BUG: Line delimited json is breaks if string includes }

[joshowen]

In 0.19.0 exporting json with new lines breaks if a string contains a closing curly brace.

Example

import pandas as pd
pd.DataFrame([{'a': 'foo}', 'b': 'bar'}, {'a': 'foo2', 'b': 'bar2'}]).to_json(orient='records', lines=True)

'{"a":"foo}"\n"b":"bar"},{"a":"foo2"\n"b":"bar2"}'

Expected Output

'{"a":"foo}","b":"bar"}\n{"a":"foo2","b":"bar2"}'

Output of pd.show_versions()

## INSTALLED VERSIONS

commit: None
python: 2.7.12.final.0
python-bits: 64
OS: Darwin
OS-release: 16.0.0
machine: x86_64
processor: i386
byteorder: little
LC_ALL: None
LANG: en_US.UTF-8
LOCALE: en_US.UTF-8

pandas: 0.19.0
nose: None
pip: 8.1.2
setuptools: 27.2.0
Cython: 0.24.1
numpy: 1.11.2
scipy: 0.18.1
statsmodels: None
xarray: None
IPython: 5.1.0
sphinx: None
patsy: None
dateutil: 2.5.3
pytz: 2016.7
blosc: None
bottleneck: 1.1.0
tables: 3.2.3.1
numexpr: 2.6.1
matplotlib: 1.5.3
openpyxl: 2.4.0
xlrd: None
xlwt: None
xlsxwriter: None
lxml: 3.6.4
bs4: 4.5.1
html5lib: 0.999
httplib2: 0.9.2
apiclient: 1.5.3
sqlalchemy: None
pymysql: None
psycopg2: 2.6.2 (dt dec pq3 ext lo64)
jinja2: 2.8
boto: 2.42.0
pandas_datareader: 0.2.1

[jorisvandenbossche]

Note that this bug is inly present with lines=True (new feature in 0.19.0), with the default it works correctly:

In [50]: pd.DataFrame([{'a': 'foo}', 'b': 'bar'}, {'a': 'foo2', 'b': 'bar2'}]).to_json(orient='records')
Out[50]: '[{"a":"foo}","b":"bar"},{"a":"foo2","b":"bar2"}]'

@joshowen Thanks for the report!

cc @aterrel