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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: questions on input/output
Date: Sat, 6 Feb 2021 10:36:04 +0100
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On 2021-02-05 23:50, Mehdi Saada wrote:

> I need: to read a character, until some marker, then go back (set_col(stored_position)) and read again but store it like Get(variable, FILE); then go past the marker (set_col(FILE,col(file)+1)).

Do not do it, bad idea anyway. The esoteric features of Text_IO like 
columns etc are not portable. Use Stream_IO instead.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de