Rename the projectargot

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diff --git a/doc/grecs_error.3 b/doc/grecs_error.3
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--- a/doc/grecs_error.3
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-.\" This file is part of grecs -*- nroff -*-
-.\" Copyright (C) 2007-2016 Sergey Poznyakoff
-.\"
-.\" Grecs is free software; you can redistribute it and/or modify
-.\" it under the terms of the GNU General Public License as published by
-.\" the Free Software Foundation; either version 3, or (at your option)
-.\" any later version.
-.\"
-.\" Grecs is distributed in the hope that it will be useful,
-.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
-.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-.\" GNU General Public License for more details.
-.\"
-.\" You should have received a copy of the GNU General Public License
-.\" along with Grecs.  If not, see <http://www.gnu.org/licenses/>.
-.\"
-.TH GRECS_ERROR 3 "July 1, 2011" "GRECS" "Grecs User Reference"
-.SH NAME
-grecs_error, grecs_warning \- grecs error reporting functions
-.SH SYNOPSIS
-.nf
-.B #include <grecs.h>
-.sp
-.BI "void grecs_error(grecs_locus_t " "*locus" ", int " "errnum"  ", "
-.ti +17
-.BI       "const char " "*format" ", ...);"
-.br
-.BI "void grecs_warning(grecs_locus_t " "*locus" ", int " "errnum" ", "
-.ti +17
-.BI       "const char " "*format" ", ...);"
-.sp
-.BI "void (*grecs_print_diag_fun)(grecs_locus_t " "*locus" ", "
-.ti +17
-.BI       "int " "err" ", int " "errnum" ", const char " "*msg" );
-.sp
-.B extern int grecs_error_count;
-.SH DESCRIPTION
-.BI grecs_error ()
-is a error reporting function for \fBgrecs\fR library.  It flushes
-stdout, and outputs to stderr the file name and line number, as
-supplied by the 
-.BI locus
-argument, a colon and a space, the message specified by the
-.BR printf (3)-style
-format string \fIformat\fR, and, if \fIerrnum\fR is non-zero, a second
-colon and a space followed by the string given by
-.BI perror (errnum).
-Any arguments required for format should follow \fIformat\fR in the
-argument list. The output is terminated by a newline character.
-.PP
-If \fIlocus\fR is \fBNULL\fR, it is ignored and no file location is
-printed.
-.PP
-Each call to
-.BI grecs_error ()
-increments the value of the
-.BI grecs_error_count
-global variable.
-The
-.BI grecs_warning ()
-function works the same as
-.BI grecs_error (),
-except that it outputs, before the formatted message and after the
-file location, the word \fBwarning\fR, followed by a semicolon
-and a space character.  It does not modify the
-.BI grecs_error_count
-variable.
-.PP
-Calling program can modify the behavior of both functions by setting
-.BI grecs_print_diag_fun
-to the address of a custom error-reporting function. This function is
-called with the following arguments:
-.TP
-.I locus
-Location in the file where the error or warning condition is
-encountered.  Can be \fBNULL\fR if the condition occurred outside of
-input file context.
-.TP
-.I err
-This argument is \fB1\fR, if the function is called to report an error
-condition and \fB0\fR otherwise (i.e. a warning).
-.TP
-.I errnum
-System error code, or \fB0\fR, if no system error occurred.
-.TP
-.I msg
-Formatted message.
-.PP
-The \fBgrecs_locus_t\fR structure consists of two \fBpoints\fR, each
-point describing the beginning and the end of the input fragment in
-question:
-.sp
-.nf
-.in +5
-struct grecs_locus_point {
-     char *file;
-     unsigned line;
-     unsigned col;
-};
-typedef struct {
-     struct grecs_locus_point beg;
-     struct grecs_locus_point end;
-} grecs_locus_t;
-.in
-.fi
-.PP
-The \fBfile\fR member points to the file name, and the \fBline\fR
-member contains the input line number and the \fBcol\fR member
-contains the column number. Both lines and columns are numbered from
-1.
-.PP
-On output, the \fBgrecs_locus_t\fR structure is formatted as follows:
-.sp
-.nf
-.in +5
-\fBBEGFILE\fR:\fBBEGLINE\fR.\fBBEGCOL\fR\-\fBENDFILE\fR:\fBENDLINE\fR.\fBENDCOL\fR
-.in
-.fi
-.PP
-If \fBBEGFILE\fR equals \fBENDFILE\fR in the sense of
-.BR strcmp (3),
-then the output is contracted to:
-.sp
-.nf
-.in +5
-\fBFILE\fR:\fBBEGLINE\fR.\fBBEGCOL\fR\-\fBENDLINE\fR.\fBENDCOL\fR
-.in
-.fi
-.PP
-Furthermore, if \fBBEGLINE\fR equals \fBENDLINE\fR, then the format
-is:
-.sp
-.nf
-.in +5
-\fBFILE\fR:\fBLINE\fR.\fBBEGCOL\fR\-\fBENDCOL\fR
-.in
-.fi
-.PP
-Finally, if \fBBEGCOL\fR\ equals \fBENDCOL\fR, the output is
-simplified to
-.sp
-.nf
-.in +5
-\fBFILE\fR:\fBLINE\fR.\fBCOL\fR
-.in
-.fi
-.PP
-If \fBbeg.col\fR is \fB0\fR, then only the \fBbeg\fR part is
-formatted:
-.sp
-.nf
-.in +5
-\fBFILE\fR:\fBLINE\fR
-.in
-.fi
-.SH RETURN VALUE
-None.
-.SH "SEE ALSO"
-.BR errno (3)
-.SH AUTHORS
-Sergey Poznyakoff
-.SH "BUG REPORTS"
-Report bugs to <gray+grecs@gnu.org.ua>.
-.SH COLOPHON
-The \fBGrecs\fR library is constantly changing, so this manual page
-may be incorrect or out-of-date.  For the latest copy of \fBGrecs\fR
-documentation, visit <http://www.gnu.org.ua/software/grecs>.
-.SH COPYRIGHT
-Copyright \(co 2011 Sergey Poznyakoff
-.br
-.na
-License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
-.br
-.ad
-This is free software: you are free to change and redistribute it.
-There is NO WARRANTY, to the extent permitted by law.
-.\" Local variables:
-.\" eval: (add-hook 'write-file-hooks 'time-stamp)
-.\" time-stamp-start: ".TH [A-Z_][A-Z0-9_]* [0-9] \""
-.\" time-stamp-format: "%:B %:d, %:y"
-.\" time-stamp-end: "\""
-.\" time-stamp-line-limit: 20
-.\" end:
-