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CodeMirror, copyright (c) by Marijn Haverbeke and others\n// Distributed under an MIT license: https://codemirror.net/LICENSE\n\n(function(mod) {\n if (typeof exports == \"object\" && typeof module == \"object\") // CommonJS\n mod(require(\"../lib/codemirror\"));\n else if (typeof define == \"function\" && define.amd) // AMD\n define([\"../lib/codemirror\"], mod);\n else // Plain browser env\n mod(CodeMirror);\n})(function(CodeMirror) {\n \"use strict\";\n\n var Pos = CodeMirror.Pos;\n function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }\n\n // Kill 'ring'\n\n var killRing = [];\n function addToRing(str) {\n killRing.push(str);\n if (killRing.length > 50) killRing.shift();\n }\n function growRingTop(str) {\n if (!killRing.length) return addToRing(str);\n killRing[killRing.length - 1] += str;\n }\n function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || \"\"; }\n function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }\n\n var lastKill = null;\n\n function kill(cm, from, to, ring, text) {\n if (text == null) text = cm.getRange(from, to);\n\n if (ring == \"grow\" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))\n growRingTop(text);\n else if (ring !== false)\n addToRing(text);\n cm.replaceRange(\"\", from, to, \"+delete\");\n\n if (ring == \"grow\") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};\n else lastKill = null;\n }\n\n // Boundaries of various units\n\n function byChar(cm, pos, dir) {\n return cm.findPosH(pos, dir, \"char\", true);\n }\n\n function byWord(cm, pos, dir) {\n return cm.findPosH(pos, dir, \"word\", true);\n }\n\n function byLine(cm, pos, dir) {\n return cm.findPosV(pos, dir, \"line\", cm.doc.sel.goalColumn);\n }\n\n function byPage(cm, pos, dir) {\n return cm.findPosV(pos, dir, \"page\", cm.doc.sel.goalColumn);\n }\n\n function byParagraph(cm, pos, dir) {\n var no = pos.line, line = cm.getLine(no);\n var sawText = /\\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));\n var fst = cm.firstLine(), lst = cm.lastLine();\n for (;;) {\n no += dir;\n if (no < fst || no > lst)\n return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));\n line = cm.getLine(no);\n var hasText = /\\S/.test(line);\n if (hasText) sawText = true;\n else if (sawText) return Pos(no, 0);\n }\n }\n\n function bySentence(cm, pos, dir) {\n var line = pos.line, ch = pos.ch;\n var text = cm.getLine(pos.line), sawWord = false;\n for (;;) {\n var next = text.charAt(ch + (dir < 0 ? -1 : 0));\n if (!next) { // End/beginning of line reached\n if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);\n text = cm.getLine(line + dir);\n if (!/\\S/.test(text)) return Pos(line, ch);\n line += dir;\n ch = dir < 0 ? text.length : 0;\n continue;\n }\n if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));\n if (!sawWord) sawWord = /\\w/.test(next);\n ch += dir;\n }\n }\n\n function byExpr(cm, pos, dir) {\n var wrap;\n if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))\n && wrap.match && (wrap.forward ? 1 : -1) == dir)\n return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;\n\n for (var first = true;; first = false) {\n var token = cm.getTokenAt(pos);\n var after = Pos(pos.line, dir < 0 ? token.start : token.end);\n if (first && dir > 0 && token.end == pos.ch || !