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- /* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
- /* vim: set ts=2 et sw=2 tw=80: */
- /*************************************************************
- *
- * MathJax/jax/output/CommonHTML/autoload/mtable.js
- *
- * Implements the CommonHTML output for <mtable> elements.
- *
- * ---------------------------------------------------------------------
- *
- * Copyright (c) 2015-2017 The MathJax Consortium
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- MathJax.Hub.Register.StartupHook("CommonHTML Jax Ready",function () {
- var VERSION = "2.7.2";
- var MML = MathJax.ElementJax.mml,
- CONFIG = MathJax.Hub.config,
- CHTML = MathJax.OutputJax.CommonHTML,
- SPLIT = MathJax.Hub.SplitList;
-
- var LABEL = -1,
- BIGDIMEN = 1000000;
- MML.mtable.Augment({
- toCommonHTML: function (node) {
- //
- // Create the table nodes and put them in a table
- // (so that its bottom is on the baseline, rather than aligned on the top row)
- //
- var state = {rows:[], labels:[], labeled: false};
- node = this.CHTMLdefaultNode(node,{noBBox:true, childOptions:state});
- var table = CHTML.Element("mjx-table");
- while (node.firstChild) table.appendChild(node.firstChild);
- node.appendChild(table);
- //
- // Get the table attributes
- //
- var values = this.getValues("columnalign","rowalign","columnspacing","rowspacing",
- "columnwidth","equalcolumns","equalrows",
- "columnlines","rowlines","frame","framespacing",
- "align","width","side","minlabelspacing","useHeight");
- var t = CHTML.TEX.min_rule_thickness/CHTML.em;
- state.t = CHTML.Px(t*this.CHTML.scale,1);
- //
- // Create the table
- //
- this.CHTMLgetBoxSizes(values,state);
- this.CHTMLgetAttributes(values,state);
- this.CHTMLadjustCells(values,state);
- if (values.frame) table.style.border = state.t+" "+values.frame;
- this.CHTMLalignV(values,state,node);
- this.CHTMLcolumnWidths(values,state,node);
- this.CHTMLstretchCells(values,state);
- if (state.labeled) this.CHTMLaddLabels(values,state,node,table);
- //
- // Set the bounding box (ignores overlapping outside of the table)
- //
- var BBOX = this.CHTML;
- BBOX.w = BBOX.r = state.R;
- BBOX.h = BBOX.t = state.T-state.B;
- BBOX.d = BBOX.b = state.B;
- if (!values.frame && !BBOX.pwidth) {
- node.style.padding = "0 "+CHTML.Em(1/6);
- BBOX.L = BBOX.R = 1/6;
- }
- //
- // Add any needed space and color
- //
- this.CHTMLhandleSpace(node);
- this.CHTMLhandleBBox(node);
- this.CHTMLhandleColor(node);
- //
- // Return the completed node
- //
- return node;
- },
- //
- // Get the natural height, depth, and widths of the rows and columns
- //
- CHTMLgetBoxSizes: function (values,state) {
- var LH = CHTML.FONTDATA.lineH * values.useHeight,
- LD = CHTML.FONTDATA.lineD * values.useHeight;
- var H = [], D = [], W = [], J = -1, i, m;
- for (i = 0, m = this.data.length; i < m; i++) {
- var row = this.data[i], s = (row.type === "mtr" ? 0 : LABEL);
- H[i] = LH; D[i] = LD;
- for (var j = s, M = row.data.length + s; j < M; j++) {
- if (W[j] == null) {W[j] = -BIGDIMEN; if (j > J) J = j}
