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Correct handling of unbraced kerns followed by spaces. (#751)

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Did not realize that `Parser.nextToken.text` can contain spaces
(it can). Handle that.
This commit is contained in:
Eddie Kohler
2017-06-30 13:40:41 -04:00
committed by Kevin Barabash
parent aa1722c8b6
commit 87b9123200
2 changed files with 39 additions and 1 deletions
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2
src/Parser.js
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@@ -789,7 +789,7 @@ Parser.prototype.parseSizeGroup = function(optional) {
let res;
if (!optional && this.nextToken.text !== "{") {
res = this.parseRegexGroup(
/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2}$/, "size");
/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2} *$/, "size");
} else {
res = this.parseStringGroup("size", optional);
}

38
test/katex-spec.js
View File

@@ -1004,6 +1004,7 @@ describe("A kern parser", function() {
const emKern = "\\kern{1em}";
const exKern = "\\kern{1ex}";
const muKern = "\\kern{1mu}";
const abKern = "a\\kern{1em}b";
const badUnitRule = "\\kern{1px}";
const noNumberRule = "\\kern{em}";
@@ -1011,10 +1012,12 @@ describe("A kern parser", function() {
const emParse = getParsed(emKern)[0];
const exParse = getParsed(exKern)[0];
const muParse = getParsed(muKern)[0];
const abParse = getParsed(abKern)[1];
expect(emParse.value.dimension.unit).toEqual("em");
expect(exParse.value.dimension.unit).toEqual("ex");
expect(muParse.value.dimension.unit).toEqual("mu");
expect(abParse.value.dimension.unit).toEqual("em");
});
it("should not parse invalid units", function() {
@@ -1037,6 +1040,9 @@ describe("A non-braced kern parser", function() {
const emKern = "\\kern1em";
const exKern = "\\kern 1 ex";
const muKern = "\\kern 1mu";
const abKern1 = "a\\mkern1mub";
const abKern2 = "a\\kern-1mub";
const abKern3 = "a\\kern-1mu b";
const badUnitRule = "\\kern1px";
const noNumberRule = "\\kern em";
@@ -1044,10 +1050,32 @@ describe("A non-braced kern parser", function() {
const emParse = getParsed(emKern)[0];
const exParse = getParsed(exKern)[0];
const muParse = getParsed(muKern)[0];
const abParse1 = getParsed(abKern1)[1];
const abParse2 = getParsed(abKern2)[1];
const abParse3 = getParsed(abKern3)[1];
expect(emParse.value.dimension.unit).toEqual("em");
expect(exParse.value.dimension.unit).toEqual("ex");
expect(muParse.value.dimension.unit).toEqual("mu");
expect(abParse1.value.dimension.unit).toEqual("mu");
expect(abParse2.value.dimension.unit).toEqual("mu");
expect(abParse3.value.dimension.unit).toEqual("mu");
});
it("should parse elements on either side of a kern", function() {
const abParse1 = getParsed(abKern1);
const abParse2 = getParsed(abKern2);
const abParse3 = getParsed(abKern3);
expect(abParse1.length).toEqual(3);
expect(abParse1[0].value).toEqual("a");
expect(abParse1[2].value).toEqual("b");
expect(abParse2.length).toEqual(3);
expect(abParse2[0].value).toEqual("a");
expect(abParse2[2].value).toEqual("b");
expect(abParse3.length).toEqual(3);
expect(abParse3[0].value).toEqual("a");
expect(abParse3[2].value).toEqual("b");
});
it("should not parse invalid units", function() {
@@ -1064,6 +1092,16 @@ describe("A non-braced kern parser", function() {
const parse = getParsed("\\kern+1em")[0];
expect(parse.value.dimension.number).toBeCloseTo(1);
});
it("should handle whitespace", function() {
const abKern = "a\\kern\t-\r1 \n mu\nb";
const abParse = getParsed(abKern);
expect(abParse.length).toEqual(3);
expect(abParse[0].value).toEqual("a");
expect(abParse[1].value.dimension.unit).toEqual("mu");
expect(abParse[2].value).toEqual("b");
});
});
describe("A left/right parser", function() {