宏后逗号前避免 space

Avoid space before comma after macro

我正在尝试使用 Groff 的 man 宏包编写联机帮助页。具体来说，我想写一些像下面这样的文字：

The daemon can be configured by means of a configuration file. The default location of such file is /etc/trolls.conf, and this is quite nice.

所需的文本属性：

/etc/trolls.conf 呈现为斜体
后面跟一个逗号不是斜体,
/etc/trols.conf和逗号之间没有space。

能得到符合这种礼仪的文字真是太难了！例如，以下将导致斜体逗号：

.SH DESCRIPTION
The daemon can be configured by means of a configuration file. The default
location of such file is
.I /etc/trolls.conf,
and this is quite nice.

另一方面，第二次尝试将在 /etc/trolls.conf 和罗马逗号之间放置一个 space：

.SH DESCRIPTION
The daemon can be configured by means of a configuration file. The default
location of such file is
.I /etc/trolls.conf
, and this is quite nice.

有什么方法可以让它工作吗？

这种排版语言非常难（好吧，它也非常古老），最终我通过查看现有的联机帮助页解决了这个问题！

解决方法如下：

.SH DESCRIPTION
The daemon can be configured by means of a configuration file. The default
location of such file is
.IR /etc/trolls.conf ,
and this is quite nice.

.IR 宏实际上会在斜体 (I) 和罗马 (R) 之间交替，从而产生正确的渲染效果：

宏后逗号前避免 space

Avoid space before comma after macro

manpage

groff