From caca5c3044541acfc9fe4a7f32167bb1179b6253 Mon Sep 17 00:00:00 2001
From: David Worms <david@adaltas.com>
Date: Fri, 25 Aug 2023 13:04:40 +0200
Subject: [PATCH] feat(csv-parse): new comment_no_infix option (fix #325)

---
 packages/csv-parse/dist/cjs/index.cjs         | 14 ++++++-
 packages/csv-parse/dist/cjs/index.d.cts       |  6 +++
 packages/csv-parse/dist/cjs/sync.cjs          | 14 ++++++-
 packages/csv-parse/dist/esm/index.d.ts        |  6 +++
 packages/csv-parse/dist/esm/index.js          | 14 ++++++-
 packages/csv-parse/dist/esm/sync.js           | 14 ++++++-
 packages/csv-parse/dist/iife/index.js         | 14 ++++++-
 packages/csv-parse/dist/iife/sync.js          | 14 ++++++-
 packages/csv-parse/dist/umd/index.js          | 14 ++++++-
 packages/csv-parse/dist/umd/sync.js           | 14 ++++++-
 packages/csv-parse/lib/api/index.js           |  4 +-
 .../csv-parse/lib/api/normalize_options.js    | 10 +++++
 packages/csv-parse/lib/index.d.ts             |  6 +++
 packages/csv-parse/test/api.types.ts          |  3 +-
 .../test/option.comment_no_infix.coffee       | 38 +++++++++++++++++++
 15 files changed, 166 insertions(+), 19 deletions(-)
 create mode 100644 packages/csv-parse/test/option.comment_no_infix.coffee

diff --git a/packages/csv-parse/dist/cjs/index.cjs b/packages/csv-parse/dist/cjs/index.cjs
index 4336b2744..3fffa1444 100644
--- a/packages/csv-parse/dist/cjs/index.cjs
+++ b/packages/csv-parse/dist/cjs/index.cjs
@@ -278,6 +278,16 @@ const normalize_options = function(opts){
       ], options);
     }
   }
+  // Normalize option `comment_no_infix`
+  if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+    options.comment_no_infix = false;
+  }else if(options.comment_no_infix !== true){
+    throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+      'Invalid option comment_no_infix:',
+      'value must be a boolean,',
+      `got ${JSON.stringify(options.comment_no_infix)}`
+    ], options);
+  }
   // Normalize option `delimiter`
   const delimiter_json = JSON.stringify(options.delimiter);
   if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -639,7 +649,7 @@ const transform = function(original_options = {}) {
     },
     // Central parser implementation
     parse: function(nextBuf, end, push, close){
-      const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+      const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
       let {comment, escape, quote, record_delimiter} = this.options;
       const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
       let buf;
@@ -838,7 +848,7 @@ const transform = function(original_options = {}) {
               continue;
             }
             const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-            if(commentCount !== 0){
+            if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
               this.state.commenting = true;
               continue;
             }
diff --git a/packages/csv-parse/dist/cjs/index.d.cts b/packages/csv-parse/dist/cjs/index.d.cts
index d082c7133..ec8aa027e 100644
--- a/packages/csv-parse/dist/cjs/index.d.cts
+++ b/packages/csv-parse/dist/cjs/index.d.cts
@@ -88,6 +88,12 @@ export interface Options {
      * Treat all the characters after this one as a comment, default to '' (disabled).
      */
     comment?: string;
+    /**
+     * Restrict the definition of comments to a full line. Comment characters
+     * defined in the middle of the line are not interpreted as such. The
+     * option require the activation of comments.
+     */
+    comment_no_infix?: boolean;
     /**
      * Set the field delimiter. One character only, defaults to comma.
      */
diff --git a/packages/csv-parse/dist/cjs/sync.cjs b/packages/csv-parse/dist/cjs/sync.cjs
index bb5ee4dfb..4d0058d38 100644
--- a/packages/csv-parse/dist/cjs/sync.cjs
+++ b/packages/csv-parse/dist/cjs/sync.cjs
@@ -276,6 +276,16 @@ const normalize_options = function(opts){
       ], options);
     }
   }
+  // Normalize option `comment_no_infix`
+  if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+    options.comment_no_infix = false;
+  }else if(options.comment_no_infix !== true){
+    throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+      'Invalid option comment_no_infix:',
+      'value must be a boolean,',
+      `got ${JSON.stringify(options.comment_no_infix)}`
+    ], options);
+  }
   // Normalize option `delimiter`
   const delimiter_json = JSON.stringify(options.delimiter);
   if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -637,7 +647,7 @@ const transform = function(original_options = {}) {
     },
     // Central parser implementation
     parse: function(nextBuf, end, push, close){
-      const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+      const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
       let {comment, escape, quote, record_delimiter} = this.options;
       const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
       let buf;
@@ -836,7 +846,7 @@ const transform = function(original_options = {}) {
               continue;
             }
             const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-            if(commentCount !== 0){
+            if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
               this.state.commenting = true;
               continue;
             }
diff --git a/packages/csv-parse/dist/esm/index.d.ts b/packages/csv-parse/dist/esm/index.d.ts
index d082c7133..ec8aa027e 100644
--- a/packages/csv-parse/dist/esm/index.d.ts
+++ b/packages/csv-parse/dist/esm/index.d.ts
@@ -88,6 +88,12 @@ export interface Options {
      * Treat all the characters after this one as a comment, default to '' (disabled).
