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patch 8.2.0077: settagstack() cannot truncate at current index

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Problem:    settagstack() cannot truncate at current index.
Solution:   Add the "t" action. (Yegappan Lakshmanan, closes #5417)
This commit is contained in:
Bram Moolenaar
2020-01-02 14:02:16 +01:00
parent 955f4e6f36
commit 271fa08a35
5 changed files with 66 additions and 12 deletions
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18
runtime/doc/eval.txt
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@@ -8774,11 +8774,21 @@ settagstack({nr}, {dict} [, {action}]) *settagstack()*
{nr} can be the window number or the |window-ID|.
For a list of supported items in {dict}, refer to
|gettagstack()|
|gettagstack()|. "curidx" takes effect before changing the tag
stack.
*E962*
If {action} is not present or is set to 'r', then the tag
stack is replaced. If {action} is set to 'a', then new entries
from {dict} are pushed onto the tag stack.
How the tag stack is modified depends on the {action}
argument:
- If {action} is not present or is set to 'r', then the tag
stack is replaced.
- If {action} is set to 'a', then new entries from {dict} are
pushed (added) onto the tag stack.
- If {action} is set to 't', then all the entries from the
current entry in the tag stack or "curidx" in {dict} are
removed and then new entries are pushed to the stack.
The current index is set to one after the length of the tag
stack after the modification.
Returns zero for success, -1 for failure.