- var cbox = row.data[j-s].CHTML;
- if (cbox.h > H[i]) H[i] = cbox.h;
- if (cbox.d > D[i]) D[i] = cbox.d;
- if (cbox.w > W[j]) W[j] = cbox.w;
- }
- }
- if (values.equalrows) {
- state.HD = true;
- var HH = Math.max.apply(Math,H);
- var DD = Math.max.apply(Math,D);
- for (i = 0, m = H.length; i < m; i++) {H[i] = HH; D[i] = DD}
- }
- state.H = H; state.D = D; state.W = W, state.J = J;
- },
- //
- // Pad the spacing and alignment attributes to match the size of the table
- //
- CHTMLgetAttributes: function (values,state) {
- var CSPACE = SPLIT(values.columnspacing),
- RSPACE = SPLIT(values.rowspacing),
- CALIGN = SPLIT(values.columnalign),
- RALIGN = SPLIT(values.rowalign),
- CLINES = SPLIT(values.columnlines),
- RLINES = SPLIT(values.rowlines),
- CWIDTH = SPLIT(values.columnwidth),
- RCALIGN = [], i, m, J = state.J, M = state.rows.length-1;
- for (i = 0, m = CSPACE.length; i < m; i++) CSPACE[i] = this.CHTMLlength2em(CSPACE[i]);
- for (i = 0, m = RSPACE.length; i < m; i++) RSPACE[i] = this.CHTMLlength2em(RSPACE[i]);
- while (CSPACE.length < J) CSPACE.push(CSPACE[CSPACE.length-1]);
- while (CALIGN.length <= J) CALIGN.push(CALIGN[CALIGN.length-1]);
- while (CLINES.length < J) CLINES.push(CLINES[CLINES.length-1]);
- while (CWIDTH.length <= J) CWIDTH.push(CWIDTH[CWIDTH.length-1]);
- while (RSPACE.length < M) RSPACE.push(RSPACE[RSPACE.length-1]);
- while (RALIGN.length <= M) RALIGN.push(RALIGN[RALIGN.length-1]);
- while (RLINES.length < M) RLINES.push(RLINES[RLINES.length-1]);
- CALIGN[LABEL] = (values.side.substr(0,1) === "l" ? "left" : "right");
- //
- // Override aligment data based on row-specific attributes
- //
- for (i = 0; i <= M; i++) {
- var row = this.data[i]; RCALIGN[i] = [];
- if (row.rowalign) RALIGN[i] = row.rowalign;
- if (row.columnalign) {
- RCALIGN[i] = SPLIT(row.columnalign);
- while (RCALIGN[i].length <= J) RCALIGN[i].push(RCALIGN[i][RCALIGN[i].length-1]);
- }
- }
- //
- // Handle framespacing
- //
- var FSPACE = SPLIT(values.framespacing);
- if (FSPACE.length != 2) FSPACE = SPLIT(this.defaults.framespacing);
- FSPACE[0] = Math.max(0,this.CHTMLlength2em(FSPACE[0]));
- FSPACE[1] = Math.max(0,this.CHTMLlength2em(FSPACE[1]));
- if (values.columnlines.replace(/none/g,"").replace(/ /g,"") !== "" ||
- values.rowlines.replace(/none/g,"").replace(/ /g,"") !== "") values.fspace = true;
- //
- // Pad arrays so that final column can be treated as all the others
- //
- if (values.frame === MML.LINES.NONE) delete values.frame; else values.fspace = true;
- if (values.frame) {
- FSPACE[0] = Math.max(0,FSPACE[0]);
- FSPACE[1] = Math.max(0,FSPACE[1]);
- }
- if (values.fspace) {
- CSPACE[J] = FSPACE[0]; RSPACE[M] = FSPACE[1];
- } else {
- CSPACE[J] = RSPACE[M] = 0;
- }
- CLINES[J] = RLINES[M] = MML.LINES.NONE;
- //
- // Save everything in the state
- //
- state.CSPACE = CSPACE; state.RSPACE = RSPACE;
- state.CALIGN = CALIGN; state.RALIGN = RALIGN;
- state.CLINES = CLINES; state.RLINES = RLINES;
- state.CWIDTH = CWIDTH; state.RCALIGN = RCALIGN;
- state.FSPACE = FSPACE;
- },
- //
- // Add styles to cells to handle borders, spacing, alignment, etc.
