--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.cms/lib/codemirror/keymap/emacs.js	Fri Oct 11 22:40:23 2024 +0000
@@ -0,0 +1,545 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/5/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+  "use strict";
+
+  var cmds = CodeMirror.commands;
+  var Pos = CodeMirror.Pos;
+  function posEq(a, b) { return a.line == b.line && a.ch == b.ch; }
+
+  // Kill 'ring'
+
+  var killRing = [];
+  function addToRing(str) {
+    killRing.push(str);
+    if (killRing.length > 50) killRing.shift();
+  }
+  function growRingTop(str) {
+    if (!killRing.length) return addToRing(str);
+    killRing[killRing.length - 1] += str;
+  }
+  function getFromRing(n) { return killRing[killRing.length - (n ? Math.min(n, 1) : 1)] || ""; }
+  function popFromRing() { if (killRing.length > 1) killRing.pop(); return getFromRing(); }
+
+  var lastKill = null;
+
+  // Internal generic kill function, used by several mapped kill "family" functions.
+  function _kill(cm, from, to, ring, text) {
+    if (text == null) text = cm.getRange(from, to);
+
+    if (ring == "grow" && lastKill && lastKill.cm == cm && posEq(from, lastKill.pos) && cm.isClean(lastKill.gen))
+      growRingTop(text);
+    else if (ring !== false)
+      addToRing(text);
+    cm.replaceRange("", from, to, "+delete");
+
+    if (ring == "grow") lastKill = {cm: cm, pos: from, gen: cm.changeGeneration()};
+    else lastKill = null;
+  }
+
+  // Boundaries of various units
+
+  function byChar(cm, pos, dir) {
+    return cm.findPosH(pos, dir, "char", true);
+  }
+
+  function byWord(cm, pos, dir) {
+    return cm.findPosH(pos, dir, "word", true);
+  }
+
+  function byLine(cm, pos, dir) {
+    return cm.findPosV(pos, dir, "line", cm.doc.sel.goalColumn);
+  }
+
+  function byPage(cm, pos, dir) {
+    return cm.findPosV(pos, dir, "page", cm.doc.sel.goalColumn);
+  }
+
+  function byParagraph(cm, pos, dir) {
+    var no = pos.line, line = cm.getLine(no);
+    var sawText = /\S/.test(dir < 0 ? line.slice(0, pos.ch) : line.slice(pos.ch));
+    var fst = cm.firstLine(), lst = cm.lastLine();
+    for (;;) {
+      no += dir;
+      if (no < fst || no > lst)
+        return cm.clipPos(Pos(no - dir, dir < 0 ? 0 : null));
+      line = cm.getLine(no);
+      var hasText = /\S/.test(line);
+      if (hasText) sawText = true;
+      else if (sawText) return Pos(no, 0);
+    }
+  }
+
+  function bySentence(cm, pos, dir) {
+    var line = pos.line, ch = pos.ch;
+    var text = cm.getLine(pos.line), sawWord = false;
+    for (;;) {
+      var next = text.charAt(ch + (dir < 0 ? -1 : 0));
+      if (!next) { // End/beginning of line reached
+        if (line == (dir < 0 ? cm.firstLine() : cm.lastLine())) return Pos(line, ch);
+        text = cm.getLine(line + dir);
+        if (!/\S/.test(text)) return Pos(line, ch);
+        line += dir;
+        ch = dir < 0 ? text.length : 0;
+        continue;
+      }
+      if (sawWord && /[!?.]/.test(next)) return Pos(line, ch + (dir > 0 ? 1 : 0));
+      if (!sawWord) sawWord = /\w/.test(next);
+      ch += dir;
+    }
+  }
+
+  function byExpr(cm, pos, dir) {
+    var wrap;
+    if (cm.findMatchingBracket && (wrap = cm.findMatchingBracket(pos, {strict: true}))
+        && wrap.match && (wrap.forward ? 1 : -1) == dir)
+      return dir > 0 ? Pos(wrap.to.line, wrap.to.ch + 1) : wrap.to;