      */
     comment?: string;
+    /**
+     * Restrict the definition of comments to a full line. Comment characters
+     * defined in the middle of the line are not interpreted as such. The
+     * option require the activation of comments.
+     */
+    comment_no_infix?: boolean;
     /**
      * Set the field delimiter. One character only, defaults to comma.
      */
diff --git a/packages/csv-parse/dist/esm/index.js b/packages/csv-parse/dist/esm/index.js
index 732835411..1371e2d39 100644
--- a/packages/csv-parse/dist/esm/index.js
+++ b/packages/csv-parse/dist/esm/index.js
@@ -5400,6 +5400,16 @@ const normalize_options = function(opts){
       ], options);
     }
   }
+  // Normalize option `comment_no_infix`
+  if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+    options.comment_no_infix = false;
+  }else if(options.comment_no_infix !== true){
+    throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+      'Invalid option comment_no_infix:',
+      'value must be a boolean,',
+      `got ${JSON.stringify(options.comment_no_infix)}`
+    ], options);
+  }
   // Normalize option `delimiter`
   const delimiter_json = JSON.stringify(options.delimiter);
   if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -5761,7 +5771,7 @@ const transform = function(original_options = {}) {
     },
     // Central parser implementation
     parse: function(nextBuf, end, push, close){
-      const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+      const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
       let {comment, escape, quote, record_delimiter} = this.options;
       const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
       let buf;
@@ -5960,7 +5970,7 @@ const transform = function(original_options = {}) {
               continue;
             }
             const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-            if(commentCount !== 0){
+            if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
               this.state.commenting = true;
               continue;
             }
diff --git a/packages/csv-parse/dist/esm/sync.js b/packages/csv-parse/dist/esm/sync.js
index 09cf2f247..405662846 100644
--- a/packages/csv-parse/dist/esm/sync.js
+++ b/packages/csv-parse/dist/esm/sync.js
@@ -2246,6 +2246,16 @@ const normalize_options = function(opts){
       ], options);
     }
   }
+  // Normalize option `comment_no_infix`
+  if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+    options.comment_no_infix = false;
+  }else if(options.comment_no_infix !== true){
+    throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+      'Invalid option comment_no_infix:',
+      'value must be a boolean,',
+      `got ${JSON.stringify(options.comment_no_infix)}`
+    ], options);
+  }
   // Normalize option `delimiter`
   const delimiter_json = JSON.stringify(options.delimiter);
   if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -2607,7 +2617,7 @@ const transform = function(original_options = {}) {
     },
     // Central parser implementation
     parse: function(nextBuf, end, push, close){
-      const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+      const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
       let {comment, escape, quote, record_delimiter} = this.options;
       const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
       let buf;
@@ -2806,7 +2816,7 @@ const transform = function(original_options = {}) {
               continue;
             }
             const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-            if(commentCount !== 0){
+            if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
               this.state.commenting = true;
               continue;
             }
diff --git a/packages/csv-parse/dist/iife/index.js b/packages/csv-parse/dist/iife/index.js
index 1638bc9fe..ea6b9afb1 100644
--- a/packages/csv-parse/dist/iife/index.js
+++ b/packages/csv-parse/dist/iife/index.js
@@ -5403,6 +5403,16 @@ var csv_parse = (function (exports) {
                   ], options);
                 }
               }
+              // Normalize option `comment_no_infix`
+              if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+                options.comment_no_infix = false;
+              }else if(options.comment_no_infix !== true){
+                throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+                  'Invalid option comment_no_infix:',
+                  'value must be a boolean,',
+                  `got ${JSON.stringify(options.comment_no_infix)}`
+                ], options);
+              }
               // Normalize option `delimiter`
               const delimiter_json = JSON.stringify(options.delimiter);
               if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -5764,7 +5774,7 @@ var csv_parse = (function (exports) {
                 },
                 // Central parser implementation
                 parse: function(nextBuf, end, push, close){
-                  const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+                  const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
                   let {comment, escape, quote, record_delimiter} = this.options;
                   const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
                   let buf;
@@ -5963,7 +5973,7 @@ var csv_parse = (function (exports) {
                           continue;
                         }
                         const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-                        if(commentCount !== 0){
