Update the description in the man page.

[email-validator.git] / doc / man1 / email-validator.1

diff --git a/doc/man1/email-validator.1 b/doc/man1/email-validator.1
index 5fd7d10c3a610f414ec0821dcc58458e24d4dac5..232a5f422da13539aa4e1521d73514624b156f85 100644 (file)
--- a/doc/man1/email-validator.1
+++ b/doc/man1/email-validator.1
@@ -5,7 +5,7 @@ email-validator \- Perform basic syntax and deliverability checks on email addre
 
 .SH SYNOPSIS
 
-\fBemail-validator\fR [\fB\-ha\fR] [\fB-i \fIFILE\fR] [\fB-o \fIFILE\fR] \fI<input>\fR
+\fBemail-validator\fR [\fB\-har\fR] [\fB-i \fIFILE\fR] [\fB-o \fIFILE\fR] \fI<input>\fR
 
 .SH INPUT
 
@@ -22,24 +22,33 @@ stdout), one per line.
 .SH DESCRIPTION
 
 .P
-We check the validity of an email address using three techniques:
+Validate an email address using three techniques:
 
 .IP \[bu] 2
-We ensure that the length of local and domain parts is within the
+Ensuring that the length of local and domain parts is within the
 RFC-specified limits.
 
 .IP \[bu]
-A regular expression is used to check for invalid characters and syntax.
+A syntax check using a regular expression, or the full RFC 5322
+grammar (see the \fB\-\-rfc5322\fR option).
 
 .IP \[bu]
-We confirm the existence of a MX record for the domain part of the
-address. This is not required; in fact many domains accept mail via
-an 'A' record for e.g. example.com which is used in lieu of an MX
-record. This behavior can be controlled via the \fR\-a\fR flag.
+Confirmation of the existence of an \fIMX\fR record for the domain
+part of the address. This is not required; in fact many domains accept
+mail via an \fIA\fR record for e.g. example.com which is used in lieu
+of an \fIMX\fR record. This behavior can be controlled via the
+\fR\-\-accept\-a\fR flag.
 
 .P
 These checks are performed in parallel using the number of available
-threads.
+threads. To increase the number of threads, you can pass the
+appropriate flag to the GHC runtime.
+
+.P
+This will set the number of threads to 25:
+
+.nf
+.B $ email-validator -i addresses.csv +RTS -N25
 
 .SH OPTIONS
 
@@ -55,6 +64,10 @@ than using stdin (the default).
 Specify the output file to which the good addresses will be written,
 rather than using stdout (the default).
 
+.IP \fB\-\-rfc5322\fR,\ \fB\-r\fR
+Verify addresses against RFC 5322 rather than a naive regular
+expression. This is much more lenient than the default.
+
 .SH BUGS
 
 .P