+
+    for (var first = true;; first = false) {
+      var token = cm.getTokenAt(pos);
+      var after = Pos(pos.line, dir < 0 ? token.start : token.end);
+      if (first && dir > 0 && token.end == pos.ch || !/\w/.test(token.string)) {
+        var newPos = cm.findPosH(after, dir, "char");
+        if (posEq(after, newPos)) return pos;
+        else pos = newPos;
+      } else {
+        return after;
+      }
+    }
+  }
+
+  // Prefixes (only crudely supported)
+
+  function getPrefix(cm, precise) {
+    var digits = cm.state.emacsPrefix;
+    if (!digits) return precise ? null : 1;
+    clearPrefix(cm);
+    return digits == "-" ? -1 : Number(digits);
+  }
+
+  function repeated(cmd) {
+    var f = typeof cmd == "string" ? function(cm) { cm.execCommand(cmd); } : cmd;
+    return function(cm) {
+      var prefix = getPrefix(cm);
+      f(cm);
+      for (var i = 1; i < prefix; ++i) f(cm);
+    };
+  }
+
+  function findEnd(cm, pos, by, dir) {
+    var prefix = getPrefix(cm);
+    if (prefix < 0) { dir = -dir; prefix = -prefix; }
+    for (var i = 0; i < prefix; ++i) {
+      var newPos = by(cm, pos, dir);
+      if (posEq(newPos, pos)) break;
+      pos = newPos;
+    }
+    return pos;
+  }
+
+  function move(by, dir) {
+    var f = function(cm) {
+      cm.extendSelection(findEnd(cm, cm.getCursor(), by, dir));
+    };
+    f.motion = true;
+    return f;
+  }
+
+  function killTo(cm, by, dir, ring) {
+    var selections = cm.listSelections(), cursor;
+    var i = selections.length;
+    while (i--) {
+      cursor = selections[i].head;
+      _kill(cm, cursor, findEnd(cm, cursor, by, dir), ring);
+    }
+  }
+
+  function _killRegion(cm, ring) {
+    if (cm.somethingSelected()) {
+      var selections = cm.listSelections(), selection;
+      var i = selections.length;
+      while (i--) {
+        selection = selections[i];
+        _kill(cm, selection.anchor, selection.head, ring);
+      }
+      return true;
+    }
+  }
+
+  function addPrefix(cm, digit) {
+    if (cm.state.emacsPrefix) {
+      if (digit != "-") cm.state.emacsPrefix += digit;
+      return;
+    }
+    // Not active yet
+    cm.state.emacsPrefix = digit;
+    cm.on("keyHandled", maybeClearPrefix);
+    cm.on("inputRead", maybeDuplicateInput);
+  }
+
+  var prefixPreservingKeys = {"Alt-G": true, "Ctrl-X": true, "Ctrl-Q": true, "Ctrl-U": true};
+
+  function maybeClearPrefix(cm, arg) {
+    if (!cm.state.emacsPrefixMap && !prefixPreservingKeys.hasOwnProperty(arg))
+      clearPrefix(cm);
+  }
+
+  function clearPrefix(cm) {
+    cm.state.emacsPrefix = null;
+    cm.off("keyHandled", maybeClearPrefix);
+    cm.off("inputRead", maybeDuplicateInput);
+  }
+
+  function maybeDuplicateInput(cm, event) {
+    var dup = getPrefix(cm);
+    if (dup > 1 && event.origin == "+input") {
+      var one = event.text.join("\n"), txt = "";
+      for (var i = 1; i < dup; ++i) txt += one;
+      cm.replaceSelection(txt);
+    }
+  }
+
+  function maybeRemovePrefixMap(cm, arg) {
+    if (typeof arg == "string" && (/^\d$/.test(arg) || arg == "Ctrl-U")) return;
+    cm.removeKeyMap(prefixMap);
+    cm.state.emacsPrefixMap = false;
+    cm.off("keyHandled", maybeRemovePrefixMap);
+    cm.off("inputRead", maybeRemovePrefixMap);
+  }
+
+  // Utilities
+
+  cmds.setMark = function (cm) {
