Hi, Le jeu. 28 janv. 2021 à 08:53, Michael Kerrisk (man-pages) <mtk.manpa...@gmail.com> a écrit : > > Hello Bastiern, > > On 1/27/21 4:48 PM, roucaries.bast...@gmail.com wrote: > > From: Bastien Roucariès <ro...@debian.org> > > > > Document the variable LINES and COLUMN > > > > Signed-off-by: Bastien Roucariès <ro...@debian.org> > > --- > > man7/environ.7 | 45 ++++++++++++++++++++++++++++++++++++++++++--- > > 1 file changed, 42 insertions(+), 3 deletions(-) > > > > diff --git a/man7/environ.7 b/man7/environ.7 > > index b461e93df..5665ac4d2 100644 > > --- a/man7/environ.7 > > +++ b/man7/environ.7 > > @@ -241,6 +241,48 @@ environment variables. > > The following variables are commonly used for personalizing > > applications used by the user. > > .TP > > +.B COLUMNS > > The following text is copied almost word for word from the standard. > For copyright reasons, we can't do that. > > > +This variable is a non-negative decimal integer used to indicate the > > user's preferred width > > +in column positions for the terminal screen or window. > > +If this variable is unset, set to zero, or empty, applications will > > How did you determine the bit about 'set to zero'? That's > not mentioned in the standard?
Ok that was a research on sources.debian.org. I will mention on notes Bastien > > Similar comments to the above, for LINES, below. > > Thanks, > > Michael > > > > +determine the appropriate value themselves. > > +When the > > +.B COLUMNS > > +environment variable > > +is set, any terminal-width information implied by the > > +.B TERM > > +environment variable is overridden. > > +.IP > > +Users and applications should not set > > +.B COLUMNS > > +unless they wish to override the system selection. > > +In this case, applications may produce output unrelated to the terminal > > characteristics. > > +Users should not need to set this variable in the environment unless > > +there is a specific reason to override the implementation's default > > behavior, > > +such as to display data in an area arbitrarily smaller than the terminal > > or window. > > +.TP > > +.B LINES > > +This variable is a non-negative decimal integer used to indicate the > > user's preferred > > +number of lines for the terminal screen or window. > > +If this variable is unset, set to zero, or empty, applications will > > +determine the appropriate value themselves. > > +When the > > +.B LINES > > +environment variable > > +is set, any terminal-width information implied by the > > +.B TERM > > +environment variable is overridden. > > +.IP > > +As for the related variable > > +.B COLUMNS, > > +users and applications should not set > > +.B LINES > > +unless they wish to override the system selection. > > +In this case, applications may produce output unrelated to the terminal > > characteristics. > > +Users should not need to set this variable in the environment unless > > +there is a specific reason to override the implementation's default > > behavior, > > +such as to display data in an area arbitrarily smaller than the terminal > > or window. > > +.TP > > .B PAGER > > The user's preferred utility to display text files. > > Any string acceptable as a command_string operand to the > > @@ -307,9 +349,6 @@ See also > > gives information on how to address a given terminal > > (or gives the name of a file containing such information). > > .IP * > > -.BR COLUMNS " and " LINES > > -tell applications about the window size, possibly overriding the actual > > size. > > -.IP * > > .BR PRINTER " or " LPDEST > > may specify the desired printer to use. > > See > > > > > -- > Michael Kerrisk > Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ > Linux/UNIX System Programming Training: http://man7.org/training/
