Unescaped | in fuzzy comments crashes gettext parser in nodejs

[lkocman]

Describe the issue

Hello Weblate team.

We're using weblate for translation of our new github.com/openSUSE/quiz application
https://l10n.opensuse.org/projects/quiz/quiz/

Comment '#~| msgid "lang_name_en"' from weblate crashes our nodejs gettext parser as it seems that unescaped pipe is not allowed.(https://github.com/openSUSE/quiz/blob/3126eb29c5cc624d7daf5cb3470e596e6a89e0be/po/de.po#L1424)

1422 
1423 #, fuzzy
1424 #~| msgid "lang_name_en"
1425 #~ msgid "lang_name_he"
1426 #~ msgstr "Englisch"
1427 

📦[lkocman@quiz quiz]$ npm start

[email protected] start
nodemon src/server.js

[nodemon] 3.1.10
[nodemon] to restart at any time, enter rs
[nodemon] watching path(s): .
[nodemon] watching extensions: js,mjs,cjs,json
[nodemon] starting node src/server.js
✅ Quiz app running at http://localhost:4000
file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:217
const err = new SyntaxError(Error parsing PO data: Invalid key name "${this._node.value}" at line ${this._lineNumber}. This can be caused by an unescaped quote character in a msgid or msgstr value.);
^

SyntaxError: Error parsing PO data: Invalid key name "|" at line 1424. This can be caused by an unescaped quote character in a msgid or msgstr value.
at Parser._lexer (file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:217:25)
at Parser.parse (file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:63:8)
at Object.parse (file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:16:17)
at loadTranslations (/home/lkocman/Workspace/opensuse/quiz/src/app.js:82:29)
at async /home/lkocman/Workspace/opensuse/quiz/src/route.js:27:5 {
lineNumber: 1424
}

As 

### I already tried

- [x] I've read and searched [the documentation](https://docs.weblate.org/).
- [x] I've searched for similar filed issues in this repository.

### Steps to reproduce the behavior

1. git clone [email protected]:openSUSE/quiz.git
2. git reset --hard 98351bc
3. cd quiz
4. npm run build:css
5. npm install
6. npm start
7. go to localhost:4000 and choose German language in our lang box

### Expected behavior

Translated strings, no traceback

### Screenshots

_No response_

### Exception traceback

```pytb
file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:217
            const err = new SyntaxError(`Error parsing PO data: Invalid key name "${this._node.value}" at line ${this._lineNumber}. This can be caused by an unescaped quote character in a msgid or msgstr value.`);
                        ^

SyntaxError: Error parsing PO data: Invalid key name "|" at line 1424. This can be caused by an unescaped quote character in a msgid or msgstr value.
    at Parser._lexer (file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:217:25)
    at Parser.parse (file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:63:8)
    at Object.parse (file:///home/lkocman/Workspace/opensuse/quiz/node_modules/gettext-parser/lib/poparser.js:16:17)
    at loadTranslations (/home/lkocman/Workspace/opensuse/quiz/src/app.js:82:29)
    at async /home/lkocman/Workspace/opensuse/quiz/src/route.js:27:5 {
  lineNumber: 1424

How do you run Weblate?

No response

Weblate versions

No response

Weblate deploy checks

Additional context

No response

[lkocman]

I suppose this is a known issue then

Going for advice to disable obsolete fuzzy msgids:
Advanced settings or Component Configuration: Disable “keep obsolete or fuzzy msgid references”.

[nijel]

This can indeed serve as a workaround for the issue.

[nijel]

This is a bug in nodejs gettext parser that it doesn't handle all GNU gettext syntax. This is created by msgmerge:

$ cat 1.po
#, fuzzy
#| msgid "lang_name_en"
msgid "lang_name_he"
msgstr "Englisch"
$ cat 1.pot 
msgid "other"
msgstr "Other"

$ msgmerge 1.po 1.pot -o 2.po
.. dokončeno.
$ cat 2.po 
msgid "other"
msgstr "Other"

#, fuzzy
#~| msgid "lang_name_en"
#~ msgid "lang_name_he"
#~ msgstr "Englisch"