Ticket UUID: | 219358 | |||
Title: | More info on the greedy/non-greedy problem (ticket 2866) | |||
Type: | Bug | Version: | obsolete: 8.3.2 | |
Submitter: | nobody | Created on: | 2000-10-26 05:11:24 | |
Subsystem: | 43. Regexp | Assigned To: | aku | |
Priority: | 5 Medium | Severity: | Minor | |
Status: | Open | Last Modified: | 2017-10-26 01:42:08 | |
Resolution: | None | Closed By: | nobody | |
Closed on: | ||||
Description: |
OriginalBugID: 5865 Bug Version: 8.2 SubmitDate: '2000-06-08' LastModified: '2000-06-21' Severity: MED Status: UnAssn Submitter: techsupp ChangedBy: ericm OS: SunOS OSVersion: SunOS beast 5.7 Generic_106541-09 sun4u sparc SUNW,Ultra-4 Machine: It's not mine, it's ArsDigita's, and I know nothing about it. FixedDate: '2000-10-25' ClosedDate: '2000-10-25' Name: Ian Baker Extensions: I have no clue. It's running inside AOLserver, if that helps at all. ReproducibleScript: % regexp "(.+?)(.+?)(.{2,4})(.+?)(.+)" "abcdefghijklm" match a b c d e 1 % puts "$a:$b:$c:$d:$e" a:b:cd:e:f ObservedBehavior: If the first quantifier is non-greedy, the RE matches "non-greedy only", as is described in ticket #2866. If the first quantifier is greedy, however, the RE no longer matches either "greedy or non-greedy, but not some mixture of the two": it begins to work as expected. DesiredBehavior: Here's an RE that mixes greedy and non-greedy quantifiers, yet works as expected, mixing the two. (note that the 1st, 3rd and 5th subexpressions match greedy, while the 2nd and 4th do not) % regexp "(.?)(.+?)(.{2,4})(.+?)(.+)" "abcdefghijklm" match a b c d e 1 % puts "$a:$b:$c:$d:$e" a:b:cdef:g:hijklm | |||
User Comments: |
dram added on 2017-10-26 01:42:08:
Related to 1. https://core.tcl.tk/tcl/tktview?name=219219ffff 2. https://core.tcl.tk/tcl/tktview?name=2798939fff dkf added on 2000-11-10 17:43:41: Behaviour is confirmed in 8.3.2 |