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24957: better sanity checking of colour ranges

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always use termcap for numeric ranges where available
This commit is contained in:
Peter Stephenson 2008-05-06 21:33:10 +00:00
parent 85810b7b8e
commit 0ef4ecefc7
3 changed files with 41 additions and 12 deletions
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14
Doc/Zsh/zle.yo
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@ -2180,18 +2180,16 @@ or the name of one of the eight most widely-supported colours.
Not all terminals support this and, of those that do, not all provide
facilities to test the support, hence the user should decide based on the
terminal type. Most terminals with colour support accept the numbers 0 to
7, and may generate additional colours if the tt(bold) attributes is also
present. Most terminals also have a standard range of colours for those
numbers (though the interpretation of the colour can vary); these colours
can be set by one of the names tt(black), tt(red), tt(green), tt(yellow),
tt(blue), tt(magenta), tt(cyan) and tt(white). Abbreviations are
allowed; tt(b) or tt(bl) selects black.
terminal type. Most terminals support the colours tt(black), tt(red),
tt(green), tt(yellow), tt(blue), tt(magenta), tt(cyan) and tt(white),
which can be set by name. Abbreviations are allowed; tt(b) or tt(bl)
selects black. Some terminals may generate additional colours if the
tt(bold) attribute is also present.
On recent terminals and on systems with an up-to-date terminal database the
number of colours supported may be tested by with the command `tt(echotc
Co)'; if this succeeds, it indicates a limit on the number of colours which
will be enforced by the line editor. The number of colours is in case
will be enforced by the line editor. The number of colours is in any case
limited to 256 (i.e. the range 0 to 255).
Colour is also known as color.