[Help-glpk] Documentation: printf

[glpk xypron]

Hello Andrew,

in doc/gmpl.pdf, chapter "4.9 Printf" please add a description of
the supported escape sequences, e.g.

The following escape sequences are supported in the format contol string:
\n is output as line feed (0x0a) or as carriage return, line feed (0x0d, 0x0a) 
depending on the host system.
\t is output as horizontal tab (0x09).
\\ is output as backslash (0x5c).

In doc/gmpl.pdf, chapter 2.3 "String literals", please, add a remark
like

Escape sequences are not supported in string literals.
See chapter "4.9 Printf" for escape sequences usable in the printf
command.

---

I was supprised that the support of escape sequences is coded in
printf() and not in get_token(), which is easily shown by the
output of the following model:

printf "%s\n", "line1\nline2";
printf "line3\nline4\n";
end;

which outputs

Memory used: 0.0 Mb (37989 bytes)
line1\nline2
line3
line4
Model has been successfully processed

This matches the behaviour of AMPL.

ampl: printf "%s\n", "line1\nline2";
line1\nline2
ampl: printf "line3\nline4\n";
line3
line4
ampl:

Best regards

Xypron

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