/\\w/.test(token.string)) {\n var newPos = cm.findPosH(after, dir, \"char\");\n if (posEq(after, newPos)) return pos;\n else pos = newPos;\n } else {\n return after;\n }\n }\n }\n\n // Prefixes (only crudely supported)\n\n function getPrefix(cm, precise) {\n var digits = cm.state.emacsPrefix;\n if (!digits) return precise ? null : 1;\n clearPrefix(cm);\n return digits == \"-\" ? -1 : Number(digits);\n }\n\n function repeated(cmd) {\n var f = typeof cmd == \"string\" ? function(cm) { cm.execCommand(cmd); } : cmd;\n return function(cm) {\n var prefix = getPrefix(cm);\n f(cm);\n for (var i = 1; i < prefix; ++i) f(cm);\n };\n }\n\n function findEnd(cm, pos, by, dir) {\n var prefix = getPrefix(cm);\n if (prefix < 0) { dir = -dir; prefix = -prefix; }\n for (var i = 0; i < prefix; ++i) {\n var newPos = by(cm, pos, dir);\n if (posEq(newPos, pos)) break;\n pos = newPos;\n }\n return pos;\n }\n\n function move(by, dir) {\n var f = function(cm) {\n cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));\n };\n f.motion = true;\n return f;\n }\n\n function killTo(cm, by, dir, ring) {\n var selections = cm.listSelections(), cursor;\n var i = selections.length;\n while (i--) {\n cursor = selections[i].head;\n kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);\n }\n }\n\n function killRegion(cm, ring) {\n if (cm.somethingSelected()) {\n var selections = cm.listSelections(), selection;\n var i = selections.length;\n while (i--) {\n selection = selections[i];\n kill(cm, selection.anchor, selection.head, ring);\n }\n return true;\n }\n }\n\n function addPrefix(cm, digit) {\n if (cm.state.emacsPrefix) {\n if (digit != \"-\") cm.state.emacsPrefix += digit;\n return;\n }\n // Not active yet\n cm.state.emacsPrefix = digit;\n cm.on(\"keyHandled\", maybeClearPrefix);\n cm.on(\"inputRead\", maybeDuplicateInput);\n }\n\n var prefixPreservingKeys = {\"Alt-G\": true, \"Ctrl-X\": true, \"Ctrl-Q\": true, \"Ctrl-U\": true};\n\n function maybeClearPrefix(cm, arg) {\n if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))\n clearPrefix(cm);\n }\n\n function clearPrefix(cm) {\n cm.state.emacsPrefix = null;\n cm.off(\"keyHandled\", maybeClearPrefix);\n cm.off(\"inputRead\", maybeDuplicateInput);\n }\n\n function maybeDuplicateInput(cm, event) {\n var dup = getPrefix(cm);\n if (dup > 1 && event.origin == \"+input\") {\n var one = event.text.join(\"\\n\"), txt = \"\";\n for (var i = 1; i < dup; ++i) txt += one;\n cm.replaceSelection(txt);\n }\n }\n\n function addPrefixMap(cm) {\n cm.state.emacsPrefixMap = true;\n cm.addKeyMap(prefixMap);\n cm.on(\"keyHandled\", maybeRemovePrefixMap);\n cm.on(\"inputRead\", maybeRemovePrefixMap);\n }\n\n function maybeRemovePrefixMap(cm, arg) {\n if (typeof arg == \"string\" && (/^\\d$/.test(arg) || arg == \"Ctrl-U\")) return;\n cm.removeKeyMap(prefixMap);\n cm.state.emacsPrefixMap = false;\n cm.off(\"keyHandled\", maybeRemovePrefixMap);\n cm.off(\"inputRead\", maybeRemovePrefixMap);\n }\n\n // Utilities\n\n function setMark(cm) {\n cm.setCursor(cm.getCursor());\n cm.setExtending(!cm.getExtending());\n cm.on(\"change\", function() { cm.setExtending(false); });\n }\n\n function clearMark(cm) {\n cm.setExtending(false);\n cm.setCursor(cm.getCursor());\n }\n\n function getInput(cm, msg, f) {\n if (cm.openDialog)\n cm.openDialog(msg + \": <input