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| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | Doc/Zsh/expn.yo | 10 |
2 files changed, 13 insertions, 0 deletions
@@ -1,5 +1,8 @@ 2015-10-27 Peter Stephenson <p.stephenson@samsung.com> + * 36977: Doc/Zsh/expn.yo: note about complications of pattern + repetitions (#cN). + * 36974: Src/Modules/zftp.c, Src/Zle/complist.c, Src/Zle/computil.c, Src/Zle/zle_thingy.c, Src/parse.c: fix empty argument lists. diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index 5ea8610f2..49a0f0d53 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -2192,6 +2192,16 @@ inclusive. The form tt(LPAR()#c)var(N)tt(RPAR()) requires exactly tt(N) matches; tt(LPAR()#c,)var(M)tt(RPAR()) is equivalent to specifying var(N) as 0; tt(LPAR()#c)var(N)tt(,RPAR()) specifies that there is no maximum limit on the number of matches. + +Note that if the previous group of characters contains wildcards, +results can be unpredictable to the point of being logically incorrect. +It is recommended that the pattern be trimmed to match the minimum +possible. For example, to match a string of the form `tt(1_2_3_)', use +a pattern of the form `tt(LPAR()[[:digit:]]##_+RPAR()LPAR()#c3+RPAR())', not +`tt(LPAR()*_+RPAR()LPAR()#c3+RPAR())'. This arises from the +complicated interaction between attempts to match a number of +repetitions of the whole pattern and attempts to match the wildcard +`tt(*)'. ) vindex(MATCH) vindex(MBEGIN) |