- //
- CHTMLadjustCells: function(values,state) {
- var ROWS = state.rows,
- CSPACE = state.CSPACE, CLINES = state.CLINES,
- RSPACE = state.RSPACE, RLINES = state.RLINES,
- CALIGN = state.CALIGN, RALIGN = state.RALIGN,
- RCALIGN = state.RCALIGN;
- CSPACE[state.J] *= 2; RSPACE[ROWS.length-1] *= 2; // since halved below
- var T = "0", B, R, L, border, cbox, align, lastB = 0;
- if (values.fspace) {
- lastB = state.FSPACE[1];
- T = CHTML.Em(state.FSPACE[1]);
- }
- state.RHD = []; state.RH = [];
- for (var i = 0, m = ROWS.length; i < m; i++) {
- var row = ROWS[i], rdata = this.data[i];
- //
- // Space and borders between rows
- //
- B = RSPACE[i]/2; border = null; L = "0";
- if (RLINES[i] !== MML.LINES.NONE && RLINES[i] !== "") border = state.t+" "+RLINES[i];
- if (border || (CLINES[j] !== MML.LINES.NONE && CLINES[j] !== "")) {
- while (row.length <= state.J) {
- row.push(CHTML.addElement(row.node,"mjx-mtd",null,[['span']]));
- }
- }
- state.RH[i] = lastB + state.H[i]; // distance to baseline in row
- lastB = Math.max(0,B);
- state.RHD[i] = state.RH[i] + lastB + state.D[i]; // total height of row
- B = CHTML.Em(lastB);
- //
- // Frame space for initial cell
- //
- if (values.fspace) L = CHTML.Em(state.FSPACE[0]);
- //
- // The cells in the row
- //
- for (var j = 0, M = row.length; j < M; j++) {
- var s = (rdata.type === "mtr" ? 0 : LABEL);
- var mtd = rdata.data[j-s] || {CHTML: CHTML.BBOX.zero()};
- var cell = row[j].style; cbox = mtd.CHTML;
- //
- // Space and borders between columns
- //
- R = CSPACE[j]/2;
- if (CLINES[j] !== MML.LINES.NONE) {
- cell.borderRight = state.t+" "+CLINES[j];
- R -= 1/CHTML.em/2;
- }
- R = CHTML.Em(Math.max(0,R));
- cell.padding = T+" "+R+" 0px "+L;
- if (border) cell.borderBottom = border;
- L = R;
- //
- // Handle vertical alignment
- //
- align = (mtd.rowalign||(this.data[i]||{}).rowalign||RALIGN[i]);
- var H = Math.max(1,cbox.h), D = Math.max(.2,cbox.d),
- HD = (state.H[i]+state.D[i]) - (H+D),
- child = row[j].firstChild.style;
- if (align === MML.ALIGN.TOP) {
- if (HD) child.marginBottom = CHTML.Em(HD);
- cell.verticalAlign = "top";
- } else if (align === MML.ALIGN.BOTTOM) {
- cell.verticalAlign = "bottom";
- if (HD) child.marginTop = CHTML.Em(HD);
- } else if (align === MML.ALIGN.CENTER) {
- if (HD) child.marginTop = child.marginBottom = CHTML.Em(HD/2);
- cell.verticalAlign = "middle";
- } else {
- if (H !== state.H[i]) child.marginTop = CHTML.Em(state.H[i]-H);
- }
- //
- // Handle horizontal alignment
- //
- align = (mtd.columnalign||RCALIGN[i][j]||CALIGN[j]);
- if (align !== MML.ALIGN.CENTER) cell.textAlign = align;
- }
- row.node.style.height = CHTML.Em(state.RHD[i]);
- T = B;
- }
- CSPACE[state.J] /= 2; RSPACE[ROWS.length-1] /= 2; // back to normal
- },
- //
- // Align the table vertically according to the align attribute
- //
- CHTMLalignV: function (values,state,node) {
- var n, M = state.rows.length, H = state.H, D = state.D, RSPACE = state.RSPACE;
- //
- // Get alignment type and row number
- //
- if (typeof(values.align) !== "string") values.align = String(values.align);
- if (values.align.match(/(top|bottom|center|baseline|axis)( +(-?\d+))?/)) {
- n = parseInt(RegExp.$3||"0");
- values.align = RegExp.$1
- if (n < 0) n += state.rows.length + 1;
- if (n > M || n <= 0) n = null;
