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Setup abbreviation behavior to be like an isk-less Vim.

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For now, the internal equivalent of "iskeyword" is [^\s'"].

In the future, the internal "iskeyword" equivalent can be expanded. It may
be overboard to add an "iskeyword" option, as it applies to lots more
things than :abbr. Additionally, it's not clear why it's bad to call
keyword characters everything except whitespace and quotes.

TODO: Should abbreviations be triggered by any non-keyword character?

TODO: Should abbreviations be triggered by <CR>?

TODO: Should abbreviations be able to include <Left>, etc.?
This commit is contained in:
Ted Pavlic
2009-01-17 00:39:01 -05:00
parent ba948246cc
commit 21c4f0f89e
2 changed files with 63 additions and 4 deletions
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43
common/content/editor.js
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@@ -46,6 +46,45 @@ function Editor() //{{{
// XXX: this strikes me as a rather odd ds; everyone's a critic --djk
var abbreviations = {}; // abbreviations["lhr"][0]["{i,c,!}","rhs"]
// (summarized from Vim's ":help abbreviations")
//
// There are three types of abbreviations:
//
// full-id: Consists entirely of keyword characters.
// ("foo", "g3", "-1")
//
// end-id: Ends in a keyword character, but all other
// are not keyword characters.
// ("#i", "..f", "$/7")
//
// non-id: Ends in a non-keyword character, but the
// others can be of any type other than space
// and tab.
// ("def#", "4/7$")
//
// Example strings that cannot be abbreviations:
// "a.b", "#def", "a b", "_$r"
//
// For now, a keyword character is anything except for \s, ", or '
// (i.e., whitespace and quotes). In Vim, a keyword character is
// specified by the 'iskeyword' setting and is a much less inclusive
// list.
//
// TODO: Make keyword definition closer to Vim's default keyword
// definition (which differs across platforms).
//
let nonkw = "\\s\"'";
let keyword = "[^" + nonkw + "]";
let nonkeyword = "[" + nonkw + "]";
let full_id = keyword + "+";
let end_id = nonkeyword + "+" + keyword;
let non_id = "\\S*" + nonkeyword;
// Used in addAbbrevation and expandAbbreviation
var abbrevmatch = full_id + "|" + end_id + "|" + non_id;
function getEditor()
{
return window.document.commandDispatcher.focusedElement;
@@ -164,7 +203,7 @@ function Editor() //{{{
"Abbreviate a key sequence" + modeDescription,
function (args)
{
let matches = args.string.match(/^\s*([^\s"']*)(?:\s*$|\s+(.*))/);
let matches = args.string.match(RegExp("^\\s*($|" + abbrevmatch + ")(?:\\s*$|\\s+(.*))"));
if (! matches)
{
liberator.echoerr("E474: Invalid argument");
@@ -1016,7 +1055,7 @@ function Editor() //{{{
let text = textbox.value;
let currStart = textbox.selectionStart;
let currEnd = textbox.selectionEnd;
let foundWord = text.substring(0, currStart).replace(/^(.|\n)*?([^\s"']+)$/m, "$2"); // get last word \b word boundary
let foundWord = text.substring(0, currStart).replace(RegExp("^(.|\\n)*?\\s*(" + abbrevmatch + ")$", "m"), "$2"); // get last word \b word boundary
if (!foundWord)
return true;