type=\\\"text\\\" style=\\\"width: 10em\\\"/>\", f, {bottom: true});\n else\n f(prompt(msg, \"\"));\n }\n\n function operateOnWord(cm, op) {\n var start = cm.getCursor(), end = cm.findPosH(start, 1, \"word\");\n cm.replaceRange(op(cm.getRange(start, end)), start, end);\n cm.setCursor(end);\n }\n\n function toEnclosingExpr(cm) {\n var pos = cm.getCursor(), line = pos.line, ch = pos.ch;\n var stack = [];\n while (line >= cm.firstLine()) {\n var text = cm.getLine(line);\n for (var i = ch == null ? text.length : ch; i > 0;) {\n var ch = text.charAt(--i);\n if (ch == \")\")\n stack.push(\"(\");\n else if (ch == \"]\")\n stack.push(\"[\");\n else if (ch == \"}\")\n stack.push(\"{\");\n else if (/[\\(\\{\\[]/.test(ch) && (!stack.length || stack.pop() != ch))\n return cm.extendSelection(Pos(line, i));\n }\n --line; ch = null;\n }\n }\n\n function quit(cm) {\n cm.execCommand(\"clearSearch\");\n clearMark(cm);\n }\n\n CodeMirror.emacs = {kill: kill, killRegion: killRegion, repeated: repeated};\n\n // Actual keymap\n\n var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({\n \"Ctrl-W\": function(cm) {kill(cm, cm.getCursor(\"start\"), cm.getCursor(\"end\"), true);},\n \"Ctrl-K\": repeated(function(cm) {\n var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));\n var text = cm.getRange(start, end);\n if (!/\\S/.test(text)) {\n text += \"\\n\";\n end = Pos(start.line + 1, 0);\n }\n kill(cm, start, end, \"grow\", text);\n }),\n \"Alt-W\": function(cm) {\n addToRing(cm.getSelection());\n clearMark(cm);\n },\n \"Ctrl-Y\": function(cm) {\n var start = cm.getCursor();\n cm.replaceRange(getFromRing(getPrefix(cm)), start, start, \"paste\");\n cm.setSelection(start, cm.getCursor());\n },\n \"Alt-Y\": function(cm) {cm.replaceSelection(popFromRing(), \"around\", \"paste\");},\n\n \"Ctrl-Space\": setMark, \"Ctrl-Shift-2\": setMark,\n\n \"Ctrl-F\": move(byChar, 1), \"Ctrl-B\": move(byChar, -1),\n \"Right\": move(byChar, 1), \"Left\": move(byChar, -1),\n \"Ctrl-D\": function(cm) { killTo(cm, byChar, 1, false); },\n \"Delete\": function(cm) { killRegion(cm, false) || killTo(cm, byChar, 1, false); },\n \"Ctrl-H\": function(cm) { killTo(cm, byChar, -1, false); },\n \"Backspace\": function(cm) { killRegion(cm, false) || killTo(cm, byChar, -1, false); },\n\n \"Alt-F\": move(byWord, 1), \"Alt-B\": move(byWord, -1),\n \"Alt-Right\": move(byWord, 1), \"Alt-Left\": move(byWord, -1),\n \"Alt-D\": function(cm) { killTo(cm, byWord, 1, \"grow\"); },\n \"Alt-Backspace\": function(cm) { killTo(cm, byWord, -1, \"grow\"); },\n\n \"Ctrl-N\": move(byLine, 1), \"Ctrl-P\": move(byLine, -1),\n \"Down\": move(byLine, 1), \"Up\": move(byLine, -1),\n \"Ctrl-A\": \"goLineStart\", \"Ctrl-E\": \"goLineEnd\",\n \"End\": \"goLineEnd\", \"Home\": \"goLineStart\",\n\n \"Alt-V\": move(byPage, -1), \"Ctrl-V\": move(byPage, 1),\n \"PageUp\": move(byPage, -1), \"PageDown\": move(byPage, 1),\n\n \"Ctrl-Up\": move(byParagraph, -1), \"Ctrl-Down\": move(byParagraph, 1),\n\n \"Alt-A\": move(bySentence, -1), \"Alt-E\": move(bySentence, 1),\n \"Alt-K\": function(cm) { killTo(cm, bySentence, 1, \"grow\"); },\n\n \"Ctrl-Alt-K\": function(cm) { killTo(cm, byExpr, 1, \"grow\"); },\n \"Ctrl-Alt-Backspace\": function(cm) { killTo(cm, byExpr, -1, \"grow\"); },\n \"Ctrl-Alt-F\": move(byExpr, 