ @@ -705,7 +767,7 @@ static void xhtml_do_index() xhtmlindex *xi; fprintf(fp, "
"); - xhtml_para(fp, y->text); + xhtml_para(fp, y->text, FALSE); fprintf(fp, "
\n
"); xi = (xhtmlindex*) y->backend_data; @@ -714,9 +776,9 @@ static void xhtml_do_index() if (sect) { fprintf(fp, "", sect->file->filename, sect->fragment); if (sect->para->kwtext) { - xhtml_para(fp, sect->para->kwtext); + xhtml_para(fp, sect->para->kwtext, FALSE); } else if (sect->para->words) { - xhtml_para(fp, sect->para->words); + xhtml_para(fp, sect->para->words, FALSE); } fprintf(fp, ""); if (i+1nsection) { @@ -728,6 +790,18 @@ static void xhtml_do_index() } } fprintf(fp, "
\n"); +} +static void xhtml_do_index() +{ + word temp_word = { NULL, NULL, word_Normal, 0, 0, L"Index", { NULL, 0, 0} }; + FILE *fp = fopen(xhtml_index_filename, "w"); + + if (fp==NULL) + fatal(err_cantopenw, xhtml_index_filename); + xhtml_doheader(fp, &temp_word); + xhtml_donavlinks(fp, NULL); + + xhtml_do_index_body(fp); xhtml_donavlinks(fp, NULL); xhtml_dofooter(fp); @@ -751,7 +825,8 @@ static void xhtml_do_file(xhtmlfile *file) xhtml_donavlinks(fp, file); - if (file->is_leaf && conf.leaf_contains_contents && xhtml_do_contents(NULL, file)>=conf.leaf_smallest_contents) + if (file->is_leaf && conf.leaf_contains_contents && + xhtml_do_contents(NULL, file)>=conf.leaf_smallest_contents) xhtml_do_contents(fp, file); xhtml_do_sections(fp, file->sections); if (!file->is_leaf) @@ -786,28 +861,44 @@ static void xhtml_do_top_file(xhtmlfile *file, paragraph *sourceform) if (!done) xhtml_doheader(fp, NULL /* Eek! */); - /* Do the preamble and copyright */ + /* + * Display the title. + */ for (p = sourceform; p; p = p->next) { - if (p->type == para_Preamble) - { - fprintf(fp, "

"); - xhtml_para(fp, p->words); - fprintf(fp, "

\n"); + if (p->type == para_Title) { + xhtml_heading(fp, p, FALSE); + break; } } + + /* Do the preamble */ for (p = sourceform; p; p = p->next) { - if (p->type == para_Copyright) - { - fprintf(fp, "

"); - xhtml_para(fp, p->words); - fprintf(fp, "

\n"); + if (p->type == para_Chapter || p->type == para_Heading || + p->type == para_Subsect || p->type == para_Appendix || + p->type == para_UnnumberedChapter) { + /* + * We've found the end of the preamble. Do every normal + * paragraph up to there. + */ + xhtml_do_paras(fp, sourceform, p, FALSE); + break; } } xhtml_do_contents(fp, file); xhtml_do_sections(fp, file->sections); + + /* + * Put the index in the top file if we're in single-file mode + * (leaf-level 0). + */ + if (conf.leaf_level == 0 && count234(idx->entries) > 0) { + fprintf(fp, "