+                        if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
                           this.state.commenting = true;
                           continue;
                         }
diff --git a/packages/csv-parse/dist/iife/sync.js b/packages/csv-parse/dist/iife/sync.js
index bbd9a751a..b4e3de6cc 100644
--- a/packages/csv-parse/dist/iife/sync.js
+++ b/packages/csv-parse/dist/iife/sync.js
@@ -2249,6 +2249,16 @@ var csv_parse_sync = (function (exports) {
                   ], options);
                 }
               }
+              // Normalize option `comment_no_infix`
+              if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+                options.comment_no_infix = false;
+              }else if(options.comment_no_infix !== true){
+                throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+                  'Invalid option comment_no_infix:',
+                  'value must be a boolean,',
+                  `got ${JSON.stringify(options.comment_no_infix)}`
+                ], options);
+              }
               // Normalize option `delimiter`
               const delimiter_json = JSON.stringify(options.delimiter);
               if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -2610,7 +2620,7 @@ var csv_parse_sync = (function (exports) {
                 },
                 // Central parser implementation
                 parse: function(nextBuf, end, push, close){
-                  const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+                  const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
                   let {comment, escape, quote, record_delimiter} = this.options;
                   const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
                   let buf;
@@ -2809,7 +2819,7 @@ var csv_parse_sync = (function (exports) {
                           continue;
                         }
                         const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-                        if(commentCount !== 0){
+                        if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
                           this.state.commenting = true;
                           continue;
                         }
diff --git a/packages/csv-parse/dist/umd/index.js b/packages/csv-parse/dist/umd/index.js
index d691d0fe1..36b36060a 100644
--- a/packages/csv-parse/dist/umd/index.js
+++ b/packages/csv-parse/dist/umd/index.js
@@ -5406,6 +5406,16 @@
                   ], options);
                 }
               }
+              // Normalize option `comment_no_infix`
+              if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+                options.comment_no_infix = false;
+              }else if(options.comment_no_infix !== true){
+                throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+                  'Invalid option comment_no_infix:',
+                  'value must be a boolean,',
+                  `got ${JSON.stringify(options.comment_no_infix)}`
+                ], options);
+              }
               // Normalize option `delimiter`
               const delimiter_json = JSON.stringify(options.delimiter);
               if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -5767,7 +5777,7 @@
                 },
                 // Central parser implementation
                 parse: function(nextBuf, end, push, close){
-                  const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+                  const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
                   let {comment, escape, quote, record_delimiter} = this.options;
                   const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
                   let buf;
@@ -5966,7 +5976,7 @@
                           continue;
                         }
                         const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-                        if(commentCount !== 0){
+                        if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
                           this.state.commenting = true;
                           continue;
                         }
diff --git a/packages/csv-parse/dist/umd/sync.js b/packages/csv-parse/dist/umd/sync.js
index 1c4fe5822..4b3c2b72d 100644
--- a/packages/csv-parse/dist/umd/sync.js
+++ b/packages/csv-parse/dist/umd/sync.js
@@ -2252,6 +2252,16 @@
                   ], options);
                 }
               }
+              // Normalize option `comment_no_infix`
+              if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+                options.comment_no_infix = false;
+              }else if(options.comment_no_infix !== true){
+                throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+                  'Invalid option comment_no_infix:',
+                  'value must be a boolean,',
+                  `got ${JSON.stringify(options.comment_no_infix)}`
+                ], options);
+              }
               // Normalize option `delimiter`
               const delimiter_json = JSON.stringify(options.delimiter);
               if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
@@ -2613,7 +2623,7 @@
                 },
                 // Central parser implementation
                 parse: function(nextBuf, end, push, close){
-                  const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+                  const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
                   let {comment, escape, quote, record_delimiter} = this.options;
                   const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
