Ticket #240 (new defect)

Opened 2 years ago

Last modified 3 months ago

Block and / or folded literal dumps fail on trailing space

Reported by: yarkot1@… Owned by: xi
Priority: normal Component: pyyaml
Severity: normal Keywords:
Cc:

Description

Goal: Yaml output of both block and folded styles, such as: folded_example: >

I have some text here and then some more here.

literal_style: |

I have some text here and some more here.

Approach: Searching, I found this  http://stackoverflow.com/questions/6432605 approach, which seems to work reasonably well _except_ for a peculiar data situation ("the BUG").

PROBLEM: If the source python dict looks like this:

d = { 'x': literal_unicode('I have some text here\n and some more here.\n') } print(yaml.dump(d))

x: |

I have some text here

and some more here.

If the source has any trailing whitespace before the newlines (tab or spaces tested), then the output changes to this:

d = { 'x': literal_unicode('I have some text here\n and some more here.\t\n') } print(yaml.dump(d))

x: "I have some text here\n and some more here.\t\n"

Likewise for folded representation:

d = { 'x': folded_unicode('I have some text here\n and some more here.\t\n') } print(yaml.dump(d))

x: "I have some text here\n and some more here.\t\n"

d = { 'x': folded_unicode('I have some text here\n and some more here.\n') } print(yaml.dump(d))

x: >

I have some text here

and some more here.


OS/X Snow Leopard; Python Version 2.7.3 pyYaml '3.10'

Change History

comment:1 Changed 2 years ago by anonymous

Also, if the block has a '\t', the same thing happens.

Yarko

comment:2 Changed 2 years ago by anonymous

That is: if there is a '\t' character anywhere in the value (regardless of position) the same thing happens.

comment:3 Changed 2 years ago by jcollado

In addition to what has been already said, I've seen that it's possible to load a yaml stream that contains that kind of whitespace successfully:

yaml.load('- string\n- |\n literal string \n- other string')

['string', 'literal string \n', 'other string']

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