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-rw-r--r--Doc/Zsh/contrib.yo37
1 files changed, 34 insertions, 3 deletions
diff --git a/Doc/Zsh/contrib.yo b/Doc/Zsh/contrib.yo
index ca71bbd61..d6b4a9ef6 100644
--- a/Doc/Zsh/contrib.yo
+++ b/Doc/Zsh/contrib.yo
@@ -384,12 +384,13 @@ tindex(capitalize-word-match)
tindex(up-case-word-match)
tindex(down-case-word-match)
tindex(select-word-style)
+tindex(match-word-context)
tindex(match-words-by-style)
xitem(tt(forward-word-match), tt(backward-word-match))
xitem(tt(kill-word-match), tt(backward-kill-word-match))
xitem(tt(transpose-words-match), tt(capitalize-word-match))
xitem(tt(up-case-word-match), tt(down-case-word-match))
-item(tt(select-word-style), tt(match-words-by-style))(
+item(tt(select-word-style), tt(match-word-context), tt(match-words-by-style))(
The eight `tt(-match)' functions are drop-in replacements for the
builtin widgets without the suffix. By default they behave in a similar
way. However, by the use of styles and the function tt(select-word-style),
@@ -463,7 +464,7 @@ Words are whitespace-delimited strings of characters.
)
enditem()
-The first three of those styles usually use tt($WORDCHARS), but the value
+The first three of those rules usually use tt($WORDCHARS), but the value
in the parameter can be overridden by the style tt(word-chars), which works
in exactly the same way as tt($WORDCHARS). In addition, the style
tt(word-class) uses character class syntax to group characters and takes
@@ -474,7 +475,7 @@ alphanumerics plus the characters `tt(-)' and `tt(:)'. Be careful
including `tt(])', `tt(^)' and `tt(-)' as these are special inside
character classes.
-The final style is tt(skip-chars). This is mostly useful for
+The style tt(skip-chars) is mostly useful for
tt(transpose-words) and similar functions. If set, it gives a count of
characters starting at the cursor position which will not be considered
part of the word and are treated as space, regardless of what they actually
@@ -486,6 +487,17 @@ has been set, and tt(transpose-words-match) is called with the cursor on
the var(X) of tt(foo)var(X)tt(bar), where var(X) can be any character, then
the resulting expression is tt(bar)var(X)tt(foo).
+Finer grained control can be obtained by setting the style
+tt(word-context) to an array of pairs of entries. Each pair of entries
+consists of a var(pattern) and a var(subcontext). The word the cursor is on is
+matched against each var(pattern) in turn until one matches; if it does,
+the context is extended by a colon and the corresponding var(subcontext).
+Note that the test is made against the original word on the line, with
+no stripping of quotes. If the cursor is at the end of the line
+the test is maded against an empty string; if it is on whitespace
+between words the test is made against a single space. Some examples
+are given below.
+
Here are some examples of use of the styles, actually taken from the
simplified interface in tt(select-word-style):
@@ -501,6 +513,21 @@ example(style ':zle:*kill*' word-style space)
Uses space-delimited words for widgets with the word `kill' in the name.
Neither of the styles tt(word-chars) nor tt(word-class) is used in this case.
+Here are some examples of use of the tt(word-context) style to extend
+the context.
+
+example(zstyle ':zle:*' word-context "[[:space:]]" whitespace "*/*" file
+zstyle ':zle:transpose-words:whitespace' word-style shell
+zstyle ':zle:transpose-words:filename' word-style normal
+zstyle ':zle:transpose-words:filename' word-chars '')
+
+This provides two different ways of using tt(transpose-words) depending on
+whether the cursor is on whitespace between words or on a filename, here
+any word containing a tt(/). On whitespace, complete arguments as defined
+by standard shell rules will be transposed. In a filename, only
+alphanumerics will be transposed. Elsewhere, words will be transposed
+using the default style for tt(:zle:transpose-words).
+
The word matching and all the handling of tt(zstyle) settings is actually
implemented by the function tt(match-words-by-style). This can be used to
create new user-defined widgets. The calling function should set the local
@@ -527,6 +554,10 @@ endsitem()
For example, tt(match-words-by-style -w shell -c 0) may be used to
extract the command argument around the cursor.
+
+The tt(word-context) style is implemented by the function
+tt(match-word-context). This should not usually need to be called
+directly.
)
tindex(delete-whole-word-match)
item(tt(delete-whole-word-match))(