Index

\n"); + xhtml_do_index_body(fp); + } + xhtml_dofooter(fp); fclose(fp); } @@ -939,7 +1030,7 @@ static int xhtml_add_contents_entry(FILE *fp, xhtmlsection *section, int limit) { if (!section || section->level > limit) return FALSE; - if (fp==NULL) + if (fp==NULL || section->level < 0) return TRUE; while (last_level > section->level) { last_level--; @@ -951,13 +1042,13 @@ static int xhtml_add_contents_entry(FILE *fp, xhtmlsection *section, int limit) } fprintf(fp, "
  • ", section->file->filename, section->fragment); if (section->para->kwtext) { - xhtml_para(fp, section->para->kwtext); + xhtml_para(fp, section->para->kwtext, FALSE); if (section->para->words) { fprintf(fp, ": "); } } if (section->para->words) { - xhtml_para(fp, section->para->words); + xhtml_para(fp, section->para->words, FALSE); } fprintf(fp, "
  • \n"); return TRUE; @@ -971,23 +1062,25 @@ static void xhtml_do_sections(FILE *fp, xhtmlsection *sections) { while (sections) { currentsection = sections; - xhtml_do_paras(fp, sections->para); + xhtml_do_paras(fp, sections->para, NULL, TRUE); xhtml_do_sections(fp, sections->child); sections = sections->next; } } /* Write this list of paragraphs. Close off all lists at the end. */ -static void xhtml_do_paras(FILE *fp, paragraph *p) +static void xhtml_do_paras(FILE *fp, paragraph *p, paragraph *end, + int indexable) { - int last_type = -1, first=TRUE; + int last_type = -1, ptype, first=TRUE; + stack lcont_stack = stk_new(); if (!p) return; /* for (; p && (xhtml_para_level(p)>limit || xhtml_para_level(p)==-1 || first); p=p->next) {*/ - for (; p && (xhtml_para_level(p)==-1 || first); p=p->next) { + for (; p && p != end && (xhtml_para_level(p)==-1 || first); p=p->next) { first=FALSE; - switch (p->type) + switch (ptype = p->type) { /* * Things we ignore because we've already processed them or @@ -997,8 +1090,6 @@ static void xhtml_do_paras(FILE *fp, paragraph *p) case para_BR: case para_Biblio: /* only touch BiblioCited */ case para_VersionID: - case para_Copyright: - case para_Preamble: case para_NoCite: case para_Title: break; @@ -1009,12 +1100,12 @@ static void xhtml_do_paras(FILE *fp, paragraph *p) case para_Chapter: case para_Appendix: case para_UnnumberedChapter: - xhtml_heading(fp, p); + xhtml_heading(fp, p, indexable); break; case para_Heading: case para_Subsect: - xhtml_heading(fp, p); + xhtml_heading(fp, p, indexable); break; case para_Rule: @@ -1022,13 +1113,41 @@ static void xhtml_do_paras(FILE *fp, paragraph *p) break; case para_Normal: + case para_Copyright: fprintf(fp, "\n

    "); - xhtml_para(fp, p->words); + xhtml_para(fp, p->words, indexable); fprintf(fp, "

