diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -920,7 +920,7 @@ directives are: @( a (b (c d) (e ) )) - @("apple" 'b' 3) + @("apple" #\eb #\espace 3) @(a /[a-z]*/ b) @@ -929,10 +929,17 @@ directives are: A symbol is lexically the same thing as a variable and the same rules apply. Tokens that look like numbers are treated as numbers. -String and character literals are delimited by double and single quotes, -respectively, and may not span multiple lines. Character literals must contain -exactly one character. Character and numeric escapes may be used within -literals to escape the quotes, and to denote control characters. +Character literals are introduced by the #\ syntax, which is either +followed by a character name, the letter x followed by hex digits, +or a single character. Valid character names are: nul, alarm, backspace, tab, +linefeed, newline, vtab, page, return, esc, space. This convention +for character literals is similar to that of the Scheme language. + +String literals are delimited by double respectively, and may not span multiple +lines. A double quote within a string literal is encoded using \e" +and a backslash is encoded as \e\e. Backslash escapes like \en and \et +are recognized, as are hexadecimal escapes like \exFF and octal +escapes like \e123. Quasiliterals are similar to string literals, except that they may contain variable references denoted by the usual @ syntax. The quasiliteral |