1), \"Ctrl-Alt-B\": move(byExpr, -1, \"grow\"),\n\n \"Shift-Ctrl-Alt-2\": function(cm) {\n var cursor = cm.getCursor();\n cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);\n },\n \"Ctrl-Alt-T\": function(cm) {\n var leftStart = byExpr(cm, cm.getCursor(), -1), leftEnd = byExpr(cm, leftStart, 1);\n var rightEnd = byExpr(cm, leftEnd, 1), rightStart = byExpr(cm, rightEnd, -1);\n cm.replaceRange(cm.getRange(rightStart, rightEnd) + cm.getRange(leftEnd, rightStart) +\n cm.getRange(leftStart, leftEnd), leftStart, rightEnd);\n },\n \"Ctrl-Alt-U\": repeated(toEnclosingExpr),\n\n \"Alt-Space\": function(cm) {\n var pos = cm.getCursor(), from = pos.ch, to = pos.ch, text = cm.getLine(pos.line);\n while (from && /\\s/.test(text.charAt(from - 1))) --from;\n while (to < text.length && /\\s/.test(text.charAt(to))) ++to;\n cm.replaceRange(\" \", Pos(pos.line, from), Pos(pos.line, to));\n },\n \"Ctrl-O\": repeated(function(cm) { cm.replaceSelection(\"\\n\", \"start\"); }),\n \"Ctrl-T\": repeated(function(cm) {\n cm.execCommand(\"transposeChars\");\n }),\n\n \"Alt-C\": repeated(function(cm) {\n operateOnWord(cm, function(w) {\n var letter = w.search(/\\w/);\n if (letter == -1) return w;\n return w.slice(0, letter) + w.charAt(letter).toUpperCase() + w.slice(letter + 1).toLowerCase();\n });\n }),\n \"Alt-U\": repeated(function(cm) {\n operateOnWord(cm, function(w) { return w.toUpperCase(); });\n }),\n \"Alt-L\": repeated(function(cm) {\n operateOnWord(cm, function(w) { return w.toLowerCase(); });\n }),\n\n \"Alt-;\": \"toggleComment\",\n\n \"Ctrl-/\": repeated(\"undo\"), \"Shift-Ctrl--\": repeated(\"undo\"),\n \"Ctrl-Z\": repeated(\"undo\"), \"Cmd-Z\": repeated(\"undo\"),\n \"Shift-Ctrl-Z\": \"redo\",\n \"Shift-Alt-,\": \"goDocStart\", \"Shift-Alt-.\": \"goDocEnd\",\n \"Ctrl-S\": \"findPersistentNext\", \"Ctrl-R\": \"findPersistentPrev\", \"Ctrl-G\": quit, \"Shift-Alt-5\": \"replace\",\n \"Alt-/\": \"autocomplete\",\n \"Enter\": \"newlineAndIndent\",\n \"Ctrl-J\": repeated(function(cm) { cm.replaceSelection(\"\\n\", \"end\"); }),\n \"Tab\": \"indentAuto\",\n\n \"Alt-G G\": function(cm) {\n var prefix = getPrefix(cm, true);\n if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);\n\n getInput(cm, \"Goto line\", function(str) {\n var num;\n if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)\n cm.setCursor(num - 1);\n });\n },\n\n \"Ctrl-X Tab\": function(cm) {\n cm.indentSelection(getPrefix(cm, true) || cm.getOption(\"indentUnit\"));\n },\n \"Ctrl-X Ctrl-X\": function(cm) {\n cm.setSelection(cm.getCursor(\"head\"), cm.getCursor(\"anchor\"));\n },\n \"Ctrl-X Ctrl-S\": \"save\",\n \"Ctrl-X Ctrl-W\": \"save\",\n \"Ctrl-X S\": \"saveAll\",\n \"Ctrl-X F\": \"open\",\n \"Ctrl-X U\": repeated(\"undo\"),\n \"Ctrl-X K\": \"close\",\n \"Ctrl-X Delete\": function(cm) { kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), \"grow\"); },\n \"Ctrl-X H\": \"selectAll\",\n\n \"Ctrl-Q Tab\": repeated(\"insertTab\"),\n \"Ctrl-U\": addPrefixMap,\n \"fallthrough\": \"default\"\n });\n\n var prefixMap = {\"Ctrl-G\": clearPrefix};\n function regPrefix(d) {\n prefixMap[d] = function(cm) { addPrefix(cm, d); };\n keyMap[\"Ctrl-\" + d] = function(cm) { addPrefix(cm, d); };\n prefixPreservingKeys[\"Ctrl-\" + d] = true;\n }\n for (var i = 0; i < 10; ++i) regPrefix(String(i));\n regPrefix(\"-\");\n});\n"]}