    \n"); break; + case para_LcontPush: + { + int *p; + p = mknew(int); + *p = last_type; + stk_push(lcont_stack, p); + last_type = para_Normal; + } + break; + case para_LcontPop: + { + int *p = stk_pop(lcont_stack); + assert(p); + ptype = last_type = *p; + sfree(p); + goto closeofflist; /* ick */ + } + break; + case para_QuotePush: + fprintf(fp, "
    \n"); + break; + case para_QuotePop: + fprintf(fp, "
    \n"); + break; + case para_Bullet: case para_NumberedList: + case para_Description: + case para_DescribedThing: case para_BiblioCited: if (last_type!=p->type) { /* start up list if necessary */ @@ -1036,41 +1155,62 @@ static void xhtml_do_paras(FILE *fp, paragraph *p) fprintf(fp, "
      \n"); } else if (p->type == para_NumberedList) { fprintf(fp, "
        \n"); - } else if (p->type == para_BiblioCited) { + } else if (p->type == para_BiblioCited || + p->type == para_DescribedThing || + p->type == para_Description) { fprintf(fp, "
        \n"); } } - if (p->type == para_Bullet || p->type == para_NumberedList) + if (p->type == para_Bullet || p->type == para_NumberedList) { fprintf(fp, "
      1. "); - else if (p->type == para_BiblioCited) { + } else if (p->type == para_DescribedThing) { fprintf(fp, "
        "); - xhtml_para(fp, p->kwtext); + } else if (p->type == para_Description) { + fprintf(fp, "
        "); + } else if (p->type == para_BiblioCited) { + fprintf(fp, "
        "); + xhtml_para(fp, p->kwtext, indexable); fprintf(fp, "
        \n
        "); } - xhtml_para(fp, p->words); - if (p->type == para_BiblioCited) { + xhtml_para(fp, p->words, indexable); + { + paragraph *p2 = p->next; + if (p2 && xhtml_para_level(p2)==-1 && p2->type == para_LcontPush) + break; + } + + closeofflist: + if (ptype == para_BiblioCited) { fprintf(fp, "
        \n"); - } else if (p->type == para_Bullet || p->type == para_NumberedList) { + } else if (p->type == para_DescribedThing) { + fprintf(fp, ""); + } else if (p->type == para_Description) { + fprintf(fp, ""); + } else if (ptype == para_Bullet || ptype == para_NumberedList) { fprintf(fp, "
      2. "); } - if (p->type == para_Bullet || p->type == para_NumberedList || p->type == para_BiblioCited) + if (ptype == para_Bullet || ptype == para_NumberedList || + ptype == para_BiblioCited || ptype == para_Description || + ptype == para_DescribedThing) /* close off list if necessary */ { paragraph *p2 = p->next; int close_off=FALSE; /* if (p2 && (xhtml_para_level(p2)>limit || xhtml_para_level(p2)==-1)) {*/ if (p2 && xhtml_para_level(p2)==-1) { - if (p2->type != p->type) + if (p2->type != ptype && p2->type != para_LcontPush) close_off=TRUE; } else { close_off=TRUE; } if (close_off) { - if (p->type == para_Bullet) { + if (ptype == para_Bullet) { fprintf(fp, "
    \n"); - } else if (p->type == para_NumberedList) { + } else if (ptype == para_NumberedList) { fprintf(fp, "\n"); - } else if (p->type == para_BiblioCited) { + } else if (ptype == para_BiblioCited || + ptype == para_Description || + ptype == para_DescribedThing) { fprintf(fp, "\n"); } } @@ -1081,8 +1221,10 @@ static void xhtml_do_paras(FILE *fp, paragraph *p) xhtml_codepara(fp, p->words); break; } - last_type = p->type; + last_type = ptype; } + + stk_free(lcont_stack); } /* @@ -1096,7 +1238,7 @@ static void xhtml_doheader(FILE *fp, word *title) if (title==NULL) fprintf(fp, "The thing with no name!"); else - xhtml_para(fp, title); + xhtml_para(fp, title, FALSE); fprintf(fp, "\n"); fprintf(fp, "\n", version); if (conf.author) @@ -1152,7 +1294,7 @@ static void xhtml_versionid(FILE *fp, word *text, int started) rdstringc t = { 0, 0, NULL }; rdaddc(&t, '['); /* FIXME: configurability */ - xhtml_rdaddwc(&t, text, NULL); + xhtml_rdaddwc(&t, text, NULL, FALSE); rdaddc(&t, ']'); /* FIXME: configurability */ if (started) @@ -1190,13 +1332,17 @@ static int xhtml_reservedchar(int c) * characters are OK but `result' is non-NULL, a result _will_ * still be generated! */ -static int xhtml_convert(wchar_t *s, char **result, int hard_spaces) { +static int xhtml_convert(wchar_t *s, int maxlen, char **result, + int hard_spaces) { int doing = (result != 0); int ok = TRUE; char *p = NULL; int plen = 0, psize = 0; - for (; *s; s++) { + if (maxlen <= 0) + maxlen = -1; + + for (; *s && maxlen != 0; s++, maxlen--) { wchar_t c = *s; #define ensure_size(i) if (i>=psize) { psize = i+256; p = resize(p, psize); } @@ -1238,8 +1384,14 @@ static int xhtml_convert(wchar_t *s, char **result, int hard_spaces) { /* * This formats the given words as XHTML. + * + * `indexable', if FALSE, prohibits adding any index references. + * You might use this, for example, if an index reference occurred + * in a section title, to prevent phony index references when the + * section title is processed in strange places such as contents + * sections. */ -static void xhtml_rdaddwc(rdstringc *rs, word *text, word *end) { +static void xhtml_rdaddwc(rdstringc *rs, word *text, word *end, int indexable) { char *c; keyword *kwl; xhtmlsection *sect; @@ -1286,6 +1438,9 @@ static void xhtml_rdaddwc(rdstringc *rs, word *text, word *end) { /* what we _do_ need to do is to fix up the backend data * for any indexentry this points to. */ + if (!indexable) + break; + for (ti=0; (itag = (indextag *)index234(idx->tags, ti))!=NULL; ti++) { /* FIXME: really ustricmp() and not ustrcmp()? */ if (ustricmp(itag->name, text->text)==0) { @@ -1363,10 +1518,10 @@ static void xhtml_rdaddwc(rdstringc *rs, word *text, word *end) { rdaddsc(rs, ""); if (removeattr(text->type) == word_Normal) { - if (xhtml_convert(text->text, &c, TRUE)) /* spaces in the word are hard */ + if (xhtml_convert(text->text, 0, &c, TRUE)) /* spaces in the word are hard */ rdaddsc(rs, c); else - xhtml_rdaddwc(rs, text->alt, NULL); + xhtml_rdaddwc(rs, text->alt, NULL, indexable); sfree(c); } else if (removeattr(text->type) == word_WhiteSpace) { rdaddc(rs, ' '); @@ -1389,7 +1544,7 @@ static void xhtml_rdaddwc(rdstringc *rs, word *text, word *end) { /* Output a heading, formatted as XHTML. */ -static void xhtml_heading(FILE *fp, paragraph *p) +static void xhtml_heading(FILE *fp, paragraph *p, int indexable) { rdstringc t = { 0, 0, NULL }; word *tprefix = p->kwtext; @@ -1397,22 +1552,60 @@ static void xhtml_heading(FILE *fp, paragraph *p) word *text = p->words; int level = xhtml_para_level(p); xhtmlsection *sect = xhtml_find_section(p); + xhtmlheadfmt *fmt; char *fragment; if (sect) { fragment = sect->fragment; } else { - fragment = ""; /* FIXME: what else can we do? */ - error(err_whatever, "Couldn't locate heading cross-reference!"); + if (p->type == para_Title) + fragment = "title"; + else { + fragment = ""; /* FIXME: what else can we do? */ + error(err_whatever, "Couldn't locate heading cross-reference!"); + } } - if (level>2 && nprefix) { /* FIXME: configurability on the level thing */ - xhtml_rdaddwc(&t, nprefix, NULL); - rdaddc(&t, ' '); /* FIXME: as below */ - } else if (tprefix) { - xhtml_rdaddwc(&t, tprefix, NULL); - rdaddsc(&t, ": "); /* FIXME: configurability */ + if (p->type == para_Title) + fmt = NULL; + else if (level == 1) + fmt = &conf.fchapter; + else if (level-1 < conf.nfsect) + fmt = &conf.fsect[level-1]; + else + fmt = &conf.fsect[conf.nfsect-1]; + + if (fmt && fmt->just_numbers && nprefix) { + xhtml_rdaddwc(&t, nprefix, NULL, indexable); + if (fmt) { + char *c; + if (xhtml_convert(fmt->number_suffix, 0, &c, FALSE)) { + rdaddsc(&t, c); + sfree(c); + } + } + } else if (fmt && !fmt->just_numbers && tprefix) { + xhtml_rdaddwc(&t, tprefix, NULL, indexable); + if (fmt) { + char *c; + if (xhtml_convert(fmt->number_suffix, 0, &c, FALSE)) { + rdaddsc(&t, c); + sfree(c); + } + } } - xhtml_rdaddwc(&t, text, NULL); + xhtml_rdaddwc(&t, text, NULL, indexable); + /* + * If we're outputting in single-file mode, we need to lower + * the level of each heading by one, because the overall + * document title will be sitting right at the top as an

