diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -2495,9 +2495,8 @@ extends over all characters from the current position which match the regular expression .metn regex . (See the Regular Expressions section below.) -If the variable already has a value, then the regular expression is -ignored; the variable's value is used to match and extract text, which -may be different from what the regular expression would match. +If the variable already has a value, the text extracted by the regular +expression must exactly match the variable. In the .mono @@ -2547,7 +2546,7 @@ is all text within the specified field, but excluding leading and trailing whitespace. If the field contains only spaces, then an empty string is extracted. This fixed-field extraction takes place whether or not the variable already has a binding. If it already has a binding, then it must match -the extracted text. +the extracted, trimmed text. The .mono @@ -86697,7 +86696,15 @@ has a binding. The variable is then matched against the text spanned by the function to either give it a new binding or match the existing binding. The old behavior, restored by 272 or lower compatibility, is that the function is not invoked when the variable has a binding; the -variable's value is instead used to match text. +variable's value is instead used to match text. Lastly, a similar change +took place in positive match regular expression variables of the +.mono +.meti >> @{ bident <> / regex /} +.onom +form. +Prior to 273, when a variable of this form has an existing binding, the regex +is ignored, and the situation is treated as a match for the variable content. +This old behavior is also restored. .IP 265 Until \*(TX 265, the .code with-resources |