- } else {
- values.align = this.defaults.align;
- }
- //
- // Get table height and baseline offset
- //
- var T = 0, B = 0, a = CHTML.TEX.axis_height;
- if (values.fspace) T += state.FSPACE[1];
- if (values.frame) {T += 2/CHTML.em; B += 1/CHTML.em}
- for (var i = 0; i < M; i++) {
- var h = H[i], d = D[i];
- T += h + d + RSPACE[i];
- if (n) {
- if (i === n-1) {
- B += ({top:h+d, bottom:0, center:(h+d)/2,
- baseline:d, axis:a+d})[values.align] + RSPACE[i];
- }
- if (i >= n) B += h + d + RSPACE[i];
- }
- }
- if (!n) B = ({top:T, bottom:0, center:T/2, baseline:T/2, axis:T/2-a})[values.align];
- //
- // Place the node and save the values
- //
- if (B) node.style.verticalAlign = CHTML.Em(-B);
- state.T = T; state.B = B;
- },
- //
- // Determine column widths and set the styles for the columns
- //
- CHTMLcolumnWidths: function (values,state,node) {
- var CWIDTH = state.CWIDTH, CSPACE = state.CSPACE, J = state.J, j;
- var WW = 0, setWidths = false, relWidth = values.width.match(/%$/);
- var i, m, w;
- //
- // Handle equal columns by adjusting the CWIDTH array
- //
- if (values.width !== "auto" && !relWidth) {
- WW = Math.max(0,this.CHTMLlength2em(values.width,state.R));
- setWidths = true;
- }
- if (values.equalcolumns) {
- if (relWidth) {
- //
- // Use percent of total (not perfect, but best we can do)
- //
- var p = CHTML.Percent(1/(J+1));
- for (j = 0; j <= J; j++) CWIDTH[j] = p;
- } else {
- //
- // For width = auto, make all widths equal the widest,
- // otherwise, for specific width, remove intercolumn space
- // and divide by number of columns to get widest space.
- //
- w = Math.max.apply(Math,state.W);
- if (values.width !== "auto") {
- var S = (values.fspace ? state.FSPACE[0] + (values.frame ? 2/CHTML.em : 0) : 0);
- for (j = 0; j <= J; j++) S += CSPACE[j];
- w = Math.max((WW-S)/(J+1),w);
- }
- w = CHTML.Em(w);
- for (j = 0; j <= J; j++) CWIDTH[j] = w;
- }
- setWidths = true;
- }
- //
- // Compute natural table width
- //
- var TW = 0; if (values.fspace) TW = state.FSPACE[0];
- var auto = [], fit = [], percent = [], W = [];
- var row = state.rows[0];
- for (j = 0; j <= J; j++) {
- W[j] = state.W[j];
- if (CWIDTH[j] === "auto") auto.push(j)
- else if (CWIDTH[j] === "fit") fit.push(j)
- else if (CWIDTH[j].match(/%$/)) percent.push(j)
- else W[j] = this.CHTMLlength2em(CWIDTH[j],W[j]);
- TW += W[j] + CSPACE[j];
- if (row[j]) row[j].style.width = CHTML.Em(W[j]);
- }
- if (values.frame) TW += 2/CHTML.em;
- var hasFit = (fit.length > 0);
- //
- // Adjust widths of columns
- //
- if (setWidths) {
- if (relWidth) {
- //
- // Attach appropriate widths to the columns
- //
- for (j = 0; j <= J; j++) {
- cell = row[j].style;
- if (CWIDTH[j] === "auto" && !hasFit) cell.width = "";
- else if (CWIDTH[j] === "fit") cell.width = "";
- else if (CWIDTH[j].match(/%$/)) cell.width = CWIDTH[j];
- else cell.minWidth = cell.maxWidth = cell.width;
- }
- } else {
- //
- // Compute percentage widths
- //
- if (WW > TW) {
- var extra = 0;
- for (i = 0, m = percent.length; i < m; i++) {
- j = percent[i];
- w = Math.max(W[j],this.CHTMLlength2em(CWIDTH[j],WW));
- extra += w-W[j]; W[j] = w;
- row[j].style.width = CHTML.Em(w);
- }
- TW += extra;
- }
- //
- // Compute "fit" widths
- //
- if (!hasFit) fit = auto;
- if (WW > TW && fit.length) {