                   let buf;
@@ -2812,7 +2822,7 @@
                           continue;
                         }
                         const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-                        if(commentCount !== 0){
+                        if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
                           this.state.commenting = true;
                           continue;
                         }
diff --git a/packages/csv-parse/lib/api/index.js b/packages/csv-parse/lib/api/index.js
index b71843ba9..9833a68fc 100644
--- a/packages/csv-parse/lib/api/index.js
+++ b/packages/csv-parse/lib/api/index.js
@@ -61,7 +61,7 @@ const transform = function(original_options = {}) {
     },
     // Central parser implementation
     parse: function(nextBuf, end, push, close){
-      const {bom, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
+      const {bom, comment_no_infix, encoding, from_line, ltrim, max_record_size,raw, relax_quotes, rtrim, skip_empty_lines, to, to_line} = this.options;
       let {comment, escape, quote, record_delimiter} = this.options;
       const {bomSkipped, previousBuf, rawBuffer, escapeIsQuote} = this.state;
       let buf;
@@ -260,7 +260,7 @@ const transform = function(original_options = {}) {
               continue;
             }
             const commentCount = comment === null ? 0 : this.__compareBytes(comment, buf, pos, chr);
-            if(commentCount !== 0){
+            if(commentCount !== 0 && (comment_no_infix === false || this.state.field.length === 0)){
               this.state.commenting = true;
               continue;
             }
diff --git a/packages/csv-parse/lib/api/normalize_options.js b/packages/csv-parse/lib/api/normalize_options.js
index 98925943e..fa5838804 100644
--- a/packages/csv-parse/lib/api/normalize_options.js
+++ b/packages/csv-parse/lib/api/normalize_options.js
@@ -108,6 +108,16 @@ const normalize_options = function(opts){
       ], options);
     }
   }
+  // Normalize option `comment_no_infix`
+  if(options.comment_no_infix === undefined || options.comment_no_infix === null || options.comment_no_infix === false){
+    options.comment_no_infix = false;
+  }else if(options.comment_no_infix !== true){
+    throw new CsvError('CSV_INVALID_OPTION_COMMENT', [
+      'Invalid option comment_no_infix:',
+      'value must be a boolean,',
+      `got ${JSON.stringify(options.comment_no_infix)}`
+    ], options);
+  }
   // Normalize option `delimiter`
   const delimiter_json = JSON.stringify(options.delimiter);
   if(!Array.isArray(options.delimiter)) options.delimiter = [options.delimiter];
diff --git a/packages/csv-parse/lib/index.d.ts b/packages/csv-parse/lib/index.d.ts
index d082c7133..ec8aa027e 100644
--- a/packages/csv-parse/lib/index.d.ts
+++ b/packages/csv-parse/lib/index.d.ts
@@ -88,6 +88,12 @@ export interface Options {
      * Treat all the characters after this one as a comment, default to '' (disabled).
      */
     comment?: string;
+    /**
+     * Restrict the definition of comments to a full line. Comment characters
+     * defined in the middle of the line are not interpreted as such. The
+     * option require the activation of comments.
+     */
+    comment_no_infix?: boolean;
     /**
      * Set the field delimiter. One character only, defaults to comma.
      */
diff --git a/packages/csv-parse/test/api.types.ts b/packages/csv-parse/test/api.types.ts
index 82fbeb7a5..c57c34f27 100644
--- a/packages/csv-parse/test/api.types.ts
+++ b/packages/csv-parse/test/api.types.ts
@@ -28,7 +28,8 @@ describe('API Types', () => {
       const options: Options = parser.options
       const keys: string[] = Object.keys(options)
       keys.sort().should.eql([
-        'bom', 'cast', 'cast_date', 'cast_first_line_to_header', 'cast_function', 'columns', 'comment', 'delimiter',
+        'bom', 'cast', 'cast_date', 'cast_first_line_to_header',
+        'cast_function', 'columns', 'comment', 'comment_no_infix', 'delimiter',
         'encoding', 'escape', 'from', 'from_line', 'group_columns_by_name',
         'ignore_last_delimiters', 'info', 'ltrim', 'max_record_size', 'objname',
         'on_record', 'on_skip', 'quote', 'raw', 'record_delimiter',
diff --git a/packages/csv-parse/test/option.comment_no_infix.coffee b/packages/csv-parse/test/option.comment_no_infix.coffee
new file mode 100644
index 000000000..e3ccf76dc
--- /dev/null
+++ b/packages/csv-parse/test/option.comment_no_infix.coffee
@@ -0,0 +1,38 @@
+
+import { parse } from '../lib/index.js'
+
+describe 'Option `comment_no_infix`', ->
+  
+  it 'validation', ->
+    parse '', comment_no_infix: undefined, (->)
+    parse '', comment_no_infix: null, (->)
+    parse '', comment_no_infix: false, (->)
+    parse '', comment_no_infix: true, (->)
+    (->
+      parse '', comment_no_infix: '', (->)
+    ).should.throw
+      message: 'Invalid option comment_no_infix: value must be a boolean, got ""'
+      code: 'CSV_INVALID_OPTION_COMMENT'
+    (->
+      parse '', comment_no_infix: 2, (->)
+    ).should.throw
+      message: 'Invalid option comment_no_infix: value must be a boolean, got 2'
+      code: 'CSV_INVALID_OPTION_COMMENT'
+      
+  it 'with `true`', (next) ->
+    parse '''
+    a,b#,c
+    ''', comment: '#', comment_no_infix: true, (err, records) ->
+      records.should.eql [
+        ['a', 'b#', 'c']
+      ] unless err
+      next err
+      
+  it 'with `false`', (next) ->
+    parse '''
+    a,b#,c
+    ''', comment: '#', comment_no_infix: false, (err, records) ->
+      records.should.eql [
+        ['a', 'b']
+      ] unless err
+      next err