+    cm.setCursor(cm.getCursor());
+    cm.setExtending(!cm.getExtending());
+    cm.on("change", function() { cm.setExtending(false); });
+  }
+
+  function clearMark(cm) {
+    cm.setExtending(false);
+    cm.setCursor(cm.getCursor());
+  }
+
+  function makePrompt(msg) {
+    var fragment = document.createDocumentFragment();
+    var input = document.createElement("input");
+    input.setAttribute("type", "text");
+    input.style.width = "10em";
+    fragment.appendChild(document.createTextNode(msg + ": "));
+    fragment.appendChild(input);
+    return fragment;
+  }
+
+  function getInput(cm, msg, f) {
+    if (cm.openDialog)
+      cm.openDialog(makePrompt(msg), f, {bottom: true});
+    else
+      f(prompt(msg, ""));
+  }
+
+  function operateOnWord(cm, op) {
+    var start = cm.getCursor(), end = cm.findPosH(start, 1, "word");
+    cm.replaceRange(op(cm.getRange(start, end)), start, end);
+    cm.setCursor(end);
+  }
+
+  function toEnclosingExpr(cm) {
+    var pos = cm.getCursor(), line = pos.line, ch = pos.ch;
+    var stack = [];
+    while (line >= cm.firstLine()) {
+      var text = cm.getLine(line);
+      for (var i = ch == null ? text.length : ch; i > 0;) {
+        var ch = text.charAt(--i);
+        if (ch == ")")
+          stack.push("(");
+        else if (ch == "]")
+          stack.push("[");
+        else if (ch == "}")
+          stack.push("{");
+        else if (/[\(\{\[]/.test(ch) && (!stack.length || stack.pop() != ch))
+          return cm.extendSelection(Pos(line, i));
+      }
+      --line; ch = null;
+    }
+  }
+
+  // Commands. Names should match emacs function names (albeit in camelCase)
+  // except where emacs function names collide with code mirror core commands.
+
+  cmds.killRegion = function(cm) {
+    _kill(cm, cm.getCursor("start"), cm.getCursor("end"), true);
+  };
+
+  // Maps to emacs kill-line
+  cmds.killLineEmacs = repeated(function(cm) {
+    var start = cm.getCursor(), end = cm.clipPos(Pos(start.line));
+    var text = cm.getRange(start, end);
+    if (!/\S/.test(text)) {
+      text += "\n";
+      end = Pos(start.line + 1, 0);
+    }
+    _kill(cm, start, end, "grow", text);
+  });
+
+  cmds.killRingSave = function(cm) {
+    addToRing(cm.getSelection());
+    clearMark(cm);
+  };
+
+  cmds.yank = function(cm) {
+    var start = cm.getCursor();
+    cm.replaceRange(getFromRing(getPrefix(cm)), start, start, "paste");
+    cm.setSelection(start, cm.getCursor());
+  };
+
+  cmds.yankPop = function(cm) {
+    cm.replaceSelection(popFromRing(), "around", "paste");
+  };
+
+  cmds.forwardChar = move(byChar, 1);
+
+  cmds.backwardChar = move(byChar, -1)
+
+  cmds.deleteChar = function(cm) { killTo(cm, byChar, 1, false); };
+
+  cmds.deleteForwardChar = function(cm) {
+    _killRegion(cm, false) || killTo(cm, byChar, 1, false);
+  };
+
+  cmds.deleteBackwardChar = function(cm) {
+    _killRegion(cm, false) || killTo(cm, byChar, -1, false);
+  };
+
+  cmds.forwardWord = move(byWord, 1);
+
+  cmds.backwardWord = move(byWord, -1);
+
+  cmds.killWord = function(cm) { killTo(cm, byWord, 1, "grow"); };
+
+  cmds.backwardKillWord = function(cm) { killTo(cm, byWord, -1, "grow"); };
+
+  cmds.nextLine = move(byLine, 1);
+
+  cmds.previousLine = move(byLine, -1);
+
+  cmds.scrollDownCommand = move(byPage, -1);
+
+  cmds.scrollUpCommand = move(byPage, 1);
