Update MD014/commands-show-output to report each violation, include fix information (fixes #217).

lib/md014.js

@@ -2,27 +2,52 @@
 
 "use strict";
 
-const { addErrorContext, filterTokens, newLineRe, rangeFromRegExp } =
-  require("../helpers");
+const { addErrorContext, filterTokens } = require("../helpers");
 
-const dollarCommandRe = /^(\s*)(\$\s)/;
+const dollarCommandRe = /^(\s*)(\$\s+)/;
+
+function addErrorIfPreviousWasCommand(onError, previous) {
+  if (previous) {
+    const { lineNumber, lineTrim, column, length } = previous;
+    addErrorContext(
+      onError,
+      lineNumber,
+      lineTrim,
+      null,
+      null,
+      [ column, length ],
+      {
+        "editColumn": column,
+        "deleteCount": length
+      }
+    );
+  }
+}
 
 module.exports = {
   "names": [ "MD014", "commands-show-output" ],
   "description": "Dollar signs used before commands without showing output",
   "tags": [ "code" ],
   "function": function MD014(params, onError) {
-    [ "code_block", "fence" ].forEach(function forType(type) {
-      filterTokens(params, type, function forToken(token) {
-        let allBlank = true;
-        if (token.content && token.content.split(newLineRe)
-          .every(function forLine(line) {
-            return !line || (allBlank = false) || dollarCommandRe.test(line);
-          }) && !allBlank) {
-          addErrorContext(onError, token.lineNumber,
-            token.content.split(newLineRe)[0].trim(), null, null,
-            rangeFromRegExp(token.line, dollarCommandRe));
+    [ "code_block", "fence" ].forEach((type) => {
+      filterTokens(params, type, (token) => {
+        let previous = null;
+        const margin = (token.type === "fence") ? 1 : 0;
+        for (let i = token.map[0] + margin; i < token.map[1] - margin; i++) {
+          const line = params.lines[i];
+          const lineTrim = line.trim();
+          const match = dollarCommandRe.exec(line);
+          if (!lineTrim || match) {
+            addErrorIfPreviousWasCommand(onError, previous);
           }
+          previous = match ? {
+            "lineNumber": i + 1,
+            "lineTrim": lineTrim,
+            "column": match[1].length + 1,
+            "length": match[2].length
+          } : null;
+        }
+        addErrorIfPreviousWasCommand(onError, previous);
       });
     });
   }

test/code_block_dollar.md

@@ -1,9 +1,9 @@
 The following code block shouldn't have $ before the commands:
 
     $ ls {MD014}
-    $ less foo
+    $ less foo {MD014}
 
-    $ cat bar
+    $ cat bar {MD014}
 
 However the following code block shows output, and $ can be used to
 distinguish between command and output:
@@ -31,3 +31,19 @@ shouldn't fire: {MD046:32}
 
 ```bash
 ```
+
+Mixed content:
+
+    $ ls
+    file.md other.md
+    $ git branch {MD014}
+    $ cat stuff {MD014}
+
+    output
+    $ ls {MD014}
+    $ git branch {MD014}
+    $ cat stuff
+    stuff here
+    more stuff
+    $ tail cat
+    meow

test/code_block_dollar_fence.md

@@ -1,36 +1,43 @@
 # heading
 
 ```fence
-$ code
-```
-
-text
-
-```fence
-$ code
-```
-
-text
-
-```fence
-$ code
-$ code
+$ code {MD014}
+```
+
+text
+
+```fence
+$ code {MD014}
+```
+
+text
+
+```fence
+$ code {MD014}
+$ code {MD014}
+```
+
+text
+
+```fence
+$ code {MD014}
+$ code {MD014}
 ```
 
 text
 
 ```fence
 $ code
+code
 $ code
+code
 ```
 
 text
 
 ```sh
 
-$ npm install --save multimatch
+$ npm install --save multimatch {MD014}
 ```
 
 text
-
-{MD014:3} {MD014:9} {MD014:15} {MD014:22} {MD014:29}

test/detailed-results-MD011-MD021.md.fixed

@@ -8,7 +8,7 @@ A [reversed](link) example.
 
 ## 123456789 123456789 123456789 123456789 123456789 123456789
 
-    $ command with no output
+    command with no output
 
 ## No space A