patch 8.1.1924: using empty string for current buffer is unexpected
Problem: Using empty string for current buffer is unexpected.
Solution: Make the argument optional for bufname() and bufnr().
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 12e4d09..9a00dd3 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -2335,8 +2335,8 @@
buflisted({expr}) Number |TRUE| if buffer {expr} is listed
bufload({expr}) Number load buffer {expr} if not loaded yet
bufloaded({expr}) Number |TRUE| if buffer {expr} is loaded
-bufname({expr}) String Name of the buffer {expr}
-bufnr({expr} [, {create}]) Number Number of the buffer {expr}
+bufname([{expr}]) String Name of the buffer {expr}
+bufnr([{expr} [, {create}]]) Number Number of the buffer {expr}
bufwinid({expr}) Number window ID of buffer {expr}
bufwinnr({expr}) Number window number of buffer {expr}
byte2line({byte}) Number line number at byte count {byte}
@@ -3217,9 +3217,10 @@
Can also be used as a |method|: >
let loaded = 'somename'->bufloaded()
-bufname({expr}) *bufname()*
+bufname([{expr}]) *bufname()*
The result is the name of a buffer, as it is displayed by the
":ls" command.
+ If {expr} is omitted the current buffer is used.
If {expr} is a Number, that buffer number's name is given.
Number zero is the alternate buffer for the current window.
If {expr} is a String, it is used as a |file-pattern| to match
@@ -3251,7 +3252,7 @@
Obsolete name: buffer_name().
*bufnr()*
-bufnr({expr} [, {create}])
+bufnr([{expr} [, {create}]])
The result is the number of a buffer, as it is displayed by
the ":ls" command. For the use of {expr}, see |bufname()|
above.
@@ -3259,7 +3260,7 @@
{create} argument is present and not zero, a new, unlisted,
buffer is created and its number is returned.
bufnr("$") is the last buffer: >
- :let last_buffer = bufnr("$")
+ :let last_buffer = bufnr("$")
< The result is a Number, which is the highest buffer number
of existing buffers. Note that not all buffers with a smaller
number necessarily exist, because ":bwipeout" may have removed
@@ -7201,7 +7202,7 @@
that was entered at the prompt. This can be an empty string
if the user only typed Enter.
Example: >
- call prompt_setcallback(bufnr(''), function('s:TextEntered'))
+ call prompt_setcallback(bufnr(), function('s:TextEntered'))
func s:TextEntered(text)
if a:text == 'exit' || a:text == 'quit'
stopinsert
@@ -7227,7 +7228,7 @@
{text} to end in a space.
The result is only visible if {buf} has 'buftype' set to
"prompt". Example: >
- call prompt_setprompt(bufnr(''), 'command: ')
+ call prompt_setprompt(bufnr(), 'command: ')
<
prop_ functions are documented here: |text-prop-functions|.