SyntaxVariable

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Syntax: Variables

Integers

set ival 555;

Single Quoted

No escapes are implemented.

set junk 'string value';

Unless you are embedding a variable, it is recommended that single quoted string be used as they are more efficient.

Double Quoted

Single-character escapes are recognized (bfnrtv"). A backslash before any other character will return that character. Octal, hex and unicode escapes are not recognized.

set junk "my stuff";

Double quoted strings may contain embedded variables.

set j "string value";
set k "c-compiler: ${CC}";
set l "home: $ENV{HOME}";
set a 1;
set b1 c;
set m "b${a}: ${b${a}}";

Path Names

Path names may be left unquoted in many (but not all) cases. Path names with embedded spaces must be quoted.

check_size int64_t {
  header stdint.h;
  header /opt/local/include/stuff.h;
}

Values

Variable values are enclosed with braces ${...}. Variables names may contain other variables.

set aaa 123;
set bbb ${aaa};
set a 1;
set b 2;
set c 3;
set d1 4;
set d2 5;
set d3 6;
set stuff ${d${b}};

Environment variables

set home $ENV{HOME};

Lists

set n [1 2 3 5];
set o ['a' 'b' 'c'];

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