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| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | txr.1 | 15 |
2 files changed, 13 insertions, 5 deletions
@@ -6,6 +6,9 @@ (grammar): Add a rule for a \@ escape in quasiliterals, and quasi word list literals. + * txr.1: Document \@, and remove the lie that @@ + encodes for a single @ in quasiliterals. + 2015-06-26 Kaz Kylheku <kaz@kylheku.com> Second round of quasiliteral-related fixes. @@ -2481,13 +2481,18 @@ the quasiliteral represents the string .strn "one apple and two bananas" . A backquote escaped by a backslash represents -itself, and two consecutive +itself. Unlike in directive syntax, two consecutive .code @ -characters code for a literal -.codn @ . -There is no +characters do not code for a literal +.codn @ , +but cause a syntax error. The reason for this is that compounding of the +.code @ +syntax is meaningful. +Instead, there is a .code \e@ -escape. Quasiliterals support the full output variable +escape for encoding a literal +.code @ +character. Quasiliterals support the full output variable syntax. Expressions within variables substitutions follow the evaluation rules of \*(TL when the quasiliteral occurs in \*(TL, and the rules of the \*(TX pattern language when the quasiliteral occurs in the pattern language. |