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vim-patch:8.1.1114: confusing overloaded operator "." for string concatenation

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Problem:    Confusing overloaded operator "." for string concatenation.
Solution:   Add ".." for string concatenation.  Also "let a ..= b".
0f248b006c
This commit is contained in:
erw7
2019-05-29 12:06:39 +09:00
parent d46aaa0746
commit bfc44a91ac
3 changed files with 50 additions and 8 deletions
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17
runtime/doc/eval.txt
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@@ -610,10 +610,10 @@ Expression syntax summary, from least to most significant:
expr2 ? expr1 : expr1 if-then-else
|expr2| expr3
expr3 || expr3 .. logical OR
expr3 || expr3 ... logical OR
|expr3| expr4
expr4 && expr4 .. logical AND
expr4 && expr4 ... logical AND
|expr4| expr5
expr5 == expr5 equal
@@ -634,9 +634,10 @@ Expression syntax summary, from least to most significant:
expr5 isnot expr5 different |List| instance
|expr5| expr6
expr6 + expr6 .. number addition or list concatenation
expr6 - expr6 .. number subtraction
expr6 . expr6 .. string concatenation
expr6 + expr6 .. number addition or list concatenation
expr6 - expr6 .. number subtraction
expr6 . expr6 .. string concatenation
expr6 .. expr6 .. string concatenation
|expr6| expr7
expr7 * expr7 .. number multiplication
@@ -670,7 +671,7 @@ Expression syntax summary, from least to most significant:
{args -> expr1} lambda expression
".." indicates that the operations in this level can be concatenated.
"..." indicates that the operations in this level can be concatenated.
Example: >
&nu || &list && &shell == "csh"
@@ -850,10 +851,14 @@ expr5 and expr6 *expr5* *expr6*
expr6 + expr6 .. Number addition or |List| concatenation *expr-+*
expr6 - expr6 .. Number subtraction *expr--*
expr6 . expr6 .. String concatenation *expr-.*
expr6 .. expr6 .. String concatenation *expr-..*
For |Lists| only "+" is possible and then both expr6 must be a list. The
result is a new list with the two lists Concatenated.
For String concatenation ".." is preferred, since "." is ambiguous, it is also
used for |Dict| member access and floating point numbers.
expr7 * expr7 .. Number multiplication *expr-star*
expr7 / expr7 .. Number division *expr-/*
expr7 % expr7 .. Number modulo *expr-%*