    + * and so chapters and sections should start at

    . + * + * Even if not, the document title will come back from + * xhtml_para_level() as level zero, so we must increment that + * no matter what leaf_level is set to. + */ + if (conf.leaf_level == 0 || level == 0) + level++; fprintf(fp, "%s\n", fragment, level, t.text, level); sfree(t.text); } @@ -1420,10 +1613,10 @@ static void xhtml_heading(FILE *fp, paragraph *p) /* Output a paragraph. Styles are handled by xhtml_rdaddwc(). * This looks pretty simple; I may have missed something ... */ -static void xhtml_para(FILE *fp, word *text) +static void xhtml_para(FILE *fp, word *text, int indexable) { rdstringc out = { 0, 0, NULL }; - xhtml_rdaddwc(&out, text, NULL); + xhtml_rdaddwc(&out, text, NULL, indexable); fprintf(fp, "%s", out.text); sfree(out.text); } @@ -1437,10 +1630,49 @@ static void xhtml_codepara(FILE *fp, word *text) { fprintf(fp, "
    ");
         for (; text; text = text->next) if (text->type == word_WeakCode) {
    +	word *here, *next;
     	char *c;
    -	xhtml_convert(text->text, &c, FALSE);
    -	fprintf(fp, "%s\n", c);
    -	sfree(c);
    +
    +	/*
    +	 * See if this WeakCode is followed by an Emph to indicate
    +	 * emphasis.
    +	 */
    +	here = text;
    +	if (text->next && text->next->type == word_Emph) {
    +	    next = text = text->next;
    +	} else
    +	    next = NULL;
    +
    +	if (next) {
    +	    wchar_t *t, *e;
    +	    int n;
    +
    +	    t = here->text;
    +	    e = next->text;
    +
    +	    while (*e) {
    +		int ec = *e;
    +
    +		for (n = 0; t[n] && e[n] && e[n] == ec; n++);
    +		xhtml_convert(t, n, &c, FALSE);
    +		fprintf(fp, "%s%s%s",
    +			(ec == 'i' ? "" : ec == 'b' ? "" : ""),
    +			c,
    +			(ec == 'i' ? "" : ec == 'b' ? "" : ""));
    +		sfree(c);
    +
    +		t += n;
    +		e += n;
    +	    }
    +
    +	    xhtml_convert(t, 0, &c, FALSE);
    +	    fprintf(fp, "%s\n", c);
    +	    sfree(c);
    +	} else {
    +	    xhtml_convert(here->text, 0, &c, FALSE);
    +	    fprintf(fp, "%s\n", c);
    +	    sfree(c);
    +	}
         }
       fprintf(fp, "
    \n"); }