Stop irb:rdbg from saving duplicated history when there's no prior history file
#853
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st0012
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irb:rdbg from saving duplicated history when there's no prior history file
st0012
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Jan 31, 2024
| step | ||
| irb_info | ||
| puts Reline::HISTORY.to_a.to_s | ||
| q! |
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Without the fix, the history would be:
+ 'irb session'
+ next
+ 'irb session'
+ next
+ 'irb:debug session'
+ 'irb session'
+ next
+ 'irb:debug session'
+ step
+ 'irb session'
+ next
+ 'irb:debug session'
+ step
+ irb_info
+ puts Reline::HISTORY.to_a.to_s
'irb session'
next
'irb:debug session'
step
irb_info
puts Reline::HISTORY.to_a.to_s
q!
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The issue (https://github.com/ruby/debug/issues/1064) is caused by a combination of factors: 1. When user starts an IRB session without a history file, the `@loaded_history_lines` ivar is not defined. 2. If the user then starts the `irb:rdbg` session, the history counter is not set, because the `@loaded_history_lines` is not defined. 3. Because `irb:rdbg` saves the history before passing Ruby expression to the debugger, it saves the history with duplicated lines. The number grows in exponential order. 4. When the user exits the `irb:rdbg` session, the history file could be bloated with duplicated lines. This commit fixes the issue by resetting the history counter even when `@loaded_history_lines` is not defined.
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tompng
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Feb 1, 2024
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Feb 1, 2024
not defined (ruby/irb#853) The issue (https://github.com/ruby/debug/issues/1064) is caused by a combination of factors: 1. When user starts an IRB session without a history file, the `@loaded_history_lines` ivar is not defined. 2. If the user then starts the `irb:rdbg` session, the history counter is not set, because the `@loaded_history_lines` is not defined. 3. Because `irb:rdbg` saves the history before passing Ruby expression to the debugger, it saves the history with duplicated lines. The number grows in exponential order. 4. When the user exits the `irb:rdbg` session, the history file could be bloated with duplicated lines. This commit fixes the issue by resetting the history counter even when `@loaded_history_lines` is not defined. ruby/irb@4afc98c258
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The issue (#855) is caused by a combination of factors:
@loaded_history_linesivar is not defined.irb:rdbgsession, the history counter is not set, because the@loaded_history_linesis not defined.irb:rdbgsaves the history before passing Ruby expression to the debugger, it saves the history with duplicated lines. The number grows in exponential order.irb:rdbgsession, the history file could be bloated with duplicated lines.This commit fixes the issue by resetting the history counter even when
@loaded_history_linesis not defined.Closes #855