- var dw = (WW - TW) / fit.length;
- for (i = 0, m = fit.length; i < m; i++) {
- j = fit[i]; W[j] += dw;
- row[j].style.width = CHTML.Em(W[j]);
- }
- TW = WW;
- }
- }
- }
- W[LABEL] = state.W[LABEL];
- state.W = W;
- state.R = TW;
- //
- // Set variable width on DOM nodes
- //
- if (relWidth) {
- this.CHTML.pwidth = values.width; this.CHTML.mwidth = CHTML.Em(TW);
- node.style.width = node.firstChild.style.width = "100%";
- }
- },
- //
- // Stretch any cells that can be stretched
- //
- CHTMLstretchCells: function (values,state) {
- var ROWS = state.rows, H = state.H, D = state.D, W = state.W,
- J = state.J, M = ROWS.length-1;
- for (var i = 0; i <= M; i++) {
- var row = ROWS[i], rdata = this.data[i];
- var h = H[i], d = D[i];
- for (var j = 0; j <= J; j++) {
- var cell = row[j], cdata = rdata.data[j];
- if (!cdata) continue;
- if (cdata.CHTML.stretch === "V") cdata.CHTMLstretchV(h,d);
- else if (cdata.CHTML.stretch === "H") cdata.CHTMLstretchH(cell,W[j]);
- }
- }
- },
- //
- // Add labels to a table
- //
- CHTMLaddLabels: function (values,state,node,table) {
- //
- // Get indentation and alignment
- //
- var indent = this.getValues("indentalignfirst","indentshiftfirst","indentalign","indentshift");
- if (indent.indentalignfirst !== MML.INDENTALIGN.INDENTALIGN) indent.indentalign = indent.indentalignfirst;
- if (indent.indentalign === MML.INDENTALIGN.AUTO) indent.indentalign = CONFIG.displayAlign;
- if (indent.indentshiftfirst !== MML.INDENTSHIFT.INDENTSHIFT) indent.indentshift = indent.indentshiftfirst;
- if (indent.indentshift === "auto") indent.indentshift = "0";
- var shift = this.CHTMLlength2em(indent.indentshift,CHTML.cwidth);
- var labelspace = this.CHTMLlength2em(values.minlabelspacing,.8);
- var labelW = labelspace + state.W[LABEL], labelshift = 0, tw = state.R;
- var dIndent = this.CHTMLlength2em(CONFIG.displayIndent,CHTML.cwidth);
- var s = (state.CALIGN[LABEL] === MML.INDENTALIGN.RIGHT ? -1 : 1);
- if (indent.indentalign === MML.INDENTALIGN.CENTER) {
- tw += 2 * (labelW - s*(shift + dIndent));
- shift += dIndent;
- } else if (state.CALIGN[LABEL] === indent.indentalign) {
- if (dIndent < 0) {labelshift = s*dIndent; dIndent = 0}
- shift += s*dIndent; if (labelW > s*shift) shift = s*labelW; shift += labelshift;
- shift *= s; tw += shift;
- } else {
- tw += labelW - s*shift + dIndent;
- shift -= s*dIndent; shift *= -s;
- }
- //
- // Create boxes for table and labels
- //
- var box = CHTML.addElement(node,"mjx-box",{
- style:{width:"100%","text-align":indent.indentalign}
- }); box.appendChild(table);
- var labels = CHTML.Element("mjx-itable");
- table.style.display = "inline-table"; if (!table.style.width) table.style.width = "auto";
- labels.style.verticalAlign = "top";
- table.style.verticalAlign = CHTML.Em(state.T-state.B-state.H[0]);
- node.style.verticalAlign = "";
- if (shift) {
- if (indent.indentalign === MML.INDENTALIGN.CENTER) {
- table.style.marginLeft = CHTML.Em(shift);
- table.style.marginRight = CHTML.Em(-shift);
- } else {
- var margin = "margin" + (indent.indentalign === MML.INDENTALIGN.RIGHT ? "Right" : "Left");
- table.style[margin] = CHTML.Em(shift);
- }
- }
- //
- // Add labels on correct side
- //
- if (state.CALIGN[LABEL] === "left") {
- node.insertBefore(labels,box);
- labels.style.marginRight = CHTML.Em(-state.W[LABEL]-labelshift);
