Adjust the decimal units flag variable name from "si" to "decimal_units" so it does not overlap with other words like "size" and "signal"; add man page entry and adjust the "-L" man page entry; and allow this flag to also change how input prefixes are processed.

docs/NEWS.md

@@ -1,5 +1,6 @@
 ### NOT YET RELEASED
 
+ * feature: new "`--si`" option to display and interpret size suffixes in multiples of 1000 rather than 1024 (pull request [#85](https://codeberg.org/a-j-wood/pv/pulls/85)) supplied by [kevinruddy](https://codeberg.org/kevinruddy)
  * i18n: corrections and missing strings added to French translations (pull request [#83](https://codeberg.org/a-j-wood/pv/pulls/83)) supplied by [Thomas Bertels](https://codeberg.org/tbertels)
 
 ### 1.8.5 - 19 November 2023

docs/pv.1

@@ -1,4 +1,4 @@
-.TH PV 1 "November 2023" Linux "User Manuals"
+.TH PV 1 "March 2024" Linux "User Manuals"
 .SH NAME
 pv \- monitor the progress of data through a pipe
 .SH SYNOPSIS
@@ -154,6 +154,11 @@ data transferred so far.
 Display the total bits instead of the total bytes.  The output suffix will
 be "b" instead of "B".
 .TP
+.B \-k, \-\-si
+Display and interpret suffixes as multiples of 1000 rather than the default
+of 1024.  Note that this only takes effect on options after this one, so for
+consistency, specify this option first.
+.TP
 .B \-T, \-\-buffer\-percent
 Turn on the transfer buffer percentage display.  This will show the
 percentage of the transfer buffer in use - but see the caveat under
@@ -343,7 +348,11 @@ invocations in a single, long, pipeline.
 Limit the transfer to a maximum of
 .I RATE
 bytes per second.  A suffix of "K", "M", "G", or "T" can be added to denote
-kibibytes (*1024), mebibytes, and so on.
+kibibytes (*1024), mebibytes, and so on.  If
+.B \-\-si
+was also passed, suffixes will denote kilobytes (*1000), megabytes, etc. 
+Note the caveat about the positioning of
+.B \-\-si .
 .TP
 .BI \-B\  BYTES \fR,\ \fB\-\-buffer-size\  BYTES
 Use a transfer buffer size of
@@ -716,7 +725,7 @@ home page: <https://www.ivarch.com/programs/pv.shtml>
 .BR O_DIRECT )
 
 .SH COPYRIGHT
-Copyright \(co 2002-2008, 2010, 2012-2015, 2017, 2021, 2023 Andrew Wood.
+Copyright \(co 2002-2008, 2010, 2012-2015, 2017, 2021, 2023-2024 Andrew Wood.
 
 License GPLv3+: GNU GPL version 3 or later <https://www.gnu.org/licenses/gpl-3.0.html>.
 

docs/pv.1.md

@@ -121,6 +121,12 @@ that are explicitly switched on will be shown.
 :   Display the total bits instead of the total bytes. The output suffix
     will be \"b\" instead of \"B\".
 
+**-k, \--si**
+
+:   Display and interpret suffixes as multiples of 1000 rather than the
+    default of 1024. Note that this only takes effect on options after
+    this one, so for consistency, specify this option first.
+
 **-T, \--buffer-percent**
 
 :   Turn on the transfer buffer percentage display. This will show the
@@ -255,7 +261,9 @@ that are explicitly switched on will be shown.
 
 :   Limit the transfer to a maximum of *RATE* bytes per second. A suffix
     of \"K\", \"M\", \"G\", or \"T\" can be added to denote kibibytes
-    (\*1024), mebibytes, and so on.
+    (\*1024), mebibytes, and so on. If **\--si** was also passed,
+    suffixes will denote kilobytes (\*1000), megabytes, etc. Note the
+    caveat about the positioning of **\--si .**
 
 **-B BYTES, \--buffer-size BYTES**
 
@@ -535,7 +543,8 @@ Alternatively, use the issue tracker linked from the **pv** home page:
 
 # COPYRIGHT
 
-Copyright © 2002-2008, 2010, 2012-2015, 2017, 2021, 2023 Andrew Wood.
+Copyright © 2002-2008, 2010, 2012-2015, 2017, 2021, 2023-2024 Andrew
+Wood.
 
 License GPLv3+: GNU GPL version 3 or later
 \<https://www.gnu.org/licenses/gpl-3.0.html\>.