+
+  cmds.backwardParagraph = move(byParagraph, -1);
+
+  cmds.forwardParagraph = move(byParagraph, 1);
+
+  cmds.backwardSentence = move(bySentence, -1);
+
+  cmds.forwardSentence = move(bySentence, 1);
+
+  cmds.killSentence = function(cm) { killTo(cm, bySentence, 1, "grow"); };
+
+  cmds.backwardKillSentence = function(cm) {
+    _kill(cm, cm.getCursor(), bySentence(cm, cm.getCursor(), 1), "grow");
+  };
+
+  cmds.killSexp = function(cm) { killTo(cm, byExpr, 1, "grow"); };
+
+  cmds.backwardKillSexp = function(cm) { killTo(cm, byExpr, -1, "grow"); };
+
+  cmds.forwardSexp = move(byExpr, 1);
+
+  cmds.backwardSexp = move(byExpr, -1);
+
+  cmds.markSexp = function(cm) {
+    var cursor = cm.getCursor();
+    cm.setSelection(findEnd(cm, cursor, byExpr, 1), cursor);
+  };
+
+  cmds.transposeSexps = function(cm) {
+    var leftStart = byExpr(cm, cm.getCursor(), -1);
+    var leftEnd = byExpr(cm, leftStart, 1);
+    var rightEnd = byExpr(cm, leftEnd, 1);
+    var rightStart = byExpr(cm, rightEnd, -1);
+    cm.replaceRange(cm.getRange(rightStart, rightEnd) +
+                    cm.getRange(leftEnd, rightStart) +
+                    cm.getRange(leftStart, leftEnd), leftStart, rightEnd);
+  };
+
+  cmds.backwardUpList = repeated(toEnclosingExpr);
+
+  cmds.justOneSpace = function(cm) {
+    var pos = cm.getCursor(), from = pos.ch;
+    var to = pos.ch, text = cm.getLine(pos.line);
+    while (from && /\s/.test(text.charAt(from - 1))) --from;
+    while (to < text.length && /\s/.test(text.charAt(to))) ++to;
+    cm.replaceRange(" ", Pos(pos.line, from), Pos(pos.line, to));
+  };
+
+  cmds.openLine = repeated(function(cm) {
+    cm.replaceSelection("\n", "start");
+  });
+
+  // maps to emacs 'transpose-chars'
+  cmds.transposeCharsRepeatable = repeated(function(cm) {
+    cm.execCommand("transposeChars");
+  });
+
+  cmds.capitalizeWord = repeated(function(cm) {
+    operateOnWord(cm, function(w) {
+      var letter = w.search(/\w/);
+      if (letter == -1) return w;
+      return w.slice(0, letter) + w.charAt(letter).toUpperCase() +
+          w.slice(letter + 1).toLowerCase();
+    });
+  });
+
+  cmds.upcaseWord = repeated(function(cm) {
+    operateOnWord(cm, function(w) { return w.toUpperCase(); });
+  });
+
+  cmds.downcaseWord = repeated(function(cm) {
+    operateOnWord(cm, function(w) { return w.toLowerCase(); });
+  });
+
+  // maps to emacs 'undo'
+  cmds.undoRepeatable = repeated("undo");
+
+  cmds.keyboardQuit = function(cm) {
+    cm.execCommand("clearSearch");
+    clearMark(cm);
+  }
+
+  cmds.newline = repeated(function(cm) { cm.replaceSelection("\n", "end"); });
+
+  cmds.gotoLine = function(cm) {
+    var prefix = getPrefix(cm, true);
+    if (prefix != null && prefix > 0) return cm.setCursor(prefix - 1);
+
+    getInput(cm, "Goto line", function(str) {
+      var num;
+      if (str && !isNaN(num = Number(str)) && num == (num|0) && num > 0)
+      cm.setCursor(num - 1);
+    });
+  };
+
+  cmds.indentRigidly = function(cm) {
+    cm.indentSelection(getPrefix(cm, true) || cm.getOption("indentUnit"));
+  };
+
+  cmds.exchangePointAndMark = function(cm) {
+    cm.setSelection(cm.getCursor("head"), cm.getCursor("anchor"));
+  };
+
+  cmds.quotedInsertTab = repeated("insertTab");
+
+  cmds.universalArgument = function addPrefixMap(cm) {
+    cm.state.emacsPrefixMap = true;
