usage and man page updated

cawk

@@ -33,32 +33,36 @@ error[0]="Exiting..."
 error[1]="Invalid expression!"
 error[2]="Invalid argument!"
 
+bold=$'\e[1m'
+reset=$'\e[m'
+
 copy='Copyright (C) 2022 Blau Araujo <blau@debxp.org>.
 
-License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
+License: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.
 '
 
-help="cawk ($version) - REPL calculator in Bash and AWK
+help="${bold}cawk${reset} ($version) - REPL calculator in Bash and AWK
 
-USAGE
+${bold}USAGE${reset}
 
-  cawk [-f PRECISION]                 - Start in REPL mode.
-  cawk -e EXPRESSION [-f PRECISION]   - Eval EXPRESSION and quit.
-  COMMAND | cawk [-f PRECISION]       - Eval expressions from COMMAND output.
-  cawk [-f PRECISION] < FILE          - Eval expressions list in FILE
+  ${bold}cawk${reset} [-f PRECISION]
+  ${bold}cawk${reset} -e EXPRESSION [-f PRECISION]
+  COMMAND | ${bold}cawk${reset} [-f PRECISION]
+  ${bold}cawk${reset} [-f PRECISION] < FILE
 
-OPTIONS
+${bold}OPTIONS${reset}
 
-  -e EXPRESSION   Expression to evaluate.
-  -f PRECISION    Number of positions after decimal point.
+  ${bold}-e${reset} EXPRESSION   Expression to evaluate.
+  ${bold}-f${reset} PRECISION    Number of positions after decimal point.
+  ${bold}-h${reset} or ${bold}--help${reset}    This help.
 
-COMMANDS
+${bold}COMMANDS${reset}
 
-  f PRECISION   Redefine precision.
-  h or ?        Help.
-  q or quit     Quit.
+  ${bold}f${reset} PRECISION   Redefine precision.
+  ${bold}h${reset} or ${bold}?${reset}        Help.
+  ${bold}q${reset} or ${bold}quit${reset}     Quit.
 "
 
 # functions -------------------------------------------------------------------
@@ -87,7 +91,7 @@ repl() {
         case "${REPLY,,}" in
             f*( )+([0-9])) PRECISION=${REPLY:1}
                            ;;
-                    h|'?') echo "$help"
+               help|h|'?') echo "$help"
                            ;;
                    q|quit) die 0
                            ;;

cawk.1

@@ -2,7 +2,7 @@
 .\" Text automatically generated by txt2man
 .RS
 .SH NAME
-\fBcawk \fP- REPL calculator in Bash and GNU awk.
+\fBcawk\fP - REPL calculator in Bash and GNU awk.
 .SH SYNOPSIS
 .nf
 .fam C
@@ -15,31 +15,35 @@
 .fam T
 .fi
 .SH DESCRIPTION
-When executed whith no arguments, or just with the optional \fB-f\fP PRECISION, \fBcawk\fP enter in REPL mode (\fBR\fPead \fBE\fPval \fBP\fPrint \fBL\fPoop). With \fB-e\fP option, EXPRESSION is evaluated and \fBcawk\fP exits. Expressions lists can also be passed by pipe, here strings, or files (via shell redirection for reading).
+When executed whith no arguments, or just with the optional \fB-f\fP PRECISION,
+\fBcawk\fP enter in REPL mode (\fBR\fPead \fBE\fPval \fBP\fPrint \fBL\fPoop).
+With \fB-e\fP option, EXPRESSION is evaluated and \fBcawk\fP exits. Expressions
+lists can also be passed by pipe, here strings, or files (via shell redirection
+for reading).
 .SH OPTIONS
-.TP
-\fB-e EXPRESSION\fP
-
+.TP 18
+\fB-e\fP EXPRESSION
 Expression to evaluate.
 .TP
-\fB-f PRECISION\fP
-
+\fB-f\fP PRECISION
 Number of positions after decimal point.
-.SH COMMANDS (REPL mode)
 .TP
-\fBf NUMBER\fP
-
+\fB-h\fP or \fB--help\fP
+This help.
+.SH COMMANDS
+.TP 18
+\fBf\fP PRECISION
 Redefine precision.
 .TP
-\fBh\fP or \fB?\fP
-
+\fBhelp\fP, \fBh\fP or \fB?\fP
 Help.
 .TP
 \fBq\fP or \fBquit\fP
-
 Exit.
+.SH SEE ALSO
+<https://git.blauaraujo.com/blau_araujo/cawk>
 .SH REPORTING BUGS
-https://git.blauaraujo.com/blau_araujo/cawk/issues
+<https://git.blauaraujo.com/blau_araujo/cawk/issues>
 .SH AUTHORS
 Written by Blau Araujo <blau@debxp.org>
 .SH COPYRIGHT
@@ -47,5 +51,5 @@ Copyright©2022, Blau Araujo.
 .PP
 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
 .PP
-This is free software: you are free to change and redistribute it. There is NO
-WARRANTY, to the extent permitted by law.
+This is free software: you are free to change and redistribute it. There is NO WARRANTY,
+to the extent permitted by law.