- if (labelshift) labels.style.marginLeft = CHTML.Em(labelshift);
- } else {
- node.appendChild(labels);
- labels.style.marginLeft = CHTML.Em(-state.W[LABEL]+labelshift);
- }
- //
- // Vertically align the labels with their rows
- //
- var LABELS = state.labels, T = 0;
- if (values.fspace) T = state.FSPACE[0] + (values.frame ? 1/CHTML.em : 0);
- for (var i = 0, m = LABELS.length; i < m; i++) {
- if (LABELS[i] && this.data[i].data[0]) {
- labels.appendChild(LABELS[i]);
- var lbox = this.data[i].data[0].CHTML;
- T = state.RH[i] - Math.max(1,lbox.h);
- if (T) LABELS[i].firstChild.firstChild.style.marginTop = CHTML.Em(T);
- LABELS[i].style.height = CHTML.Em(state.RHD[i]);
- } else {
- CHTML.addElement(labels,"mjx-label",{style:{height:CHTML.Em(state.RHD[i])}});
- }
- }
- //
- // Propagate full-width equations, and reserve room for equation plus label
- //
- node.style.width = this.CHTML.pwidth = "100%";
- node.style.minWidth = this.CHTML.mwidth = CHTML.Em(Math.max(0,tw));
- }
- });
-
- MML.mtr.Augment({
- toCommonHTML: function (node,options) {
- //
- // Create the row node
- //
- node = this.CHTMLcreateNode(node);
- this.CHTMLhandleStyle(node);
- this.CHTMLhandleScale(node);
- //
- // Add a new row with no label
- //
- if (!options) options = {rows:[],labels:[]};
- var row = []; options.rows.push(row); row.node = node;
- options.labels.push(null);
- //
- // Add the cells to the row
- //
- for (var i = 0, m = this.data.length; i < m; i++)
- row.push(this.CHTMLaddChild(node,i,options));
- //
- this.CHTMLhandleColor(node);
- return node;
- }
- });
- MML.mlabeledtr.Augment({
- toCommonHTML: function (node,options) {
- //
- // Create the row node
- //
- node = this.CHTMLcreateNode(node);
- this.CHTMLhandleStyle(node);
- this.CHTMLhandleScale(node);
- //
- // Add a new row, and get the label
- //
- if (!options) options = {rows:[],labels:[]};
- var row = []; options.rows.push(row); row.node = node;
- var label = CHTML.Element("mjx-label"); options.labels.push(label);
- this.CHTMLaddChild(label,0,options);
- if (this.data[0]) options.labeled = true;
- //
- // Add the cells to the row
- //
- for (var i = 1, m = this.data.length; i < m; i++)
- row.push(this.CHTMLaddChild(node,i,options));
- //
- this.CHTMLhandleColor(node);
- return node;
- }
- });
- MML.mtd.Augment({
- toCommonHTML: function (node,options) {
- node = this.CHTMLdefaultNode(node,options);
- CHTML.addElement(node.firstChild,"mjx-strut"); // forces height to 1em (we adjust later)
- //
- // Determine if this is stretchy or not
- //
- if (this.isEmbellished()) {
- var mo = this.CoreMO(), BBOX = this.CHTML;
- if (mo.CHTMLcanStretch("Vertical")) BBOX.stretch = "V";
- else if (mo.CHTMLcanStretch("Horizontal")) BBOX.stretch = "H";
- if (BBOX.stretch) {
- var min = mo.Get("minsize",true);
- if (min) {
- if (BBOX.stretch === "V") {
- var HD = BBOX.h + BBOX.d;
- if (HD) {
- var r = this.CHTMLlength2em(min,HD)/HD;
- if (r > 1) {BBOX.h *= r; BBOX.d *= r}
- }
- } else {
- BBOX.w = Math.max(BBOX.w,this.CHTMLlength2em(min,BBOX.w));
- }
- }
- }
- }
- return node;
- }
- });
-
- MathJax.Hub.Startup.signal.Post("CommonHTML mtable Ready");
- MathJax.Ajax.loadComplete(CHTML.autoloadDir+"/mtable.js");
- });
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