Specifying the direction of quotation marks
You can specify the direction of the quotation marks with -ah-quotetype. Available values are ‘QU’, ‘OP’ and ‘CL’. Consider ‘QU’ to be non-directional quotation marks, ‘OP’ to be open quotation marks, and ‘CL’ to be close quotation marks. You can use this extension to explicitly specify the direction for non-directional quotation marks such as U+0022, or explicitly change the direction of quotation marks for a specific language. The setting of ‘axf:quotetype’ is invalid if it is specified for characters other than quotation marks. For details on how to handle quotation marks, see also the Quotation Mark in "Technical Notes" in the manual. This feature is available from AH Formatter V7.1.

Without the setting of -ah-quotetype

Quotation Mark (U+0022: ") is a non-directional quotation mark of QU class. The Unicode line break specification for the QU class prohibits line breaks before and after it. Therefore, in the case where U+0022 is arranged without spaces, the line breaks as follows:
Lorem ipsum dolor sit, consectetur adipiscing elit, a "123""123" do eiusmod tempor
むかしむかしあるところにおじいさんと"おばあさん"がおりました。

With the setting of -ah-quotetype: OP | CL

By specifying ‘OP’ and ‘CL’ in Quotation Mark (U+0022: "), line breaks are performed according to the respective directions.
Lorem ipsum dolor sit, consectetur adipiscing elit, a "123""123" do eiusmod tempor
むかしむかしあるところにおじいさんと"おばあさん"がおりました。