+    cm.addKeyMap(prefixMap);
+    cm.on("keyHandled", maybeRemovePrefixMap);
+    cm.on("inputRead", maybeRemovePrefixMap);
+  };
+
+  CodeMirror.emacs = {kill: _kill, killRegion: _killRegion, repeated: repeated};
+
+  // Actual keymap
+  var keyMap = CodeMirror.keyMap.emacs = CodeMirror.normalizeKeyMap({
+    "Ctrl-W": "killRegion",
+    "Ctrl-K": "killLineEmacs",
+    "Alt-W": "killRingSave",
+    "Ctrl-Y": "yank",
+    "Alt-Y": "yankPop",
+    "Ctrl-Space": "setMark",
+    "Ctrl-Shift-2": "setMark",
+    "Ctrl-F": "forwardChar",
+    "Ctrl-B": "backwardChar",
+    "Right": "forwardChar",
+    "Left": "backwardChar",
+    "Ctrl-D": "deleteChar",
+    "Delete": "deleteForwardChar",
+    "Ctrl-H": "deleteBackwardChar",
+    "Backspace": "deleteBackwardChar",
+    "Alt-F": "forwardWord",
+    "Alt-B": "backwardWord",
+    "Alt-Right": "forwardWord",
+    "Alt-Left": "backwardWord",
+    "Alt-D": "killWord",
+    "Alt-Backspace": "backwardKillWord",
+    "Ctrl-N": "nextLine",
+    "Ctrl-P": "previousLine",
+    "Down": "nextLine",
+    "Up": "previousLine",
+    "Ctrl-A": "goLineStart",
+    "Ctrl-E": "goLineEnd",
+    "End": "goLineEnd",
+    "Home": "goLineStart",
+    "Alt-V": "scrollDownCommand",
+    "Ctrl-V": "scrollUpCommand",
+    "PageUp": "scrollDownCommand",
+    "PageDown": "scrollUpCommand",
+    "Ctrl-Up": "backwardParagraph",
+    "Ctrl-Down": "forwardParagraph",
+    "Alt-{": "backwardParagraph",
+    "Alt-}": "forwardParagraph",
+    "Alt-A": "backwardSentence",
+    "Alt-E": "forwardSentence",
+    "Alt-K": "killSentence",
+    "Ctrl-X Delete": "backwardKillSentence",
+    "Ctrl-Alt-K": "killSexp",
+    "Ctrl-Alt-Backspace": "backwardKillSexp",
+    "Ctrl-Alt-F": "forwardSexp",
+    "Ctrl-Alt-B": "backwardSexp",
+    "Shift-Ctrl-Alt-2": "markSexp",
+    "Ctrl-Alt-T": "transposeSexps",
+    "Ctrl-Alt-U": "backwardUpList",
+    "Alt-Space": "justOneSpace",
+    "Ctrl-O": "openLine",
+    "Ctrl-T": "transposeCharsRepeatable",
+    "Alt-C": "capitalizeWord",
+    "Alt-U": "upcaseWord",
+    "Alt-L": "downcaseWord",
+    "Alt-;": "toggleComment",
+    "Ctrl-/": "undoRepeatable",
+    "Shift-Ctrl--": "undoRepeatable",
+    "Ctrl-Z": "undoRepeatable",
+    "Cmd-Z": "undoRepeatable",
+    "Ctrl-X U": "undoRepeatable",
+    "Shift-Ctrl-Z": "redo",
+    "Shift-Alt-,": "goDocStart",
+    "Shift-Alt-.": "goDocEnd",
+    "Ctrl-S": "findPersistentNext",
+    "Ctrl-R": "findPersistentPrev",
+    "Ctrl-G": "keyboardQuit",
+    "Shift-Alt-5": "replace",
+    "Alt-/": "autocomplete",
+    "Enter": "newlineAndIndent",
+    "Ctrl-J": "newline",
+    "Tab": "indentAuto",
+    "Alt-G G": "gotoLine",
+    "Ctrl-X Tab": "indentRigidly",
+    "Ctrl-X Ctrl-X": "exchangePointAndMark",
+    "Ctrl-X Ctrl-S": "save",
+    "Ctrl-X Ctrl-W": "save",
+    "Ctrl-X S": "saveAll",
+    "Ctrl-X F": "open",
+    "Ctrl-X K": "close",
+    "Ctrl-X H": "selectAll",
+    "Ctrl-Q Tab": "quotedInsertTab",
+    "Ctrl-U": "universalArgument",
+    "fallthrough": "default"
+  });
+
+  var prefixMap = {"Ctrl-G": clearPrefix};
+  function regPrefix(d) {
+    prefixMap[d] = function(cm) { addPrefix(cm, d); };
+    keyMap["Ctrl-" + d] = function(cm) { addPrefix(cm, d); };
+    prefixPreservingKeys["Ctrl-" + d] = true;
+  }
+  for (var i = 0; i < 10; ++i) regPrefix(String(i));
+  regPrefix("-");
+});