GNU bug report logs - #14674
24.3; concat is missing from loop help

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: JuanLeon Lahoz <juanleon.lahoz <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3; concat is missing from loop help
Date: Thu, 20 Jun 2013 17:23:56 +0200

[Message part 1 (text/plain, inline)]

(loop repeat 3 concat "foo") works as expected.

However, help for loop does not mention it:

loop is an alias for `cl-loop' in `cl.el'.

(loop CLAUSE...)

The Common Lisp `loop' macro.
Valid clauses are:
  for VAR from/upfrom/downfrom NUM to/upto/downto/above/below NUM by NUM,
  for VAR in LIST by FUNC, for VAR on LIST by FUNC, for VAR = INIT then
EXPR,
  for VAR across ARRAY, repeat NUM, with VAR = INIT, while COND, until COND,
  always COND, never COND, thereis COND, collect EXPR into VAR,
  append EXPR into VAR, nconc EXPR into VAR, sum EXPR into VAR,
  count EXPR into VAR, maximize EXPR into VAR, minimize EXPR into VAR,
  if COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...],
  unless COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...],
  do EXPRS..., initially EXPRS..., finally EXPRS..., return EXPR,
  finally return EXPR, named NAME.

[Message part 2 (text/html, inline)]

Message #8 received at 14674 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: JuanLeon Lahoz <juanleon.lahoz <at> gmail.com>
Cc: 14674 <at> debbugs.gnu.org
Subject: Re: bug#14674: 24.3; concat is missing from loop help
Date: Thu, 20 Jun 2013 11:28:51 -0400

JuanLeon Lahoz wrote:

> (loop repeat 3 concat "foo") works as expected.
>
> However, help for loop does not mention it:
>
> loop is an alias for `cl-loop' in `cl.el'.
>
> (loop CLAUSE...)
>
> The Common Lisp `loop' macro.
> Valid clauses are:

Thanks for the report. In the current trunk it says:

The Common Lisp `loop' macro.
Valid clauses include:
  For clauses:
    for VAR from/upfrom/downfrom EXPR1 to/upto/downto/above/below EXPR2
    by EXPR3
    for VAR = EXPR1 then EXPR2
    for VAR in/on/in-ref LIST by FUNC
    for VAR across/across-ref ARRAY
    for VAR being:
      the elements of/of-ref SEQUENCE [using (index VAR2)]
      the symbols [of OBARRAY]
      the hash-keys/hash-values of HASH-TABLE [using
      (hash-values/hash-keys V2)]
      the key-codes/key-bindings/key-seqs of KEYMAP [using (key-bindings VAR2)]
      the overlays/intervals [of BUFFER] [from POS1] [to POS2]
      the frames/buffers
      the windows [of FRAME]
  Iteration clauses:
    repeat INTEGER
    while/until/always/never/thereis CONDITION
  Accumulation clauses:
    collect/append/nconc/concat/vconcat/count/sum/maximize/minimize FORM
      [into VAR]
  Miscellaneous clauses:
    with VAR = INIT
    if/when/unless COND CLAUSE [and CLAUSE]... else CLAUSE [and CLAUSE...]
    named NAME
    initially/finally [do] EXPRS...
    do EXPRS...
    [finally] return EXPR

For more details, see Info node